Access to Astronomical Catalogues

← Click to display the menu
J/AJ/127/958        CCD BV photometry on Omega Cen           (Rey+, 2004)

CCD photometry of the globular cluster ω Centauri. II. Stellar populations and age-metallicity relation. Rey S.-C., Lee Y.-W., Ree C.H., Joo J.-M., Sohn Y.-J., Walker A.R. <Astron. J., 127, 958-979 (2004)> =2004AJ....127..958R
ADC_Keywords: Clusters, globular ; Photometry, CCD ; Photometry, UBV Keywords: color-magnitude diagrams - globular clusters: general - globular clusters: individual (ω Centauri) Abstract: We present wide-field and high-precision BV and Ca and Stroemgren by photometry of ω Centauri, which represents one of the most extensive photometric surveys to date for this cluster. The member stars of ω Cen are well discriminated from foreground Galactic field stars in the hk[=(Ca-b)-(b-y)] versus b-y diagram. The resulting "cleaned" color-magnitude diagram (CMD) has allowed us to obtain an accurate distribution of the red horizontal-branch (HB) and the asymptotic giant branch stars. Description: All the observations were made using the Cerro Tololo Inter-American Observatory (CTIO) 0.9m telescope and Tektronix 2048 No. 3 CCD during six nights of an observing run in 1996 April 5-10. Here, only selected stars with a frame-to-frame errors in the B and V magnitudes of less than 0.05mag are presented. The full data table will be published in a forthcoming paper. Objects: -------------------------------------------------- RA (2000) DE Designation(s) -------------------------------------------------- 13 26 45.9 -47 28 37 omega Cen = NGC 5139 -------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 49 84096 CCD Photometry for member stars of ω Cen table3.dat 49 835 CCD Photometry for field star candidates with V<16.0
See also: J/AJ/127/980 : vby and BVI photometry of Omega Cen giants (Hughes+, 2004) J/A+AS/115/297 : BVRI photometry of Central Field of Omega Cen (Lynga+, 1996) J/AJ/108/1350 : Omega Cen FUV photometry (Whitney+, 1994) J/AJ/119/1225 : Stroemgren photometry of Omega Cen & NGC 6397 (Hughes+, 2000) J/MNRAS/250/314 : CCD photometry of omega Cen (Noble+ 1991) J/PASP/106/828 : BVRI photometry of Omega Cen (Walker 1994) Byte-by-byte Description of file: table2.dat table3.dat
Bytes Format Units Label Explanations
1- 5 I5 --- RLR Stellar identification number (1) 7- 13 F7.2 pix Xpos The X pixel coordinate (2) 15- 22 F8.2 pix Ypos The Y pixel coordinate (2) 24- 29 F6.3 mag Vmag The V band magnitude 31- 35 F5.3 mag e_Vmag The 1σ error in Vmag 37- 42 F6.3 mag B-V The (B-V) color 44- 48 F5.3 mag e_B-V The 1σ error in B-V
Note (1): Table 2 : Cl* NGC 5139 RLR NNNNN in Simbad Table 3 : Cl* NGC 5139 RLR FNNN in Simbad Note (2): Relative to the origin of the field F1, (RA, DE) = (13 28 04.60, -47 41 32.10) (J2000.0). 1pix = 0.396".
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 02-Jul-2004
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

catalogue service

© UDS/CNRS

Contact