Abstract
view Abstract Citations (41) References (50) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Relative abundances in metal-poor stars. II. The carbon-to-iron ratio. Peterson, R. C. ; Sneden, C. Abstract The abundance of carbon has been determined (or an upper limit established) by spectral synthesis of CH features in a dozen field dwarfs and subgiants of metallicities 1/5 to 1/100 solar. All program stars were selected from the Eggen high-velocity catalog, observed with the SAO echelle-Kron system at Mount Hopkins, Arizona, and analyzed by using model-atmosphere computations of broad-band colors and weak atomic lines. The CH features reveal that all these stars have essentially the solar carbon-to-iron ratio, given the plus or minus 0.2 dex uncertainty in the normalization to the solar value, and the plus or minus 0.14 dex uncertainty in an individual stellar carbon-abundance determination relative to others. Several implications of this uniformity for studies of the evolution of the Galaxy as a whole are briefly discussed. Publication: The Astrophysical Journal Pub Date: November 1978 DOI: 10.1086/156557 Bibcode: 1978ApJ...225..913P Keywords: Abundance; Carbon; Dwarf Stars; Iron; Stellar Atmospheres; Stellar Models; Galactic Evolution; Hydrogen Atoms; Metals; Spectrum Analysis; Astrophysics; Carbon:Metal-Poor Stars full text sources ADS | data products SIMBAD (13) Related Materials (2) Part 1: 1978ApJ...222..595P Part 3: 1981ApJ...244..989P
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