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VIII/32            Extragalactic sources at 5GHz             (Jenkins+ 1977)

Observations of 104 extragalactic radio sources with the Cambridge 5-km telescope at 5 GHz. Jenkins C.J., Pooley G.G., Riley J.M. <Mem. R. Astron. Soc., 84, 61 (1977)> =1977MmRAS..84...61J
ADC_Keywords: Radio sources Abstract: One hundred and four radio sources from the 3C and 4C catalogues have been mapped with a resolution of 2arcsec in RA and 2cosecδarcsec in DE. The results are presented here as contour maps and in tabular form, with accurate measurements of the positions of optical objects in the fields. Description: A complete sample of 3CR sources has now been observed with the 5-km telescope at 5GHz. The sample was selected according to the following criteria: (a) The flux density of each individual source at 178MHz is greater than or equal to 10Jy according to the compilation given by Kellermann et al. (1969ApJ...157....1K). (b) DE>10°. (c) |b|>10°. There are 166 sources in this sample of which one, 3C 326, was not observed as it was originally thought to be galactic. Since it now seems likely to be extragalactic we have included it in the sample. The sample is listed in Table 2. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 117 348 Extragalactic radio sources notes.dat 80 104 Individual notes table2.dat 21 166 Sample
See also: VIII/1 : The 3C and 3CR Catalogues (Edge+ 1959-1962) VIII/4 : Fourth Cambridge Survey (4C) (Pilkington+ 1965; Gower+ 1967) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 7 A7 --- Name Source number from the 3C or 4C catalogues 8 A1 --- n_Name [*] note detailed in notes.dat file 9- 10 I2 --- Nspa ? Number of spacings, N used in the synthesis (see Section 2). 12 A1 --- f_Name [S] S for the source 14 A1 --- n_RAh [#] # = optical position 15 A1 --- u_RAh [(] Note (1) 16- 17 I2 h RAh ? Radio peak of emission right ascension (1950) 19- 20 I2 min RAm ? Radio peak of emission right ascension (1950) 22- 27 F6.3 s RAs ? Radio peak of emission right ascension (1950) 29- 33 F5.3 s e_RAs ? rms uncertainty on right ascension (2) 34 A1 --- DE- ? Radio peak declination sign (1950) 35- 36 I2 deg DEd ? Radio peak of emission declination (1950) 38- 39 I2 arcmin DEm ? Radio peak of emission declination (1950) 41- 45 F5.2 arcsec DEs ? Radio peak of emission declination (1950) 47- 51 F5.2 arcsec e_DEs ? rms uncertainty in DEs (2) 52 A1 --- u_DEd [)] Note (1) 54- 56 I3 deg PA ? Position angle of the major axis of the component, if well defined 58 A1 --- l_omega1 Limit flag on omega1 59- 62 F4.1 arcsec omega1 ? Angular extent of each component parallel and perpendicular to its major axis (3) 63 A1 --- u_omega1 Uncertainty flag on omega1 65 A1 --- l_omega2 Limit flag on omega2 66- 69 F4.1 arcsec omega2 ? Angular extent of each component parallel and perpendicular to its major axis (3) 70 A1 --- u_omega2 Uncertainty flag on omega2 72- 75 I4 mJy S5GHz ? Flux density of each component at 5 GHz 77- 79 I3 mJy e_S5GHz ? rms uncertainty on S5GHz 82- 87 F6.1 arcsec Theta ? Overall angular extent of the source (4) 88 A1 --- u_Theta Uncertainty flag on theta 90- 93 I4 mJy I5GHz ? Integrated flux density of the source at 5GHz (5) 95- 97 I3 mJy e_I5GHz ? rms uncertainty on I5GHz 100-105 F6.4 --- z ? Redshift of the associated object. 108-111 I4 Mpc Dist ? Distance derived from the redshift (6) 113 A1 --- l_Size Limit flag on Size 114-116 I3 kpc Size ? Total linear size of the source if the angular size is that given in column Theta 117 A1 --- u_Size Uncertainty flag on size
Note (1): The coordinates in brackets are unlikely to be related to the radio source. Note (2): No error is quoted if the component has no well-defined peak. Note (3): The angular extents of each component parallel and perpendicular to its major axis; if no position angle is given, the quoted angular sizes are in RA and DE. When the component is barely resolved, a Gaussian brightness distribution is assumed in estimating its angular extent. For more complex components the quoted sizes are only approximate. Note (4): This is usually the separation of the outermost peaks of a multiple source. Note (5): This is the maximum amplitude on the smallest interferometer spacing used in the observations. For 3C sources the values measured in this way agree well with those given by Kellermann, Pauliny-Toth & Williams (1974MNRAS.169..477P). Note (6): An Einstein-de Sitter model has been used, assuming H0=50km/s/Mpc, Ω=1 and q0=0.5.
Byte-by-byte Description of file: notes.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Name 3C or 4C name 10- 80 A71 --- Note Text of the note
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 8 A8 --- Name 3C number 11- 16 F6.1 --- S178MHz Flux density at 178 MHz on the scale of Kellermann et al., 1969ApJ...157....1K 19- 21 A3 --- Ref Reference to the 5-GHz, 5-km telescope (1)
Note (1): References: ER 1976MNRAS.174..411E, Elsmore & Ryle H 1974MNRAS.168..491H, Hargrave HM 1975MNRAS.173...37H, Hargrave & McEllin JPR 1977MmRAS..84...61J, Jenkins et al., this paper JS 1976MNRAS.174..327J, Jenkins & Scheuer L 1975MNRAS.173..309L, Longair N 1973MNRAS.165..369N, Northover PH 1974MNRAS.169..477P, Pooley & Henbest RB 1973MNRAS.164..271R, Riley & Branson RP 1976MmRAS..80..105R, Riley & Pooley T1 1975MNRAS.170..281T, Turland T2 1975MNRAS.172..181T, Turland
Acknowledgements: From Heinz A. Andernach (R806 in his list)
(End) Patricia Bauer [CDS] 27-Nov-2003
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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