Observations and Atmospheric Parameters of Super-Metal-rich Candidates

Details Observations and Atmospheric Parameters of Super-Metal-rich Candidates Observations and Atmospheric Parameters of Super-Metal-rich Candidates

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000pasp..112.1455m&link_type=abstract

The Publications of the Astronomical Society of the Pacific, Volume 112, Issue 777, pp. 1455-1466.

Astronomy and Astrophysics

Astronomy

12

Stars: Fundamental Parameters

Scientific paper

The spectroscopic properties of a sample of 92 Population I bright stars (V<8) with literature values of [Fe/H]>=+0.1 are reviewed in order to study the metallicity scale at supersolar regimes. For 73 of these candidate super-metal-rich (SMR) stars we identified the photospheric fiducial parameters (Teff, logg, [M/H]) from among published parameter sets via a comparison of new observations in the wavelength range 5034-5398 Å with synthetic spectra derived from the 1997 database of Chavez et al. As a main issue in our analysis, we find that a ``genuine'' SMR stellar component in the Galactic disk exists with more than one-fourth of the stars in our sample fulfilling the criterion [Fe/H]>=0.2 dex, and three of them as rich as [Fe/H]>+0.4 dex. Based on observations collected at the INAOE ``G. Haro'' Observatory, Cananea (Mexico).

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