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Record Details

Record 60 of 31020
High resolution spectroscopy of six new extreme helium stars
Author and Affiliation:
Heber, U.(Kiel Univ., Germany)
Jones, G.(Kiel, Universitaet, Institut fuer theoretische Physik und Sternwarte, Germany)
Drilling, J. S.(Louisiana State University, Baton Rouge, United States)
Abstract: High resolution spectra of six newly discovered extreme helium stars are presented. LSS 5121 is shown to be a spectroscopical twin of the hot extreme helium star HD 160641. A preliminary LTE analysis of LSS 3184 yielded an effective temperature of 22,000 K and a surface gravity of log g = 3.2. Four stars form a new subgroup, classified by sharp-lined He I spectra and pronounced O II spectra, and it is conjectured that these lie close to the Eddington limit. The whole group of extreme helium stars apparently is inhomogeneous with respect to luminosity to mass ratio and chemical composition.
Publication Date: Jan 01, 1986
Document ID:
19870050182
(Acquired Nov 28, 1995)
Accession Number: 87A37456
Subject Category: ASTROPHYSICS
Document Type: Conference Paper
Publication Information: SEE A87-37451
Publisher Information: Netherlands
Contract/Grant/Task Num: NSF AST-80-18766; NSF AST-85-14574; NSF INT-82-19240; NAG5-71
Financial Sponsor: NASA; United States
Organization Source: Kiel Univ.; Baton Rouge, LA, United States
Louisiana State Univ.
Description: 6p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: B STARS; HELIUM; SPECTRAL RESOLUTION; STELLAR COMPOSITION; STELLAR SPECTRA; BINARY STARS; HOT STARS; LINE SPECTRA; MASS TO LIGHT RATIOS
Imprint And Other Notes: IN: Hydrogen deficient stars and related objects; Proceedings of the Eighty-seventh IAU Colloquium, Mysore, India, Nov. 10-15, 1985 (A87-37451 16-90). Dordrecht, D. Reidel Publishing Co., 1986, p. 67-72.
Availability Source: Other Sources
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