干旱区生态环境知识资源中心(Arid): Studies of hot B subdwarfs. Part 2: Energy distributions of three bright sdB/sdOB stars in the 950-5500 angstrom range

Arid

报告编号	NASA-CR-175854, NAS 1.26:175854
来源ID	NTRS_Document_ID: 19850019463
	Studies of hot B subdwarfs. Part 2: Energy distributions of three bright sdB/sdOB stars in the 950-5500 angstrom range
	Wesemael, F.; Holberg, J. B.; Veilleux, S.; Lamontagne, R.; Fontaine, G.
英文摘要	Voyager ultraviolet spectrometer observations of the subdwarf B or OB stars HD 205805, UV 1758+36 and Feige 66 are presented. All three objects display the H I Layman series in absorption. These observations are combined with low dispersion IUE spectrophotometry and with Stroemgren photometry to construct virtually complete energy distributions, which extend over the range 950-5500 angstroms. Effective temperatures based on model atmosphere calculations for high gravity, hydrogen rich stars are determined. Our analyses yield T Sub e 28,200 + or - 1300 K for HD 205805, T sub e 31, 800 + or - 1100 K for UV 1758+36, and T sub e 35,700 + or - 1500 K for Feige 66. The importance of far ultraviolet observations below L sub alpha in reducing the uncertainties associated with the interstellar extinction and the degradation of the IUE sensitivity is emphasized.
英文关键词	B STARS ENERGY DISTRIBUTION LYMAN SPECTRA SUBDWARF STARS ULTRAVIOLET SPECTROMETERS IUE SPECTROPHOTOMETRY STELLAR ATMOSPHERES STELLAR TEMPERATURE VOYAGER PROJECT
出版年	1985
报告类型	Technical Report
语种	英语
国家	美国
URL	http://hdl.handle.net/2060/19850019463
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/259022
推荐引用方式 GB/T 7714	Wesemael, F.,Holberg, J. B.,Veilleux, S.,et al. Studies of hot B subdwarfs. Part 2: Energy distributions of three bright sdB/sdOB stars in the 950-5500 angstrom range,1985.