Basel 1 Star 12(G=11.80, G-R=0.69, U-G=1.00), Basel 1 star 23(G=12.10, G-R=0.68, U-G=0.92) (108). Basel 4 Identification chart and tables of magnitudes were not available. Basel 5 Identification chart and tables of magnitudes were not available. Basel 7 Star 80(G=10.79, G-R=0.99, U-G=1.31). Adopted cluster centre: Basel 7 star 134 (199). Basel 11.2 Reference (137) gives the cluster E(G-R)=1.01 and (G-R)o=0.18 Basel 11.2 (turnoff). Star 38(G=13.05, G-R=1.03, U-G=1.16), Basel 11.2 star 62(G=12.25, G-R=1.02, U-G=1.39) (137). Apparent cluster Basel 11.2 diameter was taken from (137). Adopted cluster centre: star 10 Basel 11.2 (same reference). Berkeley 11 Reddening from (175). Star 24(B6III, member?) (175). Berkeley 19 The `cleaned' colour-magnitude diagram was examined (50). Berkeley 32 All cluster parameters are from (189), where stars 30, 31 and 40 Berkeley 32 are cited as blue stragglers. Adopted cluster centre: star 16 Berkeley 32 (189). Berkeley 39 Reddening and age are from (192). Adopted cluster centre: Berkeley 39 star 293 (192). Berkeley 42 All cluster parameters are from (12). Adopted cluster centre: Berkeley 42 star 329 (12). Berkeley 62 Reddening from (124). Berkeley 65 Star 11=LS+60 247 (OB) is a cluster member (251). Berkeley 82 Reddening and age are from (125). Star 1 has a spectrum B6III Berkeley 82 (125). Berkeley 86 Reddening from (124). Berkeley 87 All cluster parameters are from (338). Berkeley 96 Reddening from (78). The earliest spectral type given in (78) is Berkeley 96 B0V. Blanco 1 Zeta Scl=HD 224990. Identification chart is in the ubvy Blanco 1 photometry (372), where the star zeta Scl is cited as a blue Blanco 1 straggler and is given the magnitudes: b-y=-0.064, u-b=0.518, Blanco 1 m1=0.101, c1=0.441 and a spectrum B6III-B5V. Bochum 1 Apparent cluster diameter from (253). Bochum 4 Star 1 has a luminosity class III (beta=2.676) (253). Bochum 14 Star 1=LSS 4565 has a spectrum O6Vk (255). Collinder 96 Star 1=NLS+2 03 (OB) has a luminosity class II-III: (253). Collinder 97 Reddening and age are from (18). Collinder 135 Reddening and age are from (64). Lynga's selected angular Collinder 135 diameter was taken. Collinder 173 Gamma1 Vel=HD 68243, gamma2 Vel=HD 68273. Reference (94) gives Collinder 173 the cluster E(b-y)=0.025 and (b-y)o=-0.1 (turnoff), cites both Collinder 173 stars as blue stragglers, says they form a physical pair and Collinder 173 gives the spectra: gamma1 Vel(O9I), gamma2 Vel(WC8+O9I). Collinder 173 Reference (3) gives gamma1 and gamma2 Vel the photoelectric Collinder 173 magnitudes V=4.22 and V=1.83 respectively. Collinder 223 Reddening and age are from (66). Both stars are cited as blue Collinder 223 stragglers in the same reference. Adopted cluster centre: Collinder 223 star 84 (66). Collinder 240 In (58) this group is considered to be an association rather Collinder 240 than a cluster. Collinder 285 = Ursa Major cluster. HR 8407=HD 209515 Collinder 285 (A0, visual binary: 5.6, 8.0), eta Cnc=HD 77350(A0, variable?) Collinder 285 (241). The colour-magnitude diagram of the most likely members Collinder 285 was examined (241). Both stars belong to the Ursa Major stream, Collinder 285 according to the same reference. Collinder 394 The de-reddened colour-magnitude diagram was examined (340). Collinder 469 The following RGU magnitudes are given in (135): Collinder 469 star 4(G=11.51, G-R=0.93, U-G=1.03), Collinder 469 star 10(G=11.81, G-R=0.75, U-G=0.76). Adopted cluster centre: Collinder 469 star 11 (135). CV Mon Reddening and apparent cluster diameter are from (329). Haffner 15 Star 2=CD-32 4372 has a luminosity class III (359). Haffner 18 Star 3081 has a spectrum O7:k and is a cluster member (121). Haffner 18 No identification chart was available. Haffner 19 Star 4051 has a spectrum B0Vk and is a cluster member (121). Haffner 19 No identification chart was available. Harvard 5 The apparent cluster diameter was taken from (302). Adopted Harvard 5 cluster centre: star b (302). Star 83 has a spectrum B5V Harvard 5 according to the same reference. Harvard 8 Star 2 is cited as a blue straggler in (255). Adopted cluster Harvard 8 centre star 12 (255). Hogg 10 The apparent cluster diameter was taken from (58). Hogg 15 Star 3=HDE 311884 (WN6). Hogg 17 Star 1 (B3) is a non-member according to (216). Hyades The blue straggler was selected taking into account the proper Hyades motion and radial velocity study (346). The identification chart Hyades is in the same reference. Adopted cluster centre: star 57. Hyades Lynga's selected angular diameter was taken. References (2) and Hyades (240) cite star 56 as a blue straggler. Star 56=68 Tau=HD 27962 Hyades has a spectrum A3V and an optical companion of magnitude 9 (45). Hyades The blue straggler does not show anomalous lithium abundances Hyades (39). In (2) this star is given a spectrum Am(K/H/M=A2/A3:/A5) Hyades and a projected velocity v.sin i=18km/s. IC 166 The colour-magnitude diagram shows an important dispersion in the IC 166 turnoff area. Star 459 could not be identified on the chart. IC 348 The cluster is given an age of 5-20 Myr in (316). IC 1311 The photometric study (6) surveys an area that seems to be IC 1311 displaced from the cluster centre. Stars 22, 281 and 361 are IC 1311 cited as blue stragglers in (6) and the presence of several IC 1311 `red stragglers' candidates is also pointed out. IC 1369 Adopted cluster centre: star 57 (140). All blue stragglers lie on IC 1369 the periphery of the cluster but they are members according to IC 1369 (140). In particular, notice the close group of IC 1369 stars 155-156-157. IC 1442 Star 49(G=11.56, G-R=0.65, U-G=1.06). Adopted cluster centre: IC 1442 star 82 (380). IC 1805 The de-reddened colour-magnitude diagram was examined (173). IC 1848 Colour-magnitude diagrams in (165) and (245) were examined. IC 2395 Star 1 has a spectrum B2/3 (225). IC 2488 Reddening and age are from (262). Adopted cluster centre: IC 2488 star 28 (262). Star 37(B8) is cited as a likely blue straggler IC 2488 in the same reference. IC 2581 The de-reddened colour-magnitude diagram was examined (328). IC 2581 Stars LSS 1529 and LSS 1563 have spectra O7V and B0.5II IC 2581 respectively (43). IC 2602 Theta Car=HD 93030 is a well-known blue straggler. In (163) this IC 2602 star is given the magnitudes v=2.78, b-y=-0.094, m1=0.063, IC 2602 c1=-0.078, beta=2.603, spectrum: B0Vp. Reference (240) gives it IC 2602 a projected velocity v.sin i=195km/s. Theta Car is a IC 2602 spectroscopic binary of period 1.77 days and eccentricity 0.446 IC 2602 (363), thought to be the result of a mass transfer event in a IC 2602 close binary an account of this interpretation may be found in IC 2602 (96). IC 2714 Star 157 is considered to be a cluster member in (67). IC 2714 Identification chart was not available. IC 2944 Star designations are HD 101... . Star 131(O7n) is a IC 2944 spectroscopic binary. Star 190 has a spectrum O6 (320). IC 4651 The colour-magnitude diagrams in (9) and (88) were examined. IC 4651 Identification chart is in (221). The CCD photometry (9) IC 4651 considers stars 9, 10, 18, 46 and 94 as probable binaries and IC 4651 also suggests the presence of many binaries in the turnoff area. IC 4651 Stars 9, 40, 46 and 75 are cited as blue stragglers in (88). IC 4651 Stars 9 and 75 are non-members and star 46 (A5IV) is a probable IC 4651 cluster member according to (221). The DDO photometry of cluster IC 4651 giants (306) has found CN overabundance on them. Attention is IC 4651 drawn to the possible relation between this fact and the blue IC 4651 straggler phenomenon (306). Other clusters with blue stragglers IC 4651 and CN-strong giants: Mel 66, NGC 2204, NGC 2420, NGC 2682, IC 4651 NGC 7789 (306). IC 4725 1034=CPD-19 6881(B6V), 2411=GC-19 5052, 2415=CPD-19 6917, IC 4725 4215=CPD-19 6892 (B6V). IC 4756 Photometry (159) includes a proper motion study. IC 4756 104=BD+5 3843(B9, p=67%). The ubvy-beta photometry (297) gives: IC 4756 104(v=9.24, b-y=0.170, m1=0.051, c1=0.839, beta=2.804). IC 4756 Star 104 is cited as a probable blue straggler in (297). Adopted IC 4756 cluster centre: star 236 (159). IC 4996 Proper motion study (350) was consulted. The ubvy-beta photometry IC 4996 (7) gives 5=HD 228706(v=8.75, b-y=0.108, m1=0.178, c1=1.195, IC 4996 beta=7.878). Adopted cluster centre: star 2 (165). IC 5146 The cluster is given an age of 3 Myr in (372). IC 5146 Star 42=BD+46 3474 has a heavily reddened B1V spectrum (367). King 2 Reddening and age are from (380). The colour-magnitude diagram is King 2 probably contaminated with field stars, so only candidates King 2 inside r/R=1 were considered. Adopted cluster centre: King 2 star 419 (374). King 8 Star 105(F3V) belongs to the field according to (52). King 11 Reddening and age are from (12). Adopted cluster centre: King 11 star 315 (12). King 12 In (256) the cluster is given an age that is intermediate between King 12 those of NGC 884 and NGC 2362 groups. Lynga 1 Reddening and age are from (271). Markarian 18 The de-reddened colour-magnitude diagram was examined (260). Markarian 50 11=BD+59 2682. Adopted cluster centre: star 33 (136). Melotte 20 = Alpha Persei cluster. Star 835(B3.5) is a cluster member Melotte 20 according to the proper motion study (157). Stars 835 and Melotte 20 HD 22928(B6n) are cluster members according to their radial Melotte 20 velocities (273). No identification chart was available. Melotte 66 In (207) it is suggested that a spread in the metal abundances Melotte 66 may account for the observed dispersion around the turnoff in Melotte 66 the cluster colour-magnitude diagram. In that case, several Melotte 66 stars that appear as blue stragglers would not be such. Melotte 71 Reference (276) gives the cluster E(B-V)=0.10 and age=0.93 Gyr. Melotte 105 The photometric study (200) gives the cluster E(B-V)=0.52 and Melotte 105 age=0.15 Gyr. Adopted cluster centre: star 57 (304). Melotte 111 = Coma cluster. Chart and star identifications in (326). Adopted Melotte 111 cluster centre: star 91 (326). Star 146=17 Com=HD 108662=AI Com Melotte 111 is a cluster member (326) and an alpha CVn variable (240). It is Melotte 111 cited as a blue straggler in (2), (170) and (240). Reference (2) Melotte 111 gives this star a projected velocity v.sin i=15km/s and a Melotte 111 spectrum A0Vp(Sr, Cr, Si, Eu). NGC 129 Magnitudes are from two photometric studies: (15) and (165). NGC 129 Proper motion study: (212). Adopted cluster centre: NGC 129 star 100 (15). NGC 188 Stars on areas I and II in the identification charts of (287), NGC 188 with a membership probability p>=80% (344) were taken. Reference NGC 188 (342) gives the cluster E(B-V)=0.12. The CCD photometry (187) NGC 188 discovered a probable FK Com variable (star V8) which can be NGC 188 considered as a `red straggler' candidate. An hypothetical NGC 188 relation between the blue stragglers and the apparent lack of NGC 188 bright giants in the cluster nucleus is discussed in (187). In NGC 188 the photometric study (98) the following stars are cited as blue NGC 188 stragglers 1003, 1005, 1032, 1033, 1043, 1093, 1102, 1103, 1112 NGC 188 and 2046. In (342) and (344) it is suggested that the cluster is NGC 188 somewhat younger than what is usually agreed, so several stars NGC 188 that appear as blue stragglers would not be such. NGC 381 Reddening and age are from (71). Adopted cluster centre: NGC 381 star 79 (71). NGC 433 Reddening and age are from (22). NGC 436 Reference (171) gives the cluster E(B-V)=0.48 and (B-V)o=0.17 NGC 436 (turnoff). NGC 457 Proper motion study and examined colour-magnitude diagram are in NGC 457 (17). Adopted cluster centre: star 14 (252). Star 23054=DM 57247 NGC 457 (O9.5IV) is cited as a blue straggler in (240). NGC 559 Star 85 is cited as a blue straggler in (170). Stars 32 and 85 NGC 559 are probable non-members according to their colours and spectra NGC 559 (141). NGC 581 Proper motion study: (260). NGC 637 Reference (171) gives this cluster E(B-V)=0.66, (B-V)o=-0.27 NGC 637 (turnoff) and age=15Myr. NGC 654 Colour-magnitude diagrams in (269) and (314) were examined. The NGC 654 proper motion study (314) gives to star 3: spectrum B3, p=90%. NGC 654 Adopted cluster centre: star 44 (269). NGC 659 Colour-magnitude diagram in (141) was examined. Adopted cluster NGC 659 centre star 119 (279). NGC 663 Adopted cluster centre: star 21 (347). NGC 752 Identification chart and proper motion study (82). Another NGC 752 membership study: (275) gives star 209=BD+36 367 a probability NGC 752 p=99%. The ubvy photometry (341) gives: 209 (v=9.74, b-y=0.028, NGC 752 m1=0.153, c1=1.002). Reference (96) cites star 209 as a blue NGC 752 straggler and star 110 as a `red straggler'. References (161) NGC 752 and (170) also cite star 209(B9.5p?) as a blue straggler. NGC 884 = Chi Persei cluster. Identification chart and some spectra may NGC 884 be found in (296). The colour-magnitude diagram in (141) was NGC 884 examined. In (96) star 2296=BD+56 574(B1III) is cited as a blue NGC 884 straggler. Star 2172=HD 14434 is cited as a blue straggler in NGC 884 (240) and is not included in the photometry (141). Reference NGC 884 (181) gives star 2172 the following data: V=8.50, B-V=0.16, NGC 884 U-B=-0.79, spectrum:O5.5Vnp, v.sin i=400km/s, variable? NGC 957 The cluster colour-magnitude diagram shows an important NGC 957 dispersion. NGC 1193 Reddening and age are from (186). Adopted cluster centre: NGC 1193 star 310 (186).In the same reference stars 190, 245, 295, 335 NGC 1193 and 424 are cited as blue stragglers. NGC 1245 Adopted cluster centre: star 41 (165). NGC 1252 All cluster parameters are from (31). Adopted cluster centre: NGC 1252 star 10 (31). Star 4=HD 20286(B9.5V) is a cluster member NGC 1252 according to the same reference. NGC 1342 References (2) and (240) cite star 2=HD 21728 as a blue NGC 1342 straggler. In (2) this star is given a spectrum NGC 1342 A0II-IIIp(Si(st), Mg(wk)) and a projected velocity NGC 1342 v.sin i<40km/s NGC 1444 The apparent cluster diameter was taken from (141). NGC 1496 Reddening and age are from (79). NGC 1502 The colour-magnitude diagram in (141) was examined. Adopted NGC 1502 cluster centre: star E (279). Star A=HD 25638 is a probable beta NGC 1502 Cep variable, star B=HD 25639=SZ Cam is an eclipsing binary. NGC 1502 Both stars are cluster members (76). NGC 1513 Reference (79) gives the cluster E(B-V)=0.70, (B-V)0, TO=-0.03 NGC 1513 and age=15 Gyr. NGC 1528 References (2) and (240) cite star 1=HD 26603 as a blue NGC 1528 straggler. In (2) this star is given a spectrum NGC 1528 B8III p(Hg,Mn,Si) and a projected velocity v.sin i=50km/s NGC 1528 (approx). NGC 1647 The de-reddened colour-magnitude diagram in (336) was examined. NGC 1664 1'=HD 30650, 10=BD+43 1094. The following membership NGC 1664 probabilities are from (193): 1'(91%), 8(90%), 10(75%), 27(91%). NGC 1664 The apparent cluster diameter was taken from (141). Adopted NGC 1664 cluster centre: star 7 (165). NGC 1817 Stars 2020, 2072, 2090 and 2110 are cited as blue stragglers NGC 1817 in (144). NGC 1893 Colour-magnitude diagrams in (165) and (245) were examined. NGC 1901 Star 4=HD 35094 has a spectrum A5V (169), appears to belong to a NGC 1901 subgroup of bright stars at about 18' from the cluster centre NGC 1901 and is a cluster member (258). NGC 1907 Proper motion study: (210). Adopted cluster centre: star 9 (165). NGC 1912 Proper motion study: (210). NGC 1931 Reddening and age are from (261). NGC 2099 Star 6 is cited as a blue straggler in (240). NGC 2112 Reddening and age are from (284). The colour-magnitude diagram is NGC 2112 probably contaminated with field stars. NGC 2158 The colour-magnitude diagram shows an ill-defined turnoff. The NGC 2158 photometric study (53) gives the cluster E(B-V)=0.55 and NGC 2158 age=3 Gyr. In Table 2, `d' stands for `double' according to NGC 2158 (14). The apparent cluster diameter was taken from (141), NGC 2158 although the distribution of the blue stragglers suggests a NGC 2158 larger size. Only stars inside r/R=1 were included taking into NGC 2158 consideration a probable contamination with field stars. NGC 2168 Chart and star designations may be found in the proper motion NGC 2168 study (73). Adopted cluster centre: star 402 (73). NGC 2168 Colour-magnitude diagram and star magnitudes are in another NGC 2168 proper motion study: (239), where objects with p>=70% were taken NGC 2168 from. Star 203 has also been included, because in (73) is given NGC 2168 a membership probability p=89%, in disagreement with (239). This NGC 2168 cluster shows mass segregation (238). Star 371=HD 41940(B2V) is NGC 2168 cited as a blue straggler in (239). NGC 2169 Star 1 is a binary (B0V, B2V) and a probable cluster member. It NGC 2169 has the magnitudes v=6.93, b-y=0.020, m1=0.030, c1=-0.011, NGC 2169 beta=2.606 (267). NGC 2175 The de-reddened colour-magnitude diagram was examined (132). NGC 2175 HD 42088=LSV+20 19 (O6.5V). Infrared photometry (132) gives NGC 2175 this star a visual magnitude V=7.55. NGC 2194 The RGU magnitudes of star 160 are: G=13.60, G-R=0.77, U-G=1.51 NGC 2194 and is considered a non-member (77). Adopted cluster centre: NGC 2194 star 8 (77). NGC 2204 Reference (155) draws attention to the strong central NGC 2204 concentration of the blue stragglers, a feature also observed in NGC 2204 clusters M67 and Mel 66. NGC 2236 Reddening and age are from (19). Adopted cluster centre: star 72 NGC 2236 (19). Both stars are considered as non-members in the same NGC 2236 reference. NGC 2243 The examined colour-magnitude diagram is Fig. 4 in (29). The NGC 2243 identification chart may be found in (153). NGC 2244 Star 2 has a spectrum O5V((f)) and a membership probability p=86% NGC 2244 (229). Adopted cluster centre: star 23 (179). NGC 2251 Stars 1=HD 259954, 4=HD 259989 and 7=HD 260022 are cited as blue NGC 2251 stragglers in (2) and (240). Reference (2) gives: NGC 2251 1(B2IV, v.sin i<40km/s), 4(B9.5V, v.sin i=200km/s (approx)), NGC 2251 7(A0p(Si)). NGC 2254 Star 25(G=13.45, G-R=0.77, U-G=1.21, member?), star 83(G=12.85, NGC 2254 G-R=0.78, U-G=1.32, non-member) (198). Adopted cluster centre: NGC 2254 star 101 (198). NGC 2264 Proper motion study: (353). Adopted cluster centre: star 110 NGC 2264 (366). Star 131=S Mon (O7V((f)), p=96%). Star 173 has a NGC 2264 spectrum B2. NGC 2266 Reddening and age are from (190). Adopted cluster centre: star 14 NGC 2266 (190). Star 10 is cited as a blue straggler in the same NGC 2266 reference. NGC 2281 This cluster shows mass segregation (381); in particular, the NGC 2281 binaries appear to be concentrated. The following spectra are NGC 2281 from (131) and the membership probabilities are from (351): NGC 2281 58(A2V, p=92%), 62(p=91%), 65(B9p, p=91%). Star 62=HD 49010= NGC 2281 ADS 5451 AB is cited as a blue straggler in (2) and (240). NGC 2281 Reference (2) gives this star a spectrum A2:Vp (Si(st), Ca(wk)) NGC 2281 and a projected velocity v.sin i=40, 100km/s. NGC 2286 Adopted cluster centre: star 15 (46). Stars 1 and 3 are probable NGC 2286 non-members (46). NGC 2287 Adopted cluster centre: star 102 (101). Reference (213) gives the NGC 2287 spectra 109=HD 49333(B9IV/B7IIIn(He(wk))), NGC 2287 116=HD 49024(B9IIIp(Hg-Mn)). The proper motion study (172) NGC 2287 gives 116(p=6%), 117=HD 49049(p=89%). Stars 109 and 116 are NGC 2287 cited as blue stragglers in (101) and (91) respectively. Star NGC 2287 109 is also cited as a blue straggler in (240), where is given a NGC 2287 spectrum B4p(He(wk)). NGC 2301 Star 5(B9III) is a cluster member (350). NGC 2323 Identification chart and tables of magnitudes were not available. NGC 2324 Adopted cluster centre: star 36 (165). NGC 2345 The de-reddened colour-magnitude diagram in (247) was examined. NGC 2345 Star 35 has a spectrum B4III/Vk (247). NGC 2353 Reference (115) gives this cluster an age=76 Myr. Star 71 has a NGC 2353 spectrum O9II (He(wk)) and may be a blue straggler if it is a NGC 2353 cluster member, but it is more likely that it belongs to the NGC 2353 CMa OB1 association (115). NGC 2354 Adopted cluster centre: star 157 (81). Star I could not be NGC 2354 identified on the chart. NGC 2355 Reddening and age are from (191). Adopted cluster centre: NGC 2355 star 100 (191). NGC 2360 Stars 51 and 100 are cited as blue stragglers in (85). Adopted NGC 2360 cluster centre: star 46. NGC 2362 Star 23=tau CMa=HD 57061 is given a spectrum O9V(spectroscopic NGC 2362 binary) in (177), but in (376) it is given O9Ib. In the NGC 2362 photometric system of (177) star 23 has the magnitudes: NGC 2362 Pgp=3.79, Cp=0.48. NGC 2367 Star 1=HD 57370(B3, luminosity class:V) (359). NGC 2383 Star 1=BD-20 1913 has a spectrum B0III (119). NGC 2420 The de-reddened colour-magnitud diagram in (371) was examined. NGC 2420 Proper motion study: (43). The magnitudes that appear in the NGC 2420 tables are de-reddened, although the correction is small. The NGC 2420 UBV photometry (232) cites stars 2221, 4102 and 4116 as blue NGC 2420 stragglers. NGC 2421 Star 2=LS 585 has a luminosity class V (359) and a spectrum NGC 2421 OB (312). Adopted cluster centre: star 20 (359). NGC 2422 Reference (240) cites star 1 as a blue straggler of spectrum NGC 2422 B2IVe and projected velocity v.sin i=320km/s. The ubvy-beta NGC 2422 photometry (305) gives star 1 the magnitudes v=5.684, b-y=0.004, NGC 2422 m1=0.042, c1=0.152, beta=2.554. Adopted cluster centre: star 81 NGC 2422 (308). NGC 2423 Star A=ADS 6223 was not measured in the photometric study (283), NGC 2423 but (93) does include it. It is a binary star (8.9, 9.7, rho=7") NGC 2423 and a cluster member (93). It has the integrated magnitudes NGC 2423 v=9.02, b-y=0.093, m1=0.763, c1=1.151, beta=2.838 (93). NGC 2437 Adopted cluster centre: star 75 (308). NGC 2439 Adopted cluster centre: star 205 (373). Star 2=CD-31 4911 has a NGC 2439 spectrum B1.5Ib and is cited as a blue straggler in (240). NGC 2447 The colour-magnitude diagram in (23) was examined, but the tables NGC 2447 of magnitudes were not available. Adopted cluster centre: NGC 2447 star 33. The Stromgren photometry (91) gives: 33(v=9.74, NGC 2447 b-y=0.011, m1=0.133, c1=1.091, beta=2.833), 35=ADS 6339(v=9.25, NGC 2447 b-y=-0.003, m1=0.148, c1=0.650, beta=2.794). Star 35 is a binary NGC 2447 (delta=0.5 mag, rho=0.7"). NGC 2451 175=HD 61831, 283=HD 63465. Adopted cluster centre: star 962 NGC 2451 (374). The ubvy-beta photometry (94) casts doubt on the physical NGC 2451 reality of this cluster and gives: 175(v=4.80, b-y=-0.080, NGC 2451 m1=0.105, c1=0.290), 283(v=5.10, b-y=-0.025, m1=0.070, NGC 2451 c1=0.310). Star 283 is cited as a blue straggler in (203). NGC 2451 Reference (169) gives the spectra: 175(B3V), 283 (B2IV/V). NGC 2477 Colour-magnitude diagram 8 in (147), which contains stars inside NGC 2477 a radius of 5' from the cluster centre, was examined. The NGC 2477 diagram shows an ill-defined turnoff. The apparent cluster NGC 2477 diameter was taken from (141). Reference (307) gives the NGC 2477 following spectra and projected velocities: NGC 2477 3004(A6, v.sin i=<40km/s), 5027(A7, v.sin i=60km/s), NGC 2477 7097(A7, v.sin i=150km/s). Both stars are not anomalously fast NGC 2477 rotators according to (307). NGC 2506 The colour-magnitude diagram examined in (233) includes stars NGC 2506 with a probability membership p>=90%, according to the proper NGC 2506 motion study (49). NGC 2516 Chart and star identifications in (70). Adopted cluster centre: NGC 2516 star d (70). The following membership probabilities are from NGC 2516 (195) and the spectra from (106): NGC 2516 15=HD 65987 (B9.5IVp(Si):/A0p, p=99%), NGC 2516 A=HD 66194=V374Car(B2Vne/B3ne), HD 65663=He 103(B9e), NGC 2516 HD 66341(p=99%), HD 66066(p=98%, visual double:delta=0.9 mag, NGC 2516 rho=5.5"), B=HD 65950(B8.5IIIp(Mn)/B9III, p=98%). References NGC 2516 (240) and (357) cite star A as a blue straggler. This star is NGC 2516 considered as an analogue of theta Car in (89) and (363). NGC 2533 Star 52(B3) is a probable non-member according to (217). NGC 2546 475=HD 68572(B3II/III), 575=HD 68862(A3V), 682=HD 68450(O9), NGC 2546 spectra are from (169). Reference (218) gives the spectra 9(B9), NGC 2546 476(B7 ), 477(B3::). NGC 2579 Reference (218) casts doubt on the physical reality of this NGC 2579 cluster. NGC 2632 = Praesepe. Proper motion study: (201). Identification chart is NGC 2632 in (183). Adopted cluster centre: star 313. Reference (229) gives NGC 2632 the following spectra: 50=HD 73120(A7IV), NGC 2632 224=HD 73618=ADS 6915(Am), 348=HD 73819(A6Vn). References (2) and NGC 2632 (240) cite star 265=HD 73666=40 Cnc as a blue straggler. NGC 2632 Reference (2) gives star 265 a spectrum A1Vp(Si) and a projected NGC 2632 velocity v.sin i=40km/s. NGC 2660 The colour-magnitude diagram shows an important dispersion (146). NGC 2660 The reddening seems to be variable across the cluster area. NGC 2669 2=HD 75105(B8III/IV), 24=HD 75067(B8/9IV/V(n)), spectra are from NGC 2669 (169). Adopted cluster centre: star 8 (360). NGC 2682 = M67. This cluster has a number of well-known blue stragglers. A NGC 2682 detailed spectral analysis of these stars may be seen in (231). NGC 2682 The extended photometric study (292) was used. It includes all NGC 2682 those stars with a membership probability p>50% according to the NGC 2682 proper motion study (291). The identification chart may be found NGC 2682 there. Adopted cluster centre: star 1023 (291). All the NGC 2682 candidates with p>=80% were listed. The following are the NGC 2682 membership probabilities and the often-quoted Fagerholm (99) NGC 2682 designations of some of the blue stragglers: 145(94%), 277(93%), NGC 2682 740(87%), 751(96%), 752(95%), 821(89%), 856(90%), 968=F153(95%), NGC 2682 975(90%), 977=F81(93%), 984=F134(95%), 997=F124(93%), NGC 2682 1005=F95(95%), 1031(91%), 1036(91%), 1066=F156(90%), NGC 2682 1072=F136(95%), 1082=F131(99%), 1165(93%), 1183(95%), 1195(96%), NGC 2682 1263(89%), 1267 (93%), 1273(91%), 1280(93%), 1284=F190 (95%), NGC 2682 1434(91%), 1440(94%), 1947(86%), 2204=F130(83%). The UBV NGC 2682 photometry (281) includes another star (not listed in the NGC 2682 catalogue) 1242b(V=12.73, B-V=0.37:, U-B=0.09, r/R=0.38). A NGC 2682 possible relation between the blue stragglers and the `clump' NGC 2682 stars is discussed in (90). In (272) the five bluest blue NGC 2682 stragglers are studied and two of them (F190 and F280) are found NGC 2682 to show infrared excesses that are interpreted as signs of the NGC 2682 presence of evolved companions (i.e. they may be Algol-type NGC 2682 binaries). In the case of F190, the binary character has NGC 2682 received support from the discovering of radial velocity NGC 2682 variations. These have been interpreted (242) as manifestations NGC 2682 of a binary with a period 4.18 days and eccentricity 0.205. This NGC 2682 star and theta Car in IC 2602 seem to be, at present, the best NGC 2682 candidates in support of the mass transfer theory to explain the NGC 2682 blue stragglers. However, the blue straggler F81 is above the NGC 2682 magnitude limit that the same theory predicts, although its NGC 2682 membership is still under discussion (231). Besides, F190 and NGC 2682 F184 are small-amplitude pulsating variables of delta Sct type NGC 2682 (130). In (230) it is shown that the spatial distribution of the NGC 2682 blue stragglers (strong central concentration) is similar to NGC 2682 that of the cluster binaries; an evolutionary relation between NGC 2682 the two populations is suggested (230). Star 1082 would be an NGC 2682 X-ray source (28). (97) cites several `red stragglers', and NGC 2682 (230) considers star F136 as belonging to an evolutionary stage NGC 2682 related to the blue stragglers (it is a binary star). Through NGC 2682 the determination of lithium abundances on some blue stragglers, NGC 2682 a form of mixing affecting their external layers has been NGC 2682 proposed (90). NGC 2818 Colour-magnitud diagrams in (264) and (324) were examined, the NGC 2818 last one covering a more extensive area. Star 108 is not NGC 2818 included in (264). NGC 2910 Identification chart and tables of magnitudes were not available. NGC 3033 Adopted cluster centre: star 11 (360). Both stars would be NGC 3033 non-members according to the same reference. NGC 3105 Star 101 has a spectrum Be(H-alpha emission) (118). It is NGC 3105 considered a cluster member according to its reddening and NGC 3105 distance modulus. NGC 3114 Adopted cluster centre:star 141 (225). The colour-magnitude NGC 3114 diagram is probably contaminated with field stars. The apparent NGC 3114 cluster diameter was taken from (301). In the ubvy-beta NGC 3114 photometry (298) stars 8, 9, 14, 15, 16, 18, 61 and 124 are NGC 3114 considered as blue stragglers candidates according to their NGC 3114 position in the beta-c diagram; five of these stars show NGC 3114 peculiarities. From the same reference are the following NGC 3114 spectra 3(B8III), 8(B8.5IIIp/B9p(Si)), 9(B2IVp/B3V), NGC 3114 10 (B8III/IV). NGC 3293 The colour-magnitude diagram in (339) was examined. Adopted NGC 3293 cluster centre (star 31) and apparent cluster diameter are from NGC 3293 (339). Star 1 (O7V(f)) is a probable member of the Car OB1 NGC 3293 association (339). NGC 3324 The de-reddened colour-magnitude diagram in (60) was examined. NGC 3324 The apparent cluster diameter was taken from the same reference. NGC 3330 Identification chart and tables of magnitudes were not available. NGC 3496 Adopted cluster centre: star 67 (304). NGC 3532 The cluster shows a remarkable concentration of its more massive NGC 3532 stars (113). Adopted cluster centre: star 1 (114). The following NGC 3532 spectra are from (169) and the membership probabilities are from NGC 3532 (194) 40=HD 96227(A, p=82%), 155=HD 96213 (A, p=33%), NGC 3532 215=HD 96564(B9IV, p=46%), 278=HD 96137(A0, p=87%), NGC 3532 317=HD 96473(B9/ A0V, p=85%), 337=HD 96668(A0V, p=89%), NGC 3532 420=HD 96059(B9III, p=60%). References (2) and (240) cite star NGC 3532 155 (A0IV) as a blue straggler. NGC 3572 Star 1=SLS 2199(OB) has a luminosity class I: (254). Adopted NGC 3572 cluster centre: star 11 (254). Reference (312) gives star 1 a NGC 3572 spectrum OBce. NGC 3603 The colour-magnitude diagram of the cluster core was examined NGC 3603 (304). Adopted cluster centre: star 66 (304). NGC 3680 Adopted cluster centre: star 31 (86). The ubvy photometry (95) NGC 3680 cites stars 3, 29, 33 and 56 as blue stragglers and stars 20 and NGC 3680 34 as `red stragglers', although stars 3, 29 and 56 are probable NGC 3680 non-members. The CCD photometry (8) considers stars 29 and 33 as NGC 3680 probable cluster members and stars 53 and 56 as likely NGC 3680 non-members. An important presence of binaries around the NGC 3680 turnoff is thought to be present (8). NGC 3766 Adopted cluster centre: star 20 (304). Reference (240) cites NGC 3766 star 5=HD 100856 (B1.5III) as a blue straggler. NGC 3766 Star 19=CD-60 3625, star 35=CD-60 3623. NGC 3960 Adopted cluster centre: star 37 (176). NGC 4349 Adopted cluster centre: star 151 (224). The apparent cluster NGC 4349 diameter was taken from (141). Reference (240) cites NGC 4349 star 131=DM-61 3143 as a blue straggler. NGC 4439 The apparent cluster diameter was taken from (250). NGC 4463 Adopted cluster centre: star 6 (250). Reference (119) gives NGC 4463 star 5 a spectrum B1III with probable emission in H-beta and NGC 4463 H-gamma. NGC 4755 = Kappa Crucis cluster. The colour-magnitude diagram with NGC 4755 probable members in (75) was examined. The apparent cluster NGC 4755 diameter was taken from (141). E=CPD -59 4552 (B1III), NGC 4755 F=CPD-59 456(B2III, beta Cep variable), G=CPD-59 4528(B0.5V, NGC 4755 variable), 301=CPD-59 4549(B1V), 305=CPD-59 4557(B0.5V, NGC 4755 visual binary). NGC 5168 Star 1=CPD-60 4735 has a luminosity class III (250). NGC 5281 Adopted cluster centre: star 7 (250). Star 3=HD 119682=He 3928 NGC 5281 has a spectrum OB+ce, 1e (312). It is cited as a blue straggler NGC 5281 in (240). NGC 5316 Adopted cluster centre: star 69 (282). Star 2 could not be NGC 5316 identified on the chart. Photometry (263) gives the cluster NGC 5316 E(B-V)=0.34 and age=0.12 Gyr. Stars 101 and 118 (B8III/IV) are NGC 5316 probable members (263). NGC 5460 Star 2=HD 123224. Adopted cluster centre: star 1 (54). NGC 5617 Adopted cluster centre: star 155 (152). Star 182=CPD-60 5385(Be). NGC 5617 Several of the candidates are mentioned as blue stragglers NGC 5617 in (152). NGC 5823 Adopted cluster centre: star 37 (37). NGC 6025 Star designations are HD 143... . Adopted cluster centre: NGC 6025 star 327 (166). Magnitudes are given (166) in the Harvard NGC 6025 system 340(pPg=7.93, pCi=-0.248, spectrum A), NGC 6025 348(pPg=7.01, pCi=-0.389, B3p), 449(pPg=7.99, pCi=-0.221, B). NGC 6025 Star HD 143348=He 31131(B3IVe) is cited as a blue straggler NGC 6025 in (240). NGC 6067 Star designations are CPD-53 7... . Reference (207) gives the NGC 6067 following spectra: 347(B5V/III), 353(B2III), 384(B8IV), NGC 6067 467(B8II/III). Star 353 is cited as a blue straggler in (240). NGC 6124 The colour-magnitude diagram with the most probable members was NGC 6124 examined (263). NGC 6134 Apparent cluster diameter was taken from (221). Star 1(B8) is a NGC 6134 probable cluster member (221). NGC 6167 Apparent cluster diameter was taken from (255). NGC 6192 Reddening, age and examined de-reddened colour-magnitude diagram NGC 6192 are from (196). However, reference (200) gives the cluster NGC 6192 E(B-V)=0.68, (B-V)o=0.2 (turnoff approx) and age=0.1 Gyr. NGC 6193 696=HD 149834, 702a=HD 150135(O6.5V((f))), NGC 6193 702b=HD 150136(O5III:n(f)), 678=HD 150041(B0III), spectra are NGC 6193 from (158). Adopted cluster centre: star 702a/b (158). NGC 6200 The de-reddened V vs. U-B colour-magnitude diagram was examined NGC 6200 (117). NGC 6204 This cluster is given an age of 0.2 Gyr in (200). NGC 6208 The following data are given in (221): 21(B7, non-member?), NGC 6208 157(B9, non-member?), 219 (B7, non-member?). NGC 6231 Star HD 152233(O6IIIfp, variable?) is cited as a blue straggler NGC 6231 in (240). NGC 6242 Apparent cluster diameter was taken from (250). NGC 6249 Star 2=CPD-44 8119 has a spectrum G8II (119). Adopted cluster NGC 6249 centre star 15 (255). NGC 6259 According to (154) there is a variable reddening across the NGC 6259 cluster area, with a mean value E(B-V)=0.68. It would explain NGC 6259 the observed dispersion around the turnoff. NGC 6281 The V vs. B-V and V vs. U-B colour-magnitude diagrams were NGC 6281 examined (103). Adopted cluster centre: star 72 (103). Lynga's NGC 6281 selected diameter was taken. 9=HD 153947(Ap(Si)), 11=HDE 322659, NGC 6281 15=HD 153948(Ap(Si)), spectra from (169). Star 9 is cited as a NGC 6281 blue straggler in (2), (240) and (259). In (103) this star is NGC 6281 considered a non-member, in (240) is given a spectrum NGC 6281 B9.5IVp(Si) and in (259) is found to be a variable of NGC 6281 period 2.662 days. NGC 6383 Star 1 is the massive binary HD 159176(O7V+O7V) (361). This star NGC 6383 is also the adopted cluster centre. Star 6 appears to be NGC 6383 measured in (83) but is not included in the photometric study NGC 6383 (116) which covers the cluster nucleus only. NGC 6425 Adopted cluster centre: star 54 (322). NGC 6451 Tables of magnitudes corresponding to the photometric study (319) NGC 6451 were not available. Reference (200) gives this cluster an NGC 6451 age of 0.2 Gyr. NGC 6475 Adopted cluster centre: star 65 (202). Star 26=HD 162374 is cited NGC 6475 as a blue straggler in (89), where is found to be similar to NGC 6475 theta Car. Reference (1) gives star 1 a spectrum B5IV and a NGC 6475 projected velocity v.sin i=<40km/s. Reference (41) gives the NGC 6475 same star B8V and deltaVR=30km/s (approx). In (2) and (240) NGC 6475 stars 26 and 56=HD 162586 are cited as blue stragglers. The NGC 6475 following UBV magnitudes are from (240), and the spectra and NGC 6475 projected velocities are from (2): 26(V=5.89, (B-V)o=-0.14, NGC 6475 (U-B)o=-0.68, B5IIIp(He(wk)), v.sin i<40km/s), 56(V=6.17, NGC 6475 (B-V)o=-0.09, (U-B)o=-0.39, B7.5IV, v.sin i=30km/s (approx)). NGC 6475 Star 56 is a visual binary (delta=0.0 mag, rho=0.3") (161). NGC 6499 Proper motion study: (294). NGC 6530 Lynga's selected angular diameter was taken. Adopted cluster NGC 6530 centre star 201 (345). The following membership probabilities NGC 6530 and spectra are from the proper motion study (345): NGC 6530 201(p=48%, 2IVN), 223(p=84%, B2IVNE), 270(p=39%, O6N). NGC 6530 Photometry (285) gives the spectra: 201(B1), 223(B1.5), 270(O9). NGC 6531 1=HD 164883, 3=HD 164844. NGC 6603 Reddening and age are from (30). Tables of magnitudes were not NGC 6603 available. NGC 6611 Lynga's selected angular diameter was taken. The de-reddened NGC 6611 colour-magnitude diagram in (368) was examined. NGC 6611 Star 205=HD 168076(O6e, RV var?) (368). The proper motion study NGC 6611 (327) gives this star a membership probability p=94%. NGC 6633 Chart and proper motion study in (289). Adopted cluster centre: NGC 6633 star 256. Star 66 has p=70% and star 32=HD 169959 has p=90%. NGC 6633 Star 159=HD 170563 is a cluster member according to (164). NGC 6633 References (2), (161), (170) and (237) cite stars 32 and 159 as NGC 6633 blue stragglers. In (2) the following spectra and projected NGC 6633 velocities are given: 32(A0III, v.sin i<40km/s), 159(B6IVp(Si), NGC 6633 v.sin i<20km/s). Reference (237) gives star 159 a spectrum NGC 6633 Am(A1-A3-A4). Star 32 is a visual binary (delta=1.6 mag, NGC 6633 rho=1.8") (161). NGC 6649 Colour-magnitude diagrams in (227) and (332) were examined. NGC 6664 Adopted cluster centre: star 15 (13). The Stromgren photometry NGC 6664 (299) cites the three blue stragglers. The following magnitudes NGC 6664 and spectra are from (299) and (204) respectively: NGC 6664 L(v=11.94, b-y=0.495, m1=-0.058, c1=0.202, beta=2.648, B3V), NGC 6664 F(v=10.97, b-y=0.517, m1=0.101, c1=0.196, beta=2.644, B3IV). NGC 6683 Star 156 has the following RGU magnitudes: G=10.95, G-R=0.69, NGC 6683 U-G=0.95. Adopted cluster centre: star 106 (379). NGC 6705 The colour-magnitud diagram in (309) was examined. It displays NGC 6705 stars with p>=90% according to the proper motion study (237). NGC 6705 Adopted cluster centre: star 1066 (237). The apparent cluster NGC 6705 diameter was taken from (309). References (2) and (240) cite NGC 6705 star 1095 as a blue straggler. In (2) this star is given a NGC 6705 spectrum (B3p). NGC 6709 Star 10 has a membership probability p=84% (142). NGC 6716 Reference (134) gives this cluster an apparent diameter of 22.6'. NGC 6716 Star 12=HD 175043 (B7IV) is a cluster member (340). Adopted NGC 6716 cluster centre: star 6 (340). NGC 6755 Reference (200) gives this cluster E(B-V)=0.77 and age=0.25 Gyr. NGC 6791 According to (197), stars SW05, 228 and 243 are probable cluster NGC 6791 members. Stars 228 and 243 are cited as blue stragglers in NGC 6791 (129). Stars SE09 and 223 are probable field stars according to NGC 6791 (197) and (129) respectively. Reference (197) also draws NGC 6791 attention to the presence of several `red stragglers' which are NGC 6791 probable cluster members. The CCD photometry (188) mentions the NGC 6791 existence of a possible FK Com variable star; no contact NGC 6791 binaries have been found. NGC 6802 The colour-magnitude diagram in (165) shows an important NGC 6802 dispersion; only candidates inside r/R=2 were taken. Adopted NGC 6802 cluster centre: star 82 (165). Stars 4 and 113 have spectra A7V NGC 6802 and F3II-III respectively (317). NGC 6811 Identification chart and tables of magnitudes were not available. NGC 6819 The apparent cluster diameter was taken from (141). Reference NGC 6819 (16) gives the cluster a tidal radius of 48'. Adopted cluster NGC 6819 centre star 550. Star 897 could not be identified on the chart. NGC 6819 Stars with p>50% (288) and inside r/R=3 were taken, although not NGC 6819 all the candidates are included in the proper motion study. NGC 6819 Star 552(p=49%) was also included. Stars 16*, 22*, 37, 133, 285, NGC 6819 419, 522, 687, and 889, are cited as blue stragglers in (16). NGC 6834 Colour-magnitude diagrams in (128), (165) and (245) were NGC 6834 examined. Reference (170) cites star 5' as a blue straggler, but NGC 6834 in (332) it is considered to be a normal evolved star that NGC 6834 appears bluer because of the differential reddening. NGC 6871 4=HD 227634(B0Ib), 5=HD 190864(O6), 7=BD+35 3956(B0.5V, RV var.), NGC 6871 8=HD 227586 (BII-III), 9=HD 227611(B0pe), spectra are from (69). NGC 6871 Reference (240) cites star 4(O7IIIf) as a blue straggler. NGC 6910 Adopted cluster centre: star 30 (165). Only stars inside r/R=1 NGC 6910 were taken. NGC 6913 Apparent cluster diameter was taken from (141). The following NGC 6913 membership probabilities are from the proper motion study (290): NGC 6913 7(63%), 9(72%), 13(33%), 17(83%). NGC 6939 The four stars are cited as blue stragglers in (42). Star 59 is NGC 6939 mentioned as a blue straggler in (129) although is a likely NGC 6939 non-member. The identification chart was not available. NGC 6940 The de-reddened colour-magnitude diagram with the probable NGC 6940 members was examined (209). Identification chart is in (352). NGC 6940 Adopted cluster centre: star 120. The following spectra are from NGC 6940 (209) 26(A5), 59(A3), 201(A0), 210(A0), 239(F0), 243(A2), NGC 6940 287(A3), 392(A0), 396(A5:), 528=BD+27 3793(B8). Stars 70 and 77 NGC 6940 (numbers of (352)) are cited as blue stragglers in (129) and NGC 6940 both are probable cluster members. NGC 7031 Adopted cluster centre: star 30 (151). NGC 7039 According to (300) there would be two clusters: the first one at NGC 7039 700 pc, and the second at 1500 pc having two blue stragglers. NGC 7039 Adopted cluster centre: star 182 (150). NGC 7062 Adopted cluster centre: star 50 (165). Proper motion study: NGC 7062 (184). 31(p=43%), 37(p=31%). NGC 7082 Adopted cluster centre (star 19) and apparent cluster diameter NGC 7082 are from (150). NGC 7086 Adopted cluster centre: star e (148). NGC 7142 Adopted cluster centre: star 130 (72). NGC 7235 Adopted cluster centre: star 5 (165). Star 4 has a spectrum NGC 7235 B1V (245). NGC 7243 Identification chart in (27). Adopted cluster centre: star 1. NGC 7243 Reference (162) gives star 370 the magnitudes v=9.95, b-y=0.052, NGC 7243 m1=0.093, c1=0.528, beta=2.742 and a spectrum A0Vp. It is a NGC 7243 cluster member according to its radial velocity and proper NGC 7243 motion (p=96%) (211). NGC 7245 Adopted cluster centre: star 102 (376). It is a non-member NGC 7245 according to (376), where star 8 is given the magnitudes NGC 7245 G=12.87, G-R=0.78, U-G=1.75. NGC 7380 Membership study: (17). NGC 7788 Adopted cluster centre: star 8 (26). NGC 7789 The first selection was based on the photometric study (38), NGC 7789 which is complete (it includes stars up to 7.5' from the cluster NGC 7789 centre) though rather old. There is no identification chart in NGC 7789 (38). Star designations and coordinates may be found in (206). NGC 7789 The second selection took into account the detailed membership NGC 7789 analysis for each blue straggler (35). Consequently, stars NGC 7789 considered in (35) as non-members are not included in the NGC 7789 catalogue. Reference (35) also gives the following categories: NGC 7789 non-member? to stars 168, 192, 1047 and 1119; member? to stars NGC 7789 197, 409 and 934; member to stars 88, 282, 316, 342, 371, 453, NGC 7789 677, 696, 746, 1095, 1168, 1211 and 1270. Star 677 seems to be NGC 7789 above the magnitude limit that the mass transfer theory NGC 7789 predicts, and star 1211 is on that limit (36). An extensive halo NGC 7789 of blue stragglers was described in (235), but these stars would NGC 7789 belong to the field (343); at most, the stragglers have the same NGC 7789 radial distribution that the cluster giants (343). In the ubvy NGC 7789 photometry of 28 blue stragglers (343) there appears to have no NGC 7789 peculiar stars among them, except star 1211 (Ap); in general, NGC 7789 the objects seem to have evolved from the ZAMS. Reference (318) NGC 7789 gives this cluster E(B-V)=0.31 and age=1.6 Gyr. NGC 7790 The UBV photometry (265) gives the cluster E(B-V)=0.64. Stars A NGC 7790 and B are probable members according to (265). Star A is cited NGC 7790 as a blue straggler in (240). Pismis 8 Star 1=CD-45 4411 has a spectrum B3V and is a cluster member Pismis 8 (114). Pismis 11 The cluster parameters are from (310). Pismis 17 The apparent cluster diameter was taken from (254). Pleiades Identification chart in (35). Adopted cluster centre: Pleiades star 25 Tau. The following spectra are from (35) and the Pleiades projected velocity is from (236): 468=HD 23302 (B6III), Pleiades 563=HD 23338(B6IV, v.sin i=133km/s), 1432=HD 23630(B7III). Pleiades Star 1432 (B8IIIe, v.sin i=230km/s) is cited as a blue straggler Pleiades in (240). Roslund 3 The de-reddened colour-magnitude diagram in (337) was examined. Roslund 3 All cluster parameters were taken from the same reference. Roslund 3 Adopted cluster centre: star 41. A(B6IIIn), B=HDE350990(B6IIIn). Roslund 3 Both stars are cluster members (337). The authors assign the Roslund 3 cause of the unusual positions to high rotation velocities. Ruprecht 36 Star 1=CD-26 5011 is a non-member according to (359). Adopted Ruprecht 36 cluster centre: star 5. Ruprecht 44 Star LS 909 has a spectrum O8:e (312) and is a probable member, Ruprecht 44 although it may belong to the Pup OB2 association of which this Ruprecht 44 cluster seems to be the nucleus (249). Ruprecht 79 The de-reddened colour-magnitude diagram was examined (365). Star Ruprecht 79 designations and adopted cluster centre (star J) are from (145). Ruprecht 92 Star 63 has the following RGU magnitudes: G=11.06, G-R=0.66, Ruprecht 92 U-G=0.81. Adopted cluster centre: star 51 (313). Ruprecht 97 The colour-magnitude diagram corresponding to area II was Ruprecht 97 examined (348). Ruprecht 98 Star 1=HD 104013 has a spectrum A0V (169). Adopted cluster Ruprecht 98 centre star 6 (250). Ruprecht 108 7=CPD-57 6116. Adopted cluster centre: star 5 (250). Stock 2 The de-reddened colour-magnitude diagram was examined. Adopted Stock 2 cluster centre: star 69 (205). 6(B7V, member?), Stock 2 31=BD+58 396(B0Ib, non-member?), 45=BD+58 400 (non-member?), Stock 2 110=BD+58 421(B9IV, member?), 138=BD+58 431(B9V, member?) (205). Stock 8 Reddening and age are from (228). Stock 13 Star 1=LSS 2245 has a spectrum OB (312) and a luminosity class V Stock 13 (254). Adopted cluster centre: star 4 (254). Tombaugh 1 Star 2 is cited as a probable blue straggler in (333). Trapezium = NGC 1976. Theta1 Ori A=HD 37022 (O7Vp, v.sin i=140km/s, var?). Trapezium The apparent cluster diameter was taken from (141). Trumpler 7 Star 6=CD-23 5500 has a luminosity class III (359). The given Trumpler 7 magnitudes include a weak companion at 4". Trumpler 10 Adopted cluster centre: star 9 (225). Trumpler 14 The de-reddened colour-magnitude diagram was examined (107). Trumpler 14 Lynga's selected angular diameter was taken. Identification Trumpler 14 chart is in (323). Adopted cluster centre: star HD 93129, which Trumpler 14 is a binary (O3If+O3V). Star HD 93250 has a spectrum O3V(f) Trumpler 14 (362). The cluster appears to be physically related to Trumpler 14 Trumpler 16 (74). Trumpler 16 The de-reddened colour-magnitude was examined (107). The cluster Trumpler 16 apparent diameter was taken from (336). Trumpler 17 Adopted cluster centre: star 15 (304). Trumpler 18 Adopted cluster centre: star 31 (354). 11=HD 306177(B6), Trumpler 18 14=BD-60 2619(B4), 16=HD 306174(B9). Reference (354) casts Trumpler 18 doubt on the physical reality of this cluster and gives it an Trumpler 18 age of 90 Myr. Trumpler 22 Stars 16(A1), 52(B6), 53(B3) are probable non-members according Trumpler 22 to their colours and spectra (216). Trumpler 24 153=SAO 227424(B3). The star could not be identified on the Trumpler 24 chart (160). Trumpler 27 The de-reddened colour-magnitude diagram was examined (322). Trumpler 28 3=HD 317971. Adopted cluster centre: star 41 (322). Trumpler 31 Identification chart and tables of magnitudes were not available. Trumpler 33 Star 25 has the following RGU magnitudes: G=11.30, G-R=0.49, Trumpler 33 U-G=0.91. Adopted cluster centre: star 5 (135). Trumpler 35 Adopted cluster centre: star 111 (299). vdB-Hagen 99 = van den Bergh-Hagen 99. The de-reddened colour-magnitude vdB-Hagen 99 diagram was examined (208). Reddening and age are from the same vdB-Hagen 99 reference.