Helium-weak star

Helium-weak stars are chemically peculiar stars which have a weak helium lines for their spectral type.^[1]^[2] Their helium lines place them in a later (ie. cooler) spectral type then their hydrogen lines.^[3]

List of helium-weak stars[]

This list is incomplete; you can help by . (June 2019)

This is a non-extensive list of helium-weak stars.^[4]^[5]

HR 939
HR 1100
HR 1121
HR 1441
HR 2509
HR 3448
HR 4801
HR 8137
Theta Hydri
HD 34797
HD 35456

References[]

^ Landstreet, J. D.; Bohlender, David A. (1988). "Abundance and Magnetic Field Geometries of Helium-Strong and Helium-Weak Stars". Symposium - International Astronomical Union. 132: 309–312. doi:10.1017/S0074180900035191. ISSN 0074-1809.
^ Preston, George W. (1974). "The Chemically Peculiar Stars of the Upper Main Sequence". Annual Review of Astronomy and Astrophysics. 12 (1): 257–277. Bibcode:1974ARA&A..12..257P. doi:10.1146/annurev.aa.12.090174.001353.
^ "A Digital Spectral Classification Atlas - R. O. Gray". ned.ipac.caltech.edu. Retrieved 2019-05-31.
^ Jaschek, Mercedes; Jaschek, Carlos; Arnal, Marcelo (October 1969). "Helium-Weak Stars". Publications of the Astronomical Society of the Pacific. 81 (482): 651. Bibcode:1969PASP...81..650J. doi:10.1086/128832.
^ Alonso, M. S.; López-García, Z.; Malaroda, S.; Leone, F. (April 2003). "Elemental abundance studies of CP stars. The helium-weak stars HD 19400, HD 34797 and HD 35456*". Astronomy and Astrophysics. 402: 331. Bibcode:2003A&A...402..331A. doi:10.1051/0004-6361:20030222.

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Helium-weak star

List of helium-weak stars[]

See also[]

References[]