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J/A+A/475/1003       Stellar parameters of G and K giant stars   (Hekker+, 2007)

Precise radial velocities of giant stars. III. Spectroscopic stellar parameters. Hekker S., Melendez J. <Astron. Astrophys. 475, 1003 (2007)> =2007A&A...475.1003H
ADC_Keywords: Stars, giant ; Rotational velocities ; Parallaxes, trigonometric Keywords: stars: abundances - stars: fundamental parameters - stars: rotation - methods: observational - techniques: spectroscopic Description: We present results of a spectroscopic analysis of 366 G and K giant stars. For 112 stars this is the first spectroscopic analysis. The stars were selected for a radial velocity survey, which is currently carried out at Lick observatory, using the Coude Auxiliary Telescope in conjunction with the Hamilton Echelle spectrograph. For each star a high signal to noise spectrum is available, which is used for the present analysis. The Teff, logg and iron abundance are determined by imposing excitation and ionisation equilibrium through stellar models. The micro turbulence is obtained by requiring no dependence of Fe I against equivalent width. The rotational velocity is obtained from a comparison with data from Gray (1989ApJ...347.1021G) and the macro turbulence is derived using Gray (2005PASP..117..711G). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table4.dat 71 366 Spectroscopic stellar parameters for 366 G and K giant stars
See also: I/239 : The Hipparcos and Tycho Catalogues (ESA 1997) J/A+A/430/165 : Radial velocities for 6691 K and M giants (Famaey+, 2005) Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 6 I6 --- HIP Hipparcos (Cat. I/239) number 8- 17 A10 --- HD/BD HD or BD number 19- 23 F5.2 mag Vmag Johnson V magnitude (1) 25- 29 F5.2 mas Plx Trigonometric parallax (1) 31- 34 F4.2 mas e_Plx Standard error in Plx (1) 36- 40 F5.3 mag B-V Johnson B-V colour index (1) 42- 45 I4 K Teff Effective temperature 47- 50 F4.2 [cm/s2] logg Surface gravity 52- 55 F4.2 km/s vmicro Micro turbulence velocity 57- 60 F4.2 [] A(Fe) Iron abundance (H=12) 62- 66 F5.2 km/s vsini ? Projected rotational velocity 68- 71 F4.2 km/s vmacro ? Macro turbulence velocity
Note (1): All from Hipparcos catalogue (Perryman et al., Cat. I/239)
Acknowledgements: Saskia Hekker, saskia(at) References: Hekker et al., Paper I 2006A&A...454..943H Reffert et al., Paper II 2006ApJ...652..661R
(End) Patricia Vannier [CDS] 13-Sep-2007
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