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J/MNRAS/407/465     Fast-rotating M dwarfs in NGC2516        (Jackson+, 2010)

Chromospheric activity among fast-rotating M dwarfs in the open cluster NGC2516. Jackson R.J., Jeffries R.D. <Mon. Not. R. Astron. Soc., 407, 465-478 (2010)> =2010MNRAS.407..465J
ADC_Keywords: Clusters, open ; Stars, M-type ; Radial velocities ; Equivalent widths Keywords: stars: low-mass - stars: rotation - stars: magnetic activity - open clusters and associations: individual: NGC 2516 Abstract: We report radial velocities (RVs), projected equatorial velocities (vsini) and CaII triplet (CaT) chromospheric activity indices for 237 late-K to mid-M candidate members of the young open cluster NGC 2516. These stars have published rotation periods between 0.1 and 15d. Intermediate-resolution spectra were obtained using the Giraffe spectrograph at the Very Large Telescope. Membership was confirmed on the basis of their RVs for 210 targets. Description: The targets were observed using the European Southern Observatory (ESO) 8.2-m aperture VLT (UT-2 Kueyen) FLAMES fibre instrument, feeding the Giraffe and UVES spectrographs. Between 22 and 55 of our targets were observed with Giraffe in each of eight separate fibre configurations, on between 2007/11/27 and 2007/12/30. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 57 9 Details of observing program 380.D-0479 table2.dat 94 237 Velocity data measured for targets in the open cluster NGC 2516 table3.dat 83 237 Rotation periods, convective turnover times, Rossby numbers, EWs and chromospheric activity indices for the first two CaT lines (8498 and 8542Å) in candidate members of NGC 2516
See also: J/MNRAS/377/741 : VIc photometry of NGC 2516 (Irwin+, 2007) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 6 I6 --- Ref Reference number 8 I1 --- Run Run number 10- 19 A10 "YYYY-MM-DD" Obs.date Observation date 21- 25 A5 "h:m" Obs.time Star time of observation 27- 33 F7.3 deg RAdeg Field centre right ascension (J2000) 35- 41 F7.3 deg DEdeg Field centre declination (J2000) 43- 46 F4.2 arcsec Seeing Average seeing 48- 51 F4.2 --- Airmass Airmass 53- 54 I2 --- Nt Number of targets 56- 57 I2 --- Nt2 Number of new targets observed
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 6 A6 --- --- [N2516-] 7- 14 A8 --- [IHA2007] Source name (N-N-NNNN) (G1) 17 I1 h RAh Right ascension (J2000) (G1) 19- 20 I2 min RAm Right ascension (J2000) (G1) 22- 26 F5.2 s RAs Right ascension (J2000) (G1) 28 A1 --- DE- Declination sign (J2000) (G1) 29- 30 I2 deg DEd Declination (J2000) (G1) 32- 33 I2 arcmin DEm Declination (J2000) (G1) 35- 38 F4.1 arcsec DEs Declination (J2000) (G1) 40- 45 F6.3 d Per Period (G1) 47- 51 F5.2 mag Vmag V magnitude (2) 53- 57 F5.2 mag Imag I_J_ magnitude (2) 59- 63 F5.2 mag Kmag ?=- CIT K magnitude (3) 64 A1 --- n_Kmag [*] Note on Kmag (4) 66- 67 I2 --- S/N Signal-to-noise ratio 69- 73 F5.2 km/s RV Radial velocity 75- 78 F4.1 km/s e_RV rms uncertainty on RV 80 A1 --- l_vsini Limit flag on vsini 81- 85 F5.1 km/s vsini Rotational velocity 87- 89 F3.1 km/s e_vsini rms uncertainty on vsini 91- 93 A3 --- Run Run number(s) 94 A1 --- f_[IHA2007] [*] * indicates a non-member
Note (2): From Irwin et al. (2007, Cat. J/MNRAS/377/741), but corrected with ΔI=0.080-0.0076I and Δ(V-I)=0.300-0.153(V-I). Note (3): K-band photometry comes from 2MASS, but is transformed to the CIT system (KCIT=K2MASS+0.024) Note (4): In original files, Kmag=0.020, transformed into "---" at CDS.
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 6 A6 --- --- [N2516-] 7- 14 A8 --- [IHA2007] Source name (N-N-NNNN) (G1) 17- 21 F5.2 [Lsun] logL Luminosity 23- 28 F6.3 d Per Period (G1) 30- 32 I3 d T/0 Turnover time 34- 38 F5.2 [-] logNR Rossby number 40- 43 F4.2 0.1nm W8488 CaT (8488Å) equivalent width 45- 48 F4.2 0.1nm e_W8488 rms uncertainty on W8488 50- 53 F4.2 0.1nm W8542 CaT (8542Å) equivalent width 55- 58 F4.2 0.1nm e_W8542 rms uncertainty on W8542 60- 64 F5.2 [-] logR'1 Chromospheric activity index fo CaT (8488Å) 66- 68 F3.2 [-] e_logR'1 rms uncertainty on logR'1 70- 74 F5.2 [-] logR'2 Chromospheric activity index fo CaT (8542Å) 76- 78 F3.2 [-] e_logR'2 rms uncertainty on logR'2 80- 82 A3 --- Run Run(s) number 83 A1 --- f_[IHA2007] [*] for stars falling outside our membership criteria
Global notes: Note (G1): From Table 1 of Irwin et al. (2007, Cat. J/MNRAS/377/741)
History: From electronic version of the journal
(End) Patricia Vannier [CDS] 31-Jan-2011
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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