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J/AJ/114/1087       Omega Cen radial velocities (Mayor+ 1997)

Radial velocities of southern stars obtained with the photoelectric scanner CORAVEL. VIII. Observations of 471 giant stars in omega Centauri. Mayor M., Meylan G., Udry S., Duquennoy A., Andersen J., Nordstrom B. <Astron. J. 114, 1087 (1997)> =1997AJ....114.1087M (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, globular ; Radial velocities Abstract: This paper presents a catalog of the mean radial velocities of 471 giant stars in the galactic globular cluster Omega Cen, the large majority of which are confirmed as cluster members. The typical uncertainty in the mean velocities is less than 1kms; a variability indicator and notes on chemical peculiarities are provided. In extension of earlier dynamical analyses of Omega Cen, based on part of the data presented here (Meylan & Mayor 1986A&A...166..122M; Meylan 1987A&A...184..144M; Meylan et al. 1995A&A...303..761M), a companion paper (Merritt et al. 1997AJ....114.1074M) rediscusses the subject, based on the full data set and a new theoretical approach, using nonparametric techniques. Objects: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 13 26 45.8 -47 28 36 omega Cen = NGC 5139 ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 71 481 Catalog of mean radial velocities for the ω Centauri program stars table1.tex 89 519 LaTeX version of table1.dat
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 4 I4 --- ID Identification number of the stars (1) 6- 10 F5.2 mag Vmag ? Visual magnitude 12- 15 F4.2 mag B-V ? B-V color index 17- 20 I4 arcsec Rsec ? Radial distance from the cluster center 22- 26 F5.3 rad PA ? Position angle, from North to East 28- 33 F6.2 km/s RV Mean radial velocity 35- 38 F4.2 km/s e_RV rms uncertainty of the mean radial velocity 40- 43 F4.2 km/s SigRV ? rms value of the radial velocity distribution 45- 46 I2 --- o_RV Number of individual observations for the RV determination 48- 52 F5.3 --- P(chi2) ? Probability that the observed SigRV is due to observational error only 54- 57 I4 d Deltat ? Span in days between the first and last measurements 59- 71 A13 --- Rem Remarks (2)
Note (1): 1-6999 for the original numbers from Tables I and II by Woolley (1966ROAn....2....1W) (use in SIMBAD: NGC 5139 NNNN) 7xxx indicate stars with the three last digits as in Table III by Woolley (1966ROAn....2....1W) (use in SIMBAD: Cl* NGC 5139 Mar xxx) 8xxx represent new stars following our own numbering (use in SIMBAD: Cl* NGC 5139 MMU xxx) 9xxx are new stars numbered by Freeman (private communication). (use in SIMBAD: NGC 5139 xxx) 8xxx and 9xxx are located in the figure Note (2): References: 1: Harding, 1962Obs....82..205H 2: Stock & Wroblewski, 1972PDAUC...2...59S 3: Cohen & Bell, 1986ApJ...305..698C 4: Cowley & Crampton, 1985PASP...97..835C 5: Bond, 1975ApJ...202L..47B 6: Lloyd Evans, 1983MNRAS.204..975L 7: Lloyd Evans, 1986SAAOC..10...11L
Acknowledgements: Stephane Udry References: Mayor et al., Paper I. 1983A&AS...54..495M Maurice et al., Paper II. 1984A&AS...57..275M Andersen et al., Paper III. 1985A&AS...59...15A Imbert et al., Paper IV. 1985A&AS...61..259I Prevot et al., Paper V. 1985A&AS...62...23P Maurice et al., Paper VI. 1987A&AS...67..423M Imbert et al., Paper VII. 1989A&AS...81..339I
(End) Patricia Bauer [CDS] 14-Nov-1997
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