J/A+A/563/A15 Metallicity and kinematics in Galactic bar (Babusiaux+, 2014)
Metallicity and kinematics of the bar in situ.
Babusiaux C., Katz D., Hill V., Royer F., Gomez A., Arenou F., Combes F.,
Di Matteo P., Gilmore G., Haywood M., Robin A.C., Rodriguez-Fernandez N.,
Sartoretti P. Schultheis M.
<Astron. Astrophys. 563, A15 (2014)>
=2014A&A...563A..15B 2014A&A...563A..15B
ADC_Keywords: Galactic plane ; Abundances, [Fe/H] ; Radial velocities
Keywords: Galaxy: bulge - Galaxy: formation - Galaxy: abundances -
Galaxy: kinematics and dynamics
Description:
We observe red clump stars in four fields along the Galactic bar major
axis (l=10°, -6°, 6° and b=0°, plus a field at
l=0°, b=1°) with low-resolution spectroscopy from
FLAMES/GIRAFFE (setup LR08) at the VLT, observing around the CaII
triplet. We developed robust methods to extract radial velocity and
metallicity estimates from these low signal-to-noise spectra. Results
have been derived by fixing atmospheric parameters typical of a red
clump star (Teff=4750K, logg=2.5). For some targets, the metallicity
could not be derived.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 97 399 Red clump stars data
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See also:
J/MNRAS/349/1059 : OGLE variables in Galactic bar (Wray+, 2004)
J/ApJ/691/1387 : Spectroscopy of the Galactic bar. I. (Rangwala+, 2009)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Star name (1)
11- 12 I2 h RAh Right Ascension J2000 (hours)
14- 15 I2 min RAm Right Ascension J2000 (minutes)
17- 22 F6.3 s RAs Right Ascension J2000 (seconds)
24 A1 --- DE- Declination J2000 (sign)
25- 26 I2 deg DEd Declination J2000 (degrees)
28- 29 I2 arcmin DEm Declination J2000 (minutes)
31- 36 F6.3 arcsec DEs Declination J2000 (seconds)
38- 43 F6.3 mag Jmag Magnitude in the J band
45- 49 F5.3 mag e_Jmag Error on the magnitude in the J band
51- 56 F6.3 mag Hmag Magnitude in the H band
58- 62 F5.3 mag e_Hmag Error on the magnitude in the H band
64- 69 F6.3 mag Kmag Magnitude in the K band
71- 75 F5.3 mag e_Kmag Error on the magnitude in the K band
77- 82 F6.1 km/s RV Radial velocity
84- 86 F3.1 km/s e_RV Error on the Radial velocity
88- 92 F5.2 [Sun] [Fe/H] ? Metallicity
94- 97 F4.2 [Sun] e_[Fe/H] ? Error on the metallicity
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Note (1): star names is 'FFF_NNNNN', where 'FFF' is the field and
'NNNNN' a number in the fields. The fields are:
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Field (l,b)° Period Nobs Nstars Imax S/N
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9P (+9.58,-0.08) 83 6 105 18.5 7-18
5PN (+5.65,-0.27) 79+83 2+5 102 18. 9-15
C32 (+0.00,+1.02) 79 2 114 16.3 16-22
5NN (-5.75,-0.22) 79+com 9+2 108 18. 7-16
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(periods: 79=2007, 83=2009)
Acknowledgements:
Carine Babusiaux, carine.babusiaux(at)obspm.fr
(End) Carine Babusiaux [Obs. Paris], Patricia Vannier [CDS] 08-Jan-2014