A New Photometric Study of Ap and Am Stars in the Infrared | |
Chen PS(陈培生)![]() ![]() ![]() | |
刊名 | ASTRONOMICAL JOURNAL
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2017-05-01 | |
卷号 | 153期号:5页码:218-247 |
关键词 | Infrared: Stars Stars: Peculiar |
ISSN号 | 0004-6256 |
DOI | 10.3847/1538-3881/aa679a |
产权排序 | 第1完成单位 |
文献子类 | Article |
英文摘要 | In this paper, 426 well known confirmed Ap and Am stars are photometrically studied in the infrared. The 2MASS, Wide-field Infrared Survey Explorer (WISE), and IRAS data are employed to make analyses. The results in this paper have shown that in the 1-3 mu m region over 90% Ap and Am stars have no or little infrared excesses, and infrared radiations in the near-infrared from these stars are probably dominated by the free-free emissions. It is also shown that in the 3-12 mu m region, the majority of Ap stars and Am stars have very similar behavior, i.e., in the W1-W2 (3.4-4.6 mu m) region, over half of Ap and Am stars have clear infrared excesses, which are possibly due to the binarity, the multiplicity, and/or the debris disk, but in the W2-W3 (4.6-12 mu m) region they have no or little infrared excess. In addition, in the 12-22 mu m region, some of Ap stars and Am stars show the infrared excesses and infrared radiations for these Ap and Am stars are probably due to the free-free emissions. In addition, it is seen that the probability of being the binarity, the multiplicity and/or the debris disk for Am stars is much higher than that for Ap stars. Furthermore, it can be seen that, in general, no relations can be found between infrared colors and spectral types either for Ap stars or for Am stars. |
学科主题 | 天文学 ; 天体物理学 ; 实测天体物理学 ; 空间天文学 ; 红外天文学 |
URL标识 | 查看原文 |
出版地 | TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND |
资助项目 | National Nature Science Foundation of China[11373067] ; National Nature Science Foundation of China[11303086] |
WOS关键词 | CHEMICALLY PECULIAR STARS ; UPPER MAIN-SEQUENCE ; SPECTROSCOPIC BINARIES ; INTRINSIC COLORS ; CP STARS ; B-STAR ; SYSTEMS ; MULTIPLICITY ; PASSBANDS ; PARAMETERS |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000399746700004 |
资助机构 | National Nature Science Foundation of China[11373067, 11303086] |
内容类型 | 期刊论文 |
源URL | [http://ir.ynao.ac.cn/handle/114a53/10175] ![]() |
专题 | 云南天文台_其他 云南天文台_中国科学院天体结构与演化重点实验室 |
通讯作者 | Chen PS(陈培生) |
作者单位 | Yunnan Observatories and Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China |
推荐引用方式 GB/T 7714 | Chen PS,Liu JY,Dan HG. A New Photometric Study of Ap and Am Stars in the Infrared[J]. ASTRONOMICAL JOURNAL,2017,153(5):218-247. |
APA | Chen PS,Liu JY,&Dan HG.(2017).A New Photometric Study of Ap and Am Stars in the Infrared.ASTRONOMICAL JOURNAL,153(5),218-247. |
MLA | Chen PS,et al."A New Photometric Study of Ap and Am Stars in the Infrared".ASTRONOMICAL JOURNAL 153.5(2017):218-247. |
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