J/A+A/445/503 Radial velocities in Omega Cen (NGC5139) (Reijns+, 2006)
Radial velocities in the globular cluster Omega Centauri.
Reijns R.A., Seitzer P., Arnold R., Freeman K.C., Ingerson T.,
van den Bosch R.C.E., van de Ven G., de Zeeuw P.T.
<Astron. Astrophys. 445, 503 (2006)>
=2006A&A...445..503R 2006A&A...445..503R
ADC_Keywords: Clusters, globular ; Radial velocities
Keywords: radial velocities - Galaxy: globular clusters: individual: NGC 5139 -
Galaxy: kinematics and dynamics
Description:
List of 1966 radial velocity measurements of stars in globular cluster
Omega Centauri (NGC 5139) taken with the ARGUS multi-object
spectrometer at the CTIO 4m Blanco telescope. All the stars have a B
magnitude brighter than 16.5. The median error is less than 2km/s.
The stars are numbered using their LID (Leiden Identification Number)
from van Leeuwen et.al. (2000, Cat. J/A+A/360/472). In a companion
paper by van de Ven et al. (2006A&A...445..513V 2006A&A...445..513V), we correct these
radial velocities for the perspective rotation caused by the space
motion of the cluster.
Additionaly 339 stars where measured. These consist of (i) 87 stars
with B-V<0.4, (ii) 252 stars not in the van Leeuwen et al. catalog.
We suspect that that many of these stars have an erroneous value for
their radial velocity.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table4.dat 23 1966 Radial velocities of stars in Omega Centauri
tablea1.dat 50 339 Additional radial velocities
--------------------------------------------------------------------------------
See also:
J/A+A/360/472 : Proper motions in omega Centauri (van Leeuwen+, 2000)
Byte-by-byte Description of file: table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
2- 6 I5 --- LID LID number from van Leeuwen et. al., 2000, Cat.
J/A+A/360/472, Cl* NGC 5139 Leid NNNNN in Simbad
8- 14 F7.1 km/s RV Radial velocity
17- 20 F4.1 km/s e_RV Standard error on RV
22- 24 I3 --- o_RV Number of individual measurements
--------------------------------------------------------------------------------
Byte-by-byte Description of file: tablea1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
2- 6 I5 --- LID LID number from van Leeuwen et al., 2000, Cat.
J/A+A/360/472, Cl* NGC 5139 Leid NNNNN in Simbad
9- 16 F8.4 deg RAdeg Right Ascension (ICRS)
18- 26 F9.5 deg DEdeg Declination (ICRS)
28- 34 F7.1 km/s RV Radial velocity
37- 40 F4.1 km/s e_RV Standard error on RV
42- 43 I2 --- o_RV Number of individual measurements
47- 50 F4.1 mag Bmag B magnitude
--------------------------------------------------------------------------------
Acknowledgements: Tim de Zeeuw, dezeeuw(at)strw.leidenuniv.nl
(End) Tim de Zeeuw [Sterrewacht Leiden], Patricia Vannier [CDS] 24-Nov-2005