弱氦星
弱氦星是化學性質奇特的恆星,它們的光譜在光譜類型有微弱的氦線[1][2]。它們的氦線顯示是在晚期較低的溫度,比氫線顯示的低[3]。
弱氦星列表
- HR 939
- HR 1100
- HR 1121
- HR 1441
- HR 2509
- HR 3448
- HR 4801
- HR 8137
- 水蛇座θ
- HD 34797
- HD 35456
相關條目
參考資料
- ^ Landstreet, J. D.; Bohlender, David A. Abundance and Magnetic Field Geometries of Helium-Strong and Helium-Weak Stars. Symposium - International Astronomical Union. 1988, 132: 309–312. ISSN 0074-1809. doi:10.1017/S0074180900035191 (英语).
- ^ Preston, George W. The Chemically Peculiar Stars of the Upper Main Sequence. Annual Review of Astronomy and Astrophysics. 1974, 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. [2019-05-31]. (原始内容存档于2020-08-01).
- ^ Jaschek, Mercedes; Jaschek, Carlos; Arnal, Marcelo. Helium-Weak Stars. Publications of the Astronomical Society of the Pacific. October 1969, 81 (482): 651. Bibcode:1969PASP...81..650J. doi:10.1086/128832 .
- ^ Alonso, M. S.; López-García, Z.; Malaroda, S.; Leone, F. Elemental abundance studies of CP stars. The helium-weak stars HD 19400, HD 34797 and HD 35456*. Astronomy and Astrophysics. April 2003, 402: 331. Bibcode:2003A&A...402..331A. doi:10.1051/0004-6361:20030222 .
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