A search for stars of very low metal abundance. II

Abstract

view Abstract Citations (522) References (54) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS A Search for Stars of Very Low Metal Abundance. II Beers, Timothy C. ; Preston, George W. ; Shectman, Stephen A. Abstract Spectroscopic observations for 1044 stars located primarily in the southern Galactic hemisphere are reported; the stars were chosen from a list of candidate metal-deficient stars discovered in the HK objective-prism survey. Radial velocities and line indices based on the equivalent widths of Ca II, K, H-gamma and H-delta, and the CH G band are reported. Estimates of metallicity for 874 stars with derived abundances less than -0.5 are presented. The number of extremely metal-poor stars (Fe/H is not greater than -2.0) reported in the present sample is roughly quadruple the same size of nonkinematically selected stars of similar metal abundance reported in previous work, and is on the order of the total previous samples of stars in this abundance regime when all sources are included. The number of stars with Fe/H not greater than -3.0 in the present sample is seven times the number of previously identified stars with spectroscopically determined abundances which are this low. Publication: The Astronomical Journal Pub Date: June 1992 DOI: 10.1086/116207 Bibcode: 1992AJ....103.1987B Keywords: Metallicity; Stellar Composition; Stellar Spectrophotometry; Abundance; Color-Color Diagram; Spectral Line Width; Star Formation; Stellar Magnitude; Ubv Spectra; Astrophysics; STARS: ABUNDANCES full text sources ADS | data products SIMBAD (1024) GCPD (1) CDS (1) Related Materials (5) Part 1: 1985AJ.....90.2089B Part 3: 1999ApJS..123..639N Part 4: 2000AJ....119.2882A Part 5: 2000AJ....120.2065B Part 6: 2014AJ....147..136R