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Observations and Atmospheric Parameters of Super-Metal-rich Candidates

Journal
Date Issued
2000
Author(s)
Malagnini, M. L.
•
•
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Chavez, M.
DOI
Abstract
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).
Volume
112
Issue
777
Start page
1455
Uri
Url
Issn Identifier
0004-6280
Ads BibCode
2000PASP..112.1455M
Rights
open.access
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