DISTRIBUTION OF QUASAR HOSTS ON THE GALAXY MAIN SEQUENCE PLANE
文献类型：期刊论文
| 作者 | Zhang, Zhoujian1,2,8; Shi, Yong1,2,3; Rieke, George H.4,5; Xia, Xiaoyang6; Wang, Yikang1,2; Sun, Bingqing7; Wan, Linfeng1,2 |
| 刊名 | ASTROPHYSICAL JOURNAL LETTERS
 |
| 出版日期 | 2016-03-10 |
| 卷号 | 819期号:2 |
| 关键词 | galaxies: active galaxies: starburst infrared: galaxies |
| 英文摘要 | The relation between star formation rates (SFRs) and stellar masses, i.e., the galaxy main sequence, is a useful diagnostic of galaxy evolution. We present the distributions relative to the main sequence of 55 optically selected PG and 12 near-IR-selected Two Micron All Sky Survey (2MASS) quasars at z <= 0.5. We estimate the quasar host stellar masses from Hubble Space Telescope or ground-based AO photometry, and the SFRs through the mid-infrared aromatic features and far-IR photometry. We find that PG quasar hosts more or less follow the main sequence defined by normal star-forming galaxies while 2MASS quasar hosts lie systematically above the main sequence. PG and 2MASS quasars with higher nuclear luminosities seem to have higher specific SFRs (sSFRs), although there is a large scatter. No trends are seen between sSFRs and SMBH masses, Eddington ratios, or even morphology types (ellipticals, spirals, and mergers). Our results could be placed in an evolutionary scenario with quasars emerging during the transition from ULIRGs/mergers to ellipticals. However, combined with results at higher redshift, they suggest that quasars can be widely triggered in normal galaxies as long as they contain abundant gas and have ongoing star formation. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000371788300011 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5398]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China 2.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Jiangsu, Peoples R China 3.Collaborat Innovat Ctr Modern Astron & Space Expl, Nanjing 210093, Jiangsu, Peoples R China 4.Univ Arizona, Dept Astron, 933 N Cherry Ave, Tucson, AZ 85721 USA 5.Univ Arizona, Steward Observ, 933 N Cherry Ave, Tucson, AZ 85721 USA 6.Tianjin Normal Univ, Tianjin Astrophys Ctr, Tianjin 300387, Peoples R China 7.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 8.Univ Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA |
| 推荐引用方式 GB/T 7714 | Zhang, Zhoujian,Shi, Yong,Rieke, George H.,et al. DISTRIBUTION OF QUASAR HOSTS ON THE GALAXY MAIN SEQUENCE PLANE[J]. ASTROPHYSICAL JOURNAL LETTERS,2016,819(2). |
| APA | Zhang, Zhoujian.,Shi, Yong.,Rieke, George H..,Xia, Xiaoyang.,Wang, Yikang.,...&Wan, Linfeng.(2016).DISTRIBUTION OF QUASAR HOSTS ON THE GALAXY MAIN SEQUENCE PLANE.ASTROPHYSICAL JOURNAL LETTERS,819(2). |
| MLA | Zhang, Zhoujian,et al."DISTRIBUTION OF QUASAR HOSTS ON THE GALAXY MAIN SEQUENCE PLANE".ASTROPHYSICAL JOURNAL LETTERS 819.2(2016). |
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来源：国家天文台
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