Photometric investigations on two totally eclipsing contact binaries:V342 UMa and V509 Cam
文献类型：期刊论文
| 作者 | Kai Li2; QiQi Xia2; JinZhong Liu4 ; Yu Zhang4; Xing Gao4; ShaoMing Hu2; DiFu Guo2; Xu Chen2; Yuan Liu1
|
| 刊名 | 天文和天体物理学研究：英文版
 |
| 出版日期 | 2019 |
| 卷号 | 19.0期号:010页码:75-86 |
| 关键词 | stars binaries close-stars eclipsing-stars individual (V342UMa, V509Cam) |
| ISSN号 | 1674-4527 |
| 英文摘要 | By analyzing two sets of complete BV Rc Ic light curves for V342 UMa and three sets of complete BV Rc Ic light curves for V509 Cam, we determined that the two systems are both W-subtype contact binaries and that V342 UMa manifests a shallow contact configuration, while V509 Cam exhibits a medium contact configuration. Given that both of them are totally eclipsing binaries, the physical parameters derived only by the photometric light curves are reliable. Meanwhile, the period changes of the two targets were analyzed based on all available eclipsing times. We discovered that V342 UMa shows long-term period decrease with a rate of-1.02(±0.54)× 10^-7 d yr^-1 and that V509 Cam displays long-term period increase with a rate of 3.96(±0.90)× 10^-8 d yr^-1. Both the conservative mass transfer and angular momentum loss via magnetic stellar winds can be used to interpret the long-term period decrease of V342 UMa. The longterm period increase of V509 Cam can be explained by mass transfer from the less massive star to the more massive one. The absolute parameters of the two binaries were estimated according to their Gaia distances and our derived photometric solution results. This method can be extended to other contact binaries without radial velocities but with reliable photometric solutions. Their evolutionary states were investigated and we found that they reveal properties that are identical to other W-subtype contact systems. |
| 语种 | 英语 |
| CSCD记录号 | CSCD:6600378 |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/6493]  |
| 专题 | 研究单元未命名 |
| 作者单位 | 1.齐鲁理工学院 2.山东大学 3.中国科学院 4.中国科学院新疆天文台 |
| 推荐引用方式 GB/T 7714 | Kai Li,QiQi Xia,JinZhong Liu,et al. Photometric investigations on two totally eclipsing contact binaries:V342 UMa and V509 Cam[J]. 天文和天体物理学研究：英文版,2019,19.0(010):75-86. |
| APA | Kai Li.,QiQi Xia.,JinZhong Liu.,Yu Zhang.,Xing Gao.,...&Yuan Liu.(2019).Photometric investigations on two totally eclipsing contact binaries:V342 UMa and V509 Cam.天文和天体物理学研究：英文版,19.0(010),75-86. |
| MLA | Kai Li,et al."Photometric investigations on two totally eclipsing contact binaries:V342 UMa and V509 Cam".天文和天体物理学研究：英文版 19.0.010(2019):75-86. |
入库方式： OAI收割
来源：新疆天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。