MERGING GALAXIES WITH TIDAL TAILS IN COSMOS TO z?=?1
文献类型：期刊论文
| 作者 | Wen (闻璋正),Zhang Zheng1,2; Zheng (郑宪忠),Xian Zhong1 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2016-11-18 |
| 卷号 | 832期号:1 |
| 关键词 | galaxies: active galaxies: evolution galaxies: interactions galaxies: structure techniques: image processing |
| ISSN号 | 0004-637X |
| DOI | 10.3847/0004-637X/832/1/90 |
| 英文摘要 | ABSTRACT Tidal tails are created in major mergers involving disk galaxies. It remains to be explored how the tidal tails trace the assembly history of massive galaxies. We identify a sample of 461 merging galaxies with long tidal tails, from 35,076 galaxies mass-complete at and , based on Hubble Space Telescope/ACS F814W imaging data and public catalogs of the COSMOS field. The long tails refer to those with length equal to or greater than the diameter of their host galaxies. The mergers with tidal tails are selected using our novel technique for strong asymmetric features, along with visual examination. Our results show that the fraction of tidal-tailed mergers evolves mildly with redshift, as , and becomes relatively higher in less-massive galaxies, out to z?=?1. With a timescale of 0.5 Gyr for the tidal-tailed mergers, we obtain that the occurrence rate of such mergers follows Gyr?1, and corresponds to ～0.3 events since z?=?1,? as well as roughly one-third of the total budget of major mergers from the literature. For disk-involved major mergers, nearly half of them have undergone a phase with long tidal tails. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-832-1-90 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/23750]  |
| 专题 | 中国科学院紫金山天文台 |
| 作者单位 | 1.Purple Mountain Observatory, Chinese Academy of Sciences, 2 West Beijing Road, Nanjing, 210008, China; zzwen@pmo.ac.cn, xzzheng@pmo.ac.cn 2.University of Chinese Academy of Sciences, 19A Yuquan Road Beijing, China |
| 推荐引用方式 GB/T 7714 | Wen ,Zheng . MERGING GALAXIES WITH TIDAL TAILS IN COSMOS TO z?=?1[J]. The Astrophysical Journal,2016,832(1). |
| APA | Wen ,&Zheng .(2016).MERGING GALAXIES WITH TIDAL TAILS IN COSMOS TO z?=?1.The Astrophysical Journal,832(1). |
| MLA | Wen ,et al."MERGING GALAXIES WITH TIDAL TAILS IN COSMOS TO z?=?1".The Astrophysical Journal 832.1(2016). |
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来源：紫金山天文台
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