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J/AJ/136/506   Radial velocities of ω Centauri members (Da Costa+, 2008)

A spectroscopic survey for ω Centauri members at and beyond the cluster tidal radius. Da Costa G.S., Coleman M.G. <Astron. J., 136, 506-517 (2008)> =2008AJ....136..506D
ADC_Keywords: Clusters, globular ; Photometry, UBVRI ; Radial velocities Keywords: Galaxy: stellar content - globular clusters: general - globular clusters: individual (omega Centauri, NGC 5139) - stars: kinematics Abstract: We have used the two-degree field (2dF) multi-fiber spectrograph of the Anglo-Australian Telescope (AAT) to search for candidate members of the unusual globular cluster omega Centauri at and beyond the cluster tidal radius. Velocities with an accuracy of ∼10km/s were obtained for 4105 stars selected to lie in the vicinity of the lower giant branch in the cluster color-magnitude diagram (CMD) and which cover an area on the sky of ∼2.4x3.9°2 centered on the cluster. Description: The V- and I-band photometry was obtained with the 8kx8k CCD mosaic camera mounted on the ANU 1m telescope at Siding Spring Observatory. The observing run took place over 5 nights in 2003 May and a total of 16 configurations were observed: six in each of the N and S fields and two each in the E and W fields. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 55 154 Probable cluster member stars table3.dat 55 12 Probable non-cluster member stars table4.dat 55 1183 Non-member stars table5.dat 55 6 Candidate extra-tidal cluster members
See also: J/AJ/114/1087 : Omega Cen radial velocities (Mayor+ 1997) J/A+A/445/503 : Radial velocities in Omega Cen (NGC5139) (Reijns+, 2006) Byte-by-byte Description of file: table2.dat table3.dat table4.dat table5.dat
Bytes Format Units Label Explanations
1- 9 A9 --- ID Stellar identification, <[DC2008] NN-N-NNNNN> in Simbad 10 A1 --- n_ID [*] Note on ID (1) 11- 15 F5.1 arcmin Rad Radial distance from the cluster center 17- 20 I4 km/s RV Heliocentric radial velocity 22- 23 I2 --- o_ID Number of observations of ID 25- 26 I2 h RAh Hour of Right Ascension (J2000) 28- 29 I2 min RAm Minute of Right Ascension (J2000) 31- 34 F4.1 s RAs Second of Right Ascension (J2000) 36 A1 --- DE- Sign of the Declination (J2000) 37- 38 I2 deg DEd Degree of Declination (J2000) 40- 41 I2 arcmin DEm Arcminute of Declination (J2000) 43- 44 I2 arcsec DEs Arcsecond of Declination (J2000) 46- 50 F5.2 mag Vmag Coleman & Da Costa (2008, in prep.) V band magnitude 52- 55 F4.2 mag V-I Coleman & Da Costa (2008, in prep.) (V-I) color index
Note (1): Star 661259 excluded on the basis of discrepant proper motion; all others stars of table3 excluded on the basis of discrepant line strengths; Star 10228 is a carbon star.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 04-Feb-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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