| A cyclical period variation detected in the updated orbital period analysis of TV Columbae | |
Dai ZB(戴智斌)1,2 ; Qian SB(钱声帮)1,2; Lajus, EF3; Baume, GL3; Dai, ZB (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China.
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| 发表期刊 | ASTROPHYSICS AND SPACE SCIENCE
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| 2010-12 | |
| 卷号 | 330期号:2页码:243-248 |
| DOI | 10.1007/s10509-010-0412-0 |
| 产权排序 | 第1完成单位 |
| 收录类别 | SCI |
| 关键词 | Stars: Cataclysmic Variables Stars: Binaries: Eclipsing Stars: Individual (Tv Columbae) |
| 摘要 | Two CCD photometries of the intermediate polar TV Columbae are made for obtaining two updated eclipse timings with high precision. There is an interval time similar to 17 yr since the last mid-eclipse time observed in 1991. Thus, the new mid-eclipse times might offer an opportunity to check the previous orbital ephemerides. A calculation indicates that the orbital ephemeris derived by Augusteijn et al. (Astron. Astrophys. Suppl. Ser. 107:219, 1994) should be corrected. Based on the proper linear ephemeris (Hellier in Mon. Not. R. Astron. Soc. 264:132, 1993), the new orbital period analysis suggests a cyclical period variation in the O-C diagram of TV Columbae. Using Applegate's mechanism to explain the periodic oscillation in the O-C diagram, the required energy is larger than the energy that a M0-type star can afford over a complete variation period of similar to 31.0(+/- 3.0) yr. Thus, the light travel-time effect indicates that the tertiary component in TV Columbae may be a dwarf with a low mass, which is near the lower mass limit of similar to 0.08M (aS (TM)) as long as the inclination of the third body is high enough. |
| 项目资助者 | Special Foundation of President of The Chinese Academy of Sciences ; West Light Foundation of The Chinese Academy of Sciences ; Yunnan Natural Science Foundation [2008CD157, 2005A0059M] ; Chinese Natural Science Foundation [10573032, 10573013, 10433030] |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0004-640X |
| URL | 查看原文 |
| 归档日期 | 2010-11-11 |
| WOS记录号 | WOS:000283939900007 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | INTERMEDIATE POLAR ; CATACLYSMIC VARIABLES ; SECONDARY STARS ; WHITE-DWARF ; 2A 0526-328 ; PERIODICITIES ; BINARIES ; MASS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/5834 |
| 专题 | 双星与变星研究组 中国科学院天体结构与演化重点实验室 |
| 通讯作者 | Dai, ZB (reprint author), Chinese Acad Sci, Natl Astron Observ, Yunnan Observ, POB 110, Kunming 650011, Peoples R China. |
| 作者单位 | 1.National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, P.O. Box 110, 650011, Kunming, China 2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, P.O. 110, 650011, Kunming, China 3.Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata Paseo del Bosque s/n, 1900, La Plata, Pcia. Bs. As., Argentina |
| 第一作者单位 | 中国科学院云南天文台 |
| 推荐引用方式 GB/T 7714 | Dai ZB,Qian SB,Lajus, EF,et al. A cyclical period variation detected in the updated orbital period analysis of TV Columbae[J]. ASTROPHYSICS AND SPACE SCIENCE,2010,330(2):243-248. |
| APA | Dai ZB,Qian SB,Lajus, EF,Baume, GL,&Dai, ZB .(2010).A cyclical period variation detected in the updated orbital period analysis of TV Columbae.ASTROPHYSICS AND SPACE SCIENCE,330(2),243-248. |
| MLA | Dai ZB,et al."A cyclical period variation detected in the updated orbital period analysis of TV Columbae".ASTROPHYSICS AND SPACE SCIENCE 330.2(2010):243-248. |
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