J/ApJ/661/L155 Radial velocities RGB stars in omega Cen (Pancino+, 2007)
The rotation of subpopulations in ω Centauri.
Pancino E., Galfo A., Ferraro F.R., Bellazzini M.
<Astrophys. J., 661, L155-L158 (2007)>
=2007ApJ...661L.155P 2007ApJ...661L.155P
ADC_Keywords: Clusters, globular ; Stars, giant ; Radial velocities
Keywords: globular clusters: individual (NGC 5139) -
techniques: radial velocities
Abstract:
We present the first result of the Ital-FLAMES survey of red giant
branch (RGB) stars in omega Cen. Radial velocities with a precision of
∼0.5km/s are presented for 650 members of omega Cen observed with
FLAMES-GIRAFFE at the Very Large Telescope.
Description:
Observations were done with FLAMES at the ESO VLT in Paranal, Chile,
between 2003 May 22 and 28, within the Guaranteed Observing Time of
the Ital-FLAMES Consortium.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 60 649 Radial Velocity Measurements
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See also:
J/A+A/360/472 : Proper motions in omega Centauri (van Leeuwen+, 2000)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 6 I6 --- WFI Star Name,
Cl* NGC 5139 WFI NNNNNN in Simbad (1)
8- 18 F11.7 deg RAdeg Right Ascension in decimal degrees (J2000) (2)
20- 30 F11.7 deg DEdeg Declination in decimal degrees (J2000) (2)
32- 37 F6.3 mag Bmag Johnson B band magnitude (1)
39- 44 F6.3 mag Icmag Cousins I band magnitude (1)
46- 52 F7.3 km/s HRV Heliocentric Radial Velocity
54- 58 F5.3 km/s e_HRV Error on HRV
60 I1 --- Pop Population (3)
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Note (1): From Pancino et al. (2000ApJ...534L..83P 2000ApJ...534L..83P)
Note (2): Derived using van Leeuwen at al. (2000, Cat. J/A+A/360/472).
Note (3): Population classification according to Pancino et al.
(2000ApJ...534L..83P 2000ApJ...534L..83P, 2003MNRAS.345..683P 2003MNRAS.345..683P) as follows:
1 = RGB-MP, the most metal-poor component at [Ca/H]~-1.4.
2 = RGB-MInt, the metal intermediate component
3 = RGB-a, the extreme metal-rich component
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 15-Apr-2009