Metal-poor solar-type stars spectroscopy and masses (Sousa+, 2011)

Details Metal-poor solar-type stars spectroscopy and masses (Sousa+, 2011) Metal-poor solar-type stars spectroscopy and masses (Sousa+, 2011)

Jan 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ycat..35269099s&link_type=abstract

VizieR On-line Data Catalog: J/A+A/526/A99. Originally published in: 2011A&A...526A..99S

Astronomy and Astrophysics

Astronomy

Stars: Nearby, Spectroscopy, Parallaxes: Trigonometric, Photometry, Stars: Masses

Scientific paper

The stellar parameters were determined using an LTE analysis based on equivalent widths (EW) of iron lines and by imposing excitation and ionization equilibrium. The ARES code (that can be downloaded at http://www.astro.up.pt/~sousasag/ares ) was used to allow automatic and systematic derivation of the stellar parameters. Precise stellar parameters and metallicities were obtained for 97 low metal-content stars. We also present the derived masses, luminosities, and new parallaxes estimations based on the derived parameters, and compare our spectroscopic parameters with an infra-red flux method calibration to check the consistency of our method in metal poor stars. Both methods seems to give the same effective temperature scale.
(3 data files).

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