The nature of subdwarf B stars

Details The nature of subdwarf B stars The nature of subdwarf B stars

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984msngr..35...29h&link_type=abstract

ESO Messenger (ISSN 0722-6691), March 1984, p. 29-32.

Physics

2

Abundance, B Stars, Horizontal Branch Stars, Stellar Evolution, Subdwarf Stars, Blue Stars, Helium, Iue, O Stars, Stellar Spectra, Stellar Temperature

Scientific paper

A discussion is conducted concerning the characteristics of subdwarf B stars, including the subdwarf OB (sdOB) stars whose temperatures reach up to 40,000 K and above. Attention is given to the question of these stars' degree of He deficiency, which influences their classification as horizontal branch stars. The use of the IUE band for effective temperature determinations, the /g, T(eff)/ diagram, the photospheric He content of such helium main sequence stars as the sdOBs, and metal abundances and evolutionary histories, are considered in turn.

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