BD +03 deg 740 - A new extreme metal-poor dwarf

Details BD +03 deg 740 - A new extreme metal-poor dwarf BD +03 deg 740 - A new extreme metal-poor dwarf

Mar 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987msngr..47...18m&link_type=abstract

ESO Messenger (ISSN 0722-6691), March 1987, v. 47, p. 18,19.

Computer Science

1

Dwarf Stars, Stellar Composition, Stellar Spectrophotometry, Subgiant Stars, Galactic Evolution, Spectrum Analysis, Stellar Evolution

Scientific paper

The results of a preliminary analysis of BD +03 deg 740 are presented. The analysis was based on the blue spectrum which was obtained with an exposure time of 40 min, giving a good S/N ratio for this 9.8-mag star. Graphs are presented which reveal the extreme weakness of the metal lines in the spectrum. The analysis of BD +03 deg 740, which is the most metal-poor dwarf in which s element abundances have been determined, confirms the presence of secondary elements in the atmospheres of the extreme halo dwarfs.

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