Dust and gas content of high-redshift galaxies hosting obscured AGN in the Chandra Deep Field-South
文献类型：期刊论文
| 作者 | D'Amato, Q.2,3; Gilli, R.4; Vignali, C.3,4; Massardi, M.5; Pozzi, F.3; Zamorani, G.4; Circosta, C.6; Vito, F.7,8,9; Fritz, J.10; Cresci, G.11 |
| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 2020-04-13 |
| 卷号 | 636页码:15 |
| 关键词 | galaxies: active galaxies: evolution galaxies: high-redshift submillimeter: galaxies ISM: structure ISM: kinematics and dynamics |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/201936175 |
| 英文摘要 | Context. Obscured active galactic nuclei (AGN) represent a significant fraction of the entire AGN population, especially at high redshift (similar to 70% at z=3-5). They are often characterized by the presence of large gas and dust reservoirs that are thought to sustain and possibly obscure vigorous star formation processes that make these objects shine at FIR and submillimeter wavelengths. Studying the physical properties of obscured AGN and their host galaxies is crucial to shedding light on the early stages of a massive system lifetime.Aims. We aim to investigate the contribution of the interstellar medium (ISM) to the obscuration of quasars in a sample of distant highly star forming galaxies and to unveil their morphological and kinematics properties.Methods. We exploit Atacama Large Millimeter/submillimeter Array Cycle 4 observations of the continuum (similar to 2.1 mm) and high-J CO emission of a sample of six X-ray selected, FIR detected galaxies hosting an obscured AGN at z(spec)> 2.5 in the 7 Ms Chandra Deep Field-South. We measured the masses and sizes of the dust and molecular gas by fitting the images, visibilities, and spectra, and we derived the gas density and column density on the basis of a uniform sphere geometry. Finally, we compared the measured column densities with those derived from the Chandra X-ray spectra.Results. We detected both the continuum and line emission for three sources for which we measured both the flux density and size. For the undetected sources, we derived an upper limit on the flux density from the root mean square of the images. We found that the detected galaxies are rich in gas and dust (molecular gas mass in the range < 0.5-2.7x10(10) M- |
| WOS关键词 | STAR-FORMATION ; MOLECULAR GAS ; SUBMILLIMETER GALAXIES ; LUMINOSITY FUNCTION ; INFRARED-EMISSION ; CO EXCITATION ; EVOLUTION ; STELLAR ; Z-SIMILAR-TO-2 ; DISTRIBUTIONS |
| 资助项目 | IMPRS on Astrophysics at the LMU (Munich) ; CONICYT through the Fourth call for tenders of the CAS-CONICYT ; CASSACA through the Fourth call for tenders of the CAS-CONICYT Fund ; CONICYT[Basal-CATA AFB-170002] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000526887900002 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | IMPRS on Astrophysics at the LMU (Munich) ; IMPRS on Astrophysics at the LMU (Munich) ; CONICYT through the Fourth call for tenders of the CAS-CONICYT ; CONICYT through the Fourth call for tenders of the CAS-CONICYT ; CASSACA through the Fourth call for tenders of the CAS-CONICYT Fund ; CASSACA through the Fourth call for tenders of the CAS-CONICYT Fund ; CONICYT ; CONICYT ; IMPRS on Astrophysics at the LMU (Munich) ; IMPRS on Astrophysics at the LMU (Munich) ; CONICYT through the Fourth call for tenders of the CAS-CONICYT ; CONICYT through the Fourth call for tenders of the CAS-CONICYT ; CASSACA through the Fourth call for tenders of the CAS-CONICYT Fund ; CASSACA through the Fourth call for tenders of the CAS-CONICYT Fund ; CONICYT ; CONICYT ; IMPRS on Astrophysics at the LMU (Munich) ; IMPRS on Astrophysics at the LMU (Munich) ; CONICYT through the Fourth call for tenders of the CAS-CONICYT ; CONICYT through the Fourth call for tenders of the CAS-CONICYT ; CASSACA through the Fourth call for tenders of the CAS-CONICYT Fund ; CASSACA through the Fourth call for tenders of the CAS-CONICYT Fund ; CONICYT ; CONICYT ; IMPRS on Astrophysics at the LMU (Munich) ; IMPRS on Astrophysics at the LMU (Munich) ; CONICYT through the Fourth call for tenders of the CAS-CONICYT ; CONICYT through the Fourth call for tenders of the CAS-CONICYT ; CASSACA through the Fourth call for tenders of the CAS-CONICYT Fund ; CASSACA through the Fourth call for tenders of the CAS-CONICYT Fund ; CONICYT ; CONICYT |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/55761]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | D'Amato, Q. |
| 作者单位 | 1.Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA 2.Ist Radioastron, INAF IRA, Via Piero Gobetti 101, I-40129 Bologna, Italy 3.Univ Bologna, Dipartimento Fis & Astron, Via P Gobetti 93-2, I-40129 Bologna, Italy 4.Osservatorio Astrofis & Sci Spazio Bologna, INAF OAS, Via P Gobetti 93-3, I-40129 Bologna, Italy 5.Italian Alma Reg Ctr ARC, Ist Radioastron, INAF, Via Piero Gobetti 101, I-40129 Bologna, Italy 6.European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany 7.Pontificia Univ Catolica Chile, Inst Astrofis, Casilla 306, Santiago 22, Chile 8.Pontificia Univ Catolica Chile, Ctr Astroingn, Casilla 306, Santiago 22, Chile 9.Chinese Acad Sci, South Amer Ctr Astron, Natl Astron Observ, Beijing 100012, Peoples R China 10.UNAM, Inst Radioastron & Astrofis, Campus Morelia,AP 3-72, Morelia 58089, Michoacan, Mexico |
| 推荐引用方式 GB/T 7714 | D'Amato, Q.,Gilli, R.,Vignali, C.,et al. Dust and gas content of high-redshift galaxies hosting obscured AGN in the Chandra Deep Field-South[J]. ASTRONOMY & ASTROPHYSICS,2020,636:15. |
| APA | D'Amato, Q..,Gilli, R..,Vignali, C..,Massardi, M..,Pozzi, F..,...&Norman, C..(2020).Dust and gas content of high-redshift galaxies hosting obscured AGN in the Chandra Deep Field-South.ASTRONOMY & ASTROPHYSICS,636,15. |
| MLA | D'Amato, Q.,et al."Dust and gas content of high-redshift galaxies hosting obscured AGN in the Chandra Deep Field-South".ASTRONOMY & ASTROPHYSICS 636(2020):15. |
入库方式： OAI收割
来源：国家天文台
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