Heavy X-ray obscuration in the most luminous galaxies discovered by WISE
文献类型：期刊论文
| 作者 | Vito, F.2,3; Brandt, W. N.2,3,4; Stern, D.5; Assef, R. J.6; Chen, C. -T. J.2,3; Brightman, M.7; Comastri, A.8; Eisenhardt, P.5; Garmire, G. P.9; Hickox, R.10 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2018-03-01 |
| 卷号 | 474期号:4页码:4528-4540 |
| 关键词 | galaxies: active galaxies: evolution galaxies: nuclei quasars: general X-rays: galaxies |
| ISSN号 | 0035-8711 |
| DOI | 10.1093/mnras/stx3120 |
| 英文摘要 | Hot dust-obscured galaxies (DOGs) are hyperluminous (L8-1000 mu m > 10(13) L-circle dot) infrared galaxies with extremely high (up to hundreds of K) dust temperatures. The sources powering both their extremely high luminosities and dust temperatures are thought to be deeply buried and rapidly accreting supermassive black holes (SMBHs). Hot DOGs could therefore represent a key evolutionary phase in which the SMBH growth peaks. X-ray observations can be used to study their obscuration levels and luminosities. In this work, we present the X-ray properties of the 20 most luminous (L-bol greater than or similar to 10(14) L-circle dot) known hot DOGs at z = 2-4.6. Five of them are covered by long-exposure (10-70 ks) Chandra and XMM-Newton observations, with three being X-ray detected, and we study their individual properties. One of these sources (W0116-0505) is a Compton-thick candidate, with column density N-H = (1.0-1.5) x 1024 cm(-2) derived from X-ray spectral fitting. The remaining 15 hot DOGs have been targeted by a Chandra snapshot (3.1 ks) survey. None of these 15 are individually detected; therefore, we applied a stacking analysis to investigate their average emission. From hardness ratio analysis, we constrained the average obscuring column density and intrinsic luminosity to be log N-H (cm(-2)) > 23.5 and L-X greater than or similar to 10(44) erg s(-1), which are consistent with results for individually detected sources. We also investigated the L-X-L-6 (mu m) and L-X-L-bol relations, finding hints that hot DOGs are typically X-ray weaker than expected, although larger samples of luminous obscured quasi-stellar objects are needed to derive solid conclusions. |
| WOS关键词 | ACTIVE GALACTIC NUCLEI ; SUPERMASSIVE BLACK-HOLES ; DUST-OBSCURED GALAXIES ; EXTREMELY RED QUASARS ; INFRARED-SPECTRA ; TYPE-1 QUASARS ; COSMOS FIELD ; AGN ; LUMINOSITIES ; TORI |
| 资助项目 | Penn State ACIS Instrument Team[SV4-74018] ; NASA[NAS8-03060] ; NASA[13-ADAP13-0092] ; V.M. Willaman Endowment ; FONDECYT[1151408] ; Chandra X-ray Center[17700696] ; STFC ; MSTC[2016YFA0400702] ; Smithsonian Astrophysical Observatory[SV2-82024] ; National Aeronautics and Space Administration ; ESA ; NASA |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000424977800020 |
| 出版者 | OXFORD UNIV PRESS |
| 资助机构 | Penn State ACIS Instrument Team ; Penn State ACIS Instrument Team ; NASA ; NASA ; V.M. Willaman Endowment ; V.M. Willaman Endowment ; FONDECYT ; FONDECYT ; Chandra X-ray Center ; Chandra X-ray Center ; STFC ; STFC ; MSTC ; MSTC ; Smithsonian Astrophysical Observatory ; Smithsonian Astrophysical Observatory ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; ESA ; ESA ; NASA ; NASA ; Penn State ACIS Instrument Team ; Penn State ACIS Instrument Team ; NASA ; NASA ; V.M. Willaman Endowment ; V.M. Willaman Endowment ; FONDECYT ; FONDECYT ; Chandra X-ray Center ; Chandra X-ray Center ; STFC ; STFC ; MSTC ; MSTC ; Smithsonian Astrophysical Observatory ; Smithsonian Astrophysical Observatory ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; ESA ; ESA ; NASA ; NASA ; Penn State ACIS Instrument Team ; Penn State ACIS Instrument Team ; NASA ; NASA ; V.M. Willaman Endowment ; V.M. Willaman Endowment ; FONDECYT ; FONDECYT ; Chandra X-ray Center ; Chandra X-ray Center ; STFC ; STFC ; MSTC ; MSTC ; Smithsonian Astrophysical Observatory ; Smithsonian Astrophysical Observatory ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; ESA ; ESA ; NASA ; NASA ; Penn State ACIS Instrument Team ; Penn State ACIS Instrument Team ; NASA ; NASA ; V.M. Willaman Endowment ; V.M. Willaman Endowment ; FONDECYT ; FONDECYT ; Chandra X-ray Center ; Chandra X-ray Center ; STFC ; STFC ; MSTC ; MSTC ; Smithsonian Astrophysical Observatory ; Smithsonian Astrophysical Observatory ; National Aeronautics and Space Administration ; National Aeronautics and Space Administration ; ESA ; ESA ; NASA ; NASA |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/37225]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Vito, F. |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China 2.Penn State Univ, Dept Astron & Astrophys, 525 Davey Lab, University Pk, PA 16802 USA 3.Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA 4.Penn State Univ, Dept Phys, 104 Davey Lab, University Pk, PA 16802 USA 5.CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA 6.Univ Diego Portales, Fac Ingn & Ciencias, Nucleo Astron, Av Ejercito Libertador 441, Santiago, Chile 7.CALTECH, Cahill Ctr Astrophys, 1216 East Calif Blvd, Pasadena, CA 91125 USA 8.INAF Osservatorio Astron Bologna, Via Gobetti 93-3, I-40129 Bologna, Italy 9.Huntingdon Inst Xray Astron LLC, 10677 Franks Rd, Huntingdon, PA 16652 USA 10.Dartmouth Coll, Dept Phys & Astron, Hanover, NH 03755 USA |
| 推荐引用方式 GB/T 7714 | Vito, F.,Brandt, W. N.,Stern, D.,et al. Heavy X-ray obscuration in the most luminous galaxies discovered by WISE[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2018,474(4):4528-4540. |
| APA | Vito, F..,Brandt, W. N..,Stern, D..,Assef, R. J..,Chen, C. -T. J..,...&Wu, J. W..(2018).Heavy X-ray obscuration in the most luminous galaxies discovered by WISE.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,474(4),4528-4540. |
| MLA | Vito, F.,et al."Heavy X-ray obscuration in the most luminous galaxies discovered by WISE".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 474.4(2018):4528-4540. |
入库方式： OAI收割
来源：国家天文台
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