J/ApJ/663/1021 Log of ω Cen scientific images (Castellani+, 2007)
Star counts in the globular cluster ω Centauri.
I. Bright stellar components.
Castellani V., Calamida A., Bono G., Stetson P.B., Freyhammer L.M.,
Degl'Innocenti S., Moroni P.P., Monelli M., Corsi C.E., Nonino M.,
Buonanno R., Caputo F., Castellani M., Dall'Ora M., Del Principe M.,
Ferraro I., Iannicola G., Piersimoni A.M., Pulone L., Vuerli C.
<Astrophys. J., 663, 1021-1039 (2007)>
=2007ApJ...663.1021C 2007ApJ...663.1021C (SIMBAD/NED BibCode)
ADC_Keywords: Clusters, globular ; Observatory log
Keywords: globular clusters: individual (omega Centauri) - stars: evolution -
stars: horizontal-branch
Abstract:
We present a photometric investigation on HB, RGB, and MSTO stars in
omega Cen = NGC 5139. The center of the cluster was covered with a
mosaic of F435W, F625W, and F658N band data collected with HST ACS.
The outer reaches were covered with a mosaic of U-, B-, V-, and I-band
data collected with the 2.2 m ESO/MPI telescope. The final catalog
includes ∼1.7 million stars. We identified more than 3200 likely HB
stars, the largest sample ever collected in a globular cluster.
Description:
Photometric data discussed in this investigation belong to two
different sets from both space- (HST) and ground-based telescopes.
Multiband (U, B, V, I) data have been collected with the mosaic (2x4)
CCD camera Wide Field Imager (WFI) available at the 2.2m ESO/MPI
telescope (ESO, La Silla). These data have been retrieved from the ESO
science archive and include 8 U, 39 B, 51 V, and 26 I pointings.
Objects:
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RA (2000) DE Designation(s)
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13 26 45.9 -47 28 37 omega Cen = NGC 5139
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 79 124 Log of scientific CCD images of Omega Centauri
collected with the mosaic camera available at
the 2.2m ESO/MPI telescope
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See also:
J/AJ/108/1350 : Omega Cen FUV photometry (Whitney+, 1994)
J/AJ/119/1225 : Stroemgren photometry of Omega Cen & NGC 6397 (Hughes+ 2000)
J/AJ/119/1824 : Caby photometry of Ω Centauri (Rey+, 2000)
J/A+A/400/521 : Omega Cen XMM observations (Gendre+, 2003)
J/A+A/420/173 : JK photometry of Omega Cen red giants (Sollima+, 2004)
J/AJ/127/980 : vby and BVI photometry of Omega Cen giants (Hughes+, 2004)
J/MNRAS/357/265 : BVI photometry of omega Cen red giants (Sollima+, 2005)
J/ApJ/654/915 : Deep FORS1 BR photometry of omega Cen (Sollima+, 2007)
J/AJ/135/1395 : omega Cen Spitzer photometry (Boyer+, 2008)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 27 A27 --- Frame Frame identification (1)
29- 30 I2 h RAh Hour of Right Ascension (J2000)
32- 33 I2 min RAm Minute of Right Ascension (J2000)
35- 38 F4.1 s RAs Second of Right Ascension (J2000)
40 A1 --- DE- Sign of the Declination (J2000)
41- 42 I2 deg DEd Degree of Declination (J2000)
44- 45 I2 arcmin DEm Arcminute of Declination (J2000)
47- 50 F4.1 arcsec DEs Arcsecond of Declination (J2000)
52- 64 F13.7 d MJD Modified Julian Date (JD-2400000.5)
at exposure start
66- 72 F7.2 s Exp Exposure time
74 A1 --- Filt [UBVI] Filter name (2)
76- 79 F4.2 arcsec See Seeing of image
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Note (1): in the form WFI.YYYY-MM-DDThh:mm:ss.sss
Note (2): The U-band and B-band data collected in 1999 and 2000 observing
runs adopted the filters U/38 (ESO#841) and B/99 (ESO#842), while
subsequent data have been collected with the new filters U/50
(ESO#877) and B/123 (ESO#878).
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 15-Aug-2009