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J/A+A/398/141     Vertical distribution of galactic disk stars (Soubiran+, 2003)

Vertical distribution of Galactic disk stars. I. Kinematics and metallicity. Soubiran C., Bienayme O., Siebert A. <Astron. Astrophys. 398, 141 (2003)> =2003A&A...398..141S
ADC_Keywords: Galactic pole, north ; Radial velocities ; Abundances, [Fe/H] ; Proper motions ; Space velocities ; Effective temperatures Keywords: stars: kinematics - stars: abundances - Galaxy: disk - Galaxy: kinematics and dynamics - Galaxy: structure - Galaxy: solar neighbourhood Abstract: Nearly 400 Tycho-2 (Cat. I/259) stars have been observed in a 720 square degree field in the direction of the North Galactic Pole with the high resolution echelle spectrograph ELODIE. Absolute magnitudes, effective temperatures, gravities and metallicities have been estimated, as well as distances and 3D velocities. Most of these stars are clump giants and span typical distances from 200pc to 800pc to the galactic mid-plane. This new sample, free of any kinematical and metallicity bias, is used to investigate the vertical distribution of disk stars. Description: Basic data and atmospheric parameters are given for the 387 stars of the NGP sample. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file catalog.dat 131 387 Stellar parameters of the NGP sample
See also: I/259 : The Tycho-2 Catalogue (Hog+ 2000) III/218 : ELODIE archive (Prugniel+, 2001) Byte-by-byte Description of file: catalog.dat
Bytes Format Units Label Explanations
2 A1 --- --- [T] 3- 14 A12 --- TYC Tycho-2 (Cat. I/259) identifier 16- 27 F12.8 h RAh Tycho-2 mean right ascension (J2000) (1) 29- 40 F12.8 deg DEdeg Tycho-2 mean declination (J2000) (1) 42- 47 F6.3 mag Vmag Johnson V magnitude (1) 49- 54 F6.3 mag B-V Johnson B-V colour (1) 56- 61 F6.1 mas/yr pmRA Tycho-2 proper motion in right ascension (1) 63- 68 F6.1 mas/yr pmDE Tycho-2 proper motion in declination (1) 70- 76 F7.2 km/s HRV ELODIE heliocentric radial velocity (2) 78- 81 I4 K Teff Effective temperature from TGMET (2) (3) 83- 86 F4.2 [cm/s2] logg Logarithm of gravity from TGMET (2) (3) 88- 92 F5.2 [Sun] [Fe/H] Iron abundance from TGMET (2) (3) 94- 99 F6.3 mag VMAG Absolute magnitude from TGMET (2) (3) 101-106 F6.1 pc z Distance to the galactic mid-plan (2) 108-113 F6.1 km/s Uvel U velocity with respect to the Sun (2) (4) 115-120 F6.1 km/s Vvel V velocity with respect to the Sun (2) 122-127 F6.1 km/s Wvel W velocity with respect to the Sun (2) 129-131 A3 --- Notes [SB2 EP] Peculiar spectrum (5)
Note (1): Individual errors can be retrieved from the Tycho-2 catalog Note (2): Mean error bars are discussed in the paper Note (3): TGMET is an automated method of parametrisation, based on a criterion of minimum distance to an empirical library of reference spectra (Katz et al., 1998A&A...338..151K; Soubiran et al., 1998, Cat. J/A+AS/133/221). Note (4): Uvel is positive towards the Galactic Center Note (5): Notes: SB2 indicates a double lined spectrum, EP indicates an enlarged profile (FWHM>14km/s)
Acknowledgements: Caroline Soubiran
(End) Patricia Bauer [CDS] 22-Nov-2002
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