A Complete 16 μm Selected Galaxy Sample at z ～ 1: Mid-infrared Spectral Energy Distributions
文献类型：期刊论文
| 作者 | Huang,J.-S.8,13; Dai,Y.-S.8; Willner,S. P.12; Faber,S. M.11; Cheng,C.8; Xu,H.8; Yan,H.10; Wu,S.8; Shao,X.8; Hao,C.9 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2021-05-01 |
| 卷号 | 912期号:2 |
| 关键词 | Infrared galaxies Luminous infrared galaxies Sky surveys Spectral energy distribution |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/abec50 |
| 英文摘要 | Abstract We describe a complete, flux-density-limited sample of galaxies at redshift 0.8 < z < 1.3 selected at 16 μm. At the selection wavelength near 8 μm rest, the observed emission comes from both dust heated by intense star formation and active galactic nuclei (AGNs). Fitting the spectral energy distributions (SEDs) of the sample galaxies to local-galaxy templates reveals that more than half the galaxies have SEDs dominated by star formation. About one-sixth of the galaxy SEDs are dominated by an AGN, and nearly all of the rest of the SEDs are composite. Comparison with X-ray and far-infrared observations shows that combinations of luminosities at rest-frame 4.5 and 8 μm give good measures of both AGN luminosity and star formation rate. The sample galaxies mostly follow the established star-forming main sequence for z = 1 galaxies, but of the galaxies more than 0.5 dex above that main sequence, more than half have AGN-type SEDs. Similarly, the most luminous AGNs tend to have higher star formation rates than the main-sequence value. Galaxies with stellar masses >1011 M⊙ are unlikely to host an AGN. About 1% of the sample galaxies show an SED with dust emission typical of neither star formation nor an AGN. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-912-2-abec50 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/56913]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Willner,S. P. |
| 作者单位 | 1.Department of Astronomy, University of Concepcion, Concepcion, Chile 2.School of Astronomy and Space Sciences, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China 3.CAS Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei 230026, People’s Republic of China 4.University of Copenhagen, Lyngbyvej 2, DK-2100 Copenhagen ?, Denmark 5.Department of Astrophysics, Oxford University, Keble Road, Oxford, OX1 3RH, UK 6.DTU-Space, Technical University of Denmark, Elektrovej 327, DK-2800 Kgs. Lyngby, Denmark 7.Centro de Astrobiología (CSIC-INTA), Ctra. de Ajalvir, km 4, E-28850, Torrejón de Ardoz, Madrid, Spain 8.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People’s Republic of China 9.Tianjin Astrophysics Center, Tianjin Normal University, Tianjin 300387, People’s Republic of China 10.Department of Physics and Astronomy, University of Missouri-Columbia, MO, USA |
| 推荐引用方式 GB/T 7714 | Huang,J.-S.,Dai,Y.-S.,Willner,S. P.,等. A Complete 16 μm Selected Galaxy Sample at z ～ 1: Mid-infrared Spectral Energy Distributions[J]. The Astrophysical Journal,2021,912(2). |
| APA | Huang,J.-S..,Dai,Y.-S..,Willner,S. P..,Faber,S. M..,Cheng,C..,...&Esamdin,A..(2021).A Complete 16 μm Selected Galaxy Sample at z ～ 1: Mid-infrared Spectral Energy Distributions.The Astrophysical Journal,912(2). |
| MLA | Huang,J.-S.,et al."A Complete 16 μm Selected Galaxy Sample at z ～ 1: Mid-infrared Spectral Energy Distributions".The Astrophysical Journal 912.2(2021). |
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来源：国家天文台
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