The spot activity of BH Virginis
In this paper, photoelectric light curves of BH Vir in 4650 and 5500 Å bands observed by Kitamura et al. (1957) [PASJg, 191] were analyzed by using the 1992 version Wilson–Devinney program to investigate spot activity. The results show that: (1) There is a large cool spotted active region on the sec...
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| Published in: | New astronomy Vol. 9; no. 1; pp. 27 - 31 |
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| Main Authors: | , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Elsevier B.V
2004
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | In this paper, photoelectric light curves of BH Vir in 4650 and 5500 Å bands observed by
Kitamura et al. (1957) [PASJg, 191] were analyzed by using the 1992 version Wilson–Devinney program to investigate spot activity. The results show that: (1) There is a large cool spotted active region on the secondary star in 1953–1954. (2) Around phase 0.65 the distortion waves of two color light curves can be fitted satisfactorily with two different spot models, a cool spot in 5500 Å band, while a hot spot in 4650 Å band. (3) The mass ratio obtained from the photoelectric light curves is
q=
m
2/
m
1=0.967. It is close to the spectroscopic value of 0.968 obtained by
Zhai et al. (1990). [A&A 237, 148]. (4) The photosphere temperature of the primary is
T
1=6052±8 K. |
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| Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
| ISSN: | 1384-1076 1384-1092 |
| DOI: | 10.1016/j.newast.2003.07.001 |