THE MOST LUMINOUS HEAVILY OBSCURED QUASARS HAVE A HIGH MERGER FRACTION: MORPHOLOGICAL STUDY OF WISE-SELECTED HOT DUST-OBSCURED GALAXIES
文献类型：期刊论文
| 作者 | Fan, Lulu1; Han YK(韩云坤)2 ; Fang, Guanwen3; Gao, Ying1; Zhang, Dandan1; Jiang, Xiaoming1; Wu, Qiaoqian1; Yang, Jun1; Li, Zhao1
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| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
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| 出版日期 | 2016-05-10 |
| 卷号 | 822期号:2 |
| ISSN号 | 2041-8205 |
| 关键词 | galaxies: active galaxies: evolution galaxies: high-redshift galaxies: interactions |
| 通讯作者 | Fan, LL ; Han, YK |
| 产权排序 | 第二完成单位 |
| 英文摘要 | Previous studies have shown that Wide-field Infrared Survey Explorer-selected hyperluminous, hot dust-obscured galaxies (Hot DOGs) are powered by highly dust-obscured, possibly Compton-thick active galactic nuclei (AGNs). High obscuration provides us a good chance to study the host morphology of the most luminous AGNs directly. We analyze the host morphology of 18 Hot DOGs at z similar to 3 using Hubble Space Telescope/WFC3 imaging. We find that Hot DOGs have a high merger fraction (62 +/- 14%). By fitting the surface brightness profiles, we find that the distribution of Sersic indices in our Hot DOG sample peaks around 2, which suggests that most Hot DOGs have transforming morphologies. We also derive the AGN bolometric luminosity (similar to 10(14) L-circle dot) of our Hot DOG sample by using IR spectral energy distributions decomposition. The derived merger fraction and AGN bolometric luminosity relation is well consistent with the variability-based model prediction. Both the high merger fraction in an IR-luminous AGN sample and relatively low merger fraction in a UV/optical-selected, unobscured AGN sample can be expected in the merger-driven evolutionary model. Finally, we conclude that Hot DOGs are merger-driven and may represent a transit phase during the evolution of massive galaxies, transforming from the dusty starburst-dominated phase to the unobscured QSO phase. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | SUPERMASSIVE BLACK-HOLES ; SIMILAR-TO 2 ; ACTIVE GALACTIC NUCLEUS ; HOST GALAXIES ; STAR-FORMATION ; MAJOR MERGERS ; FOLLOW-UP ; AGN ; CANDELS ; CONNECTION |
| 收录类别 | SCI |
| 原文出处 | http://iopscience.iop.org/article/10.3847/2041-8205/822/2/L32/meta |
| 语种 | 英语 |
| WOS记录号 | WOS:000376173300012 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/9600]  |
| 专题 | 云南天文台_大样本恒星演化研究组 |
| 作者单位 | 1.Shandong Provincial Key Lab of Optical Astronomy and Solar-Terrestrial Environment, Institute of Space Science, Shandong University, Weihai 264209, China 2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650011, China 3.Institute for Astronomy and History of Science and Technology, Dali University, Dali 671003, China |
| 推荐引用方式 GB/T 7714 | Fan, Lulu,Han YK,Fang, Guanwen,et al. THE MOST LUMINOUS HEAVILY OBSCURED QUASARS HAVE A HIGH MERGER FRACTION: MORPHOLOGICAL STUDY OF WISE-SELECTED HOT DUST-OBSCURED GALAXIES[J]. ASTROPHYSICAL JOURNAL LETTERS,2016,822(2). |
| APA | Fan, Lulu.,Han YK.,Fang, Guanwen.,Gao, Ying.,Zhang, Dandan.,...&Li, Zhao.(2016).THE MOST LUMINOUS HEAVILY OBSCURED QUASARS HAVE A HIGH MERGER FRACTION: MORPHOLOGICAL STUDY OF WISE-SELECTED HOT DUST-OBSCURED GALAXIES.ASTROPHYSICAL JOURNAL LETTERS,822(2). |
| MLA | Fan, Lulu,et al."THE MOST LUMINOUS HEAVILY OBSCURED QUASARS HAVE A HIGH MERGER FRACTION: MORPHOLOGICAL STUDY OF WISE-SELECTED HOT DUST-OBSCURED GALAXIES".ASTROPHYSICAL JOURNAL LETTERS 822.2(2016). |
入库方式： OAI收割
来源：云南天文台
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