Star Formation and ISM Properties in the Host Galaxies of Three Far-infrared Luminous Quasars at z ∼ 6

被引：38

作者：

Shao, Yali ^{[1
,2
]}

Wang, Ran ^{[2
]}

Carilli, Chris L. ^{[3
,4
]}

Wagg, Jeff ^{[5
]}

Walter, Fabian ^{[4
,6
,7
]}

Li, Jianan ^{[1
,2
]}

Fan, Xiaohui ^{[8
]}

Jiang, Linhua ^{[2
]}

Riechers, Dominik A. ^{[9
]}

Bertoldi, Frank ^{[10
]}

Strauss, Michael A. ^{[11
]}

Cox, Pierre ^{[12
]}

Omont, Alain ^{[12
]}

Menten, Karl M. ^{[13
]}

机构：

[1] Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China

[2] Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China

[3] Cavendish Lab, 19 JJ Thomson Ave, Cambridge, England

[4] Natl Radio Astron Observ, Socorro, NM 87801 USA

[5] SKA Org, Lower Withington Maccles SK11 9DL, Cheshire, England

[6] Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany

[7] CALTECH, Astron Dept, MC105-24, Pasadena, CA 91125 USA

[8] Univ Arizona, Steward Observ, 933 North Cherry Ave, Tucson, AZ 85721 USA

[9] Cornell Univ, Dept Astron, 220 Space Sci Bldg, Ithaca, NY 14853 USA

[10] Univ Bonn, Argelander Inst Astron, Hugel 71, D-53121 Bonn, Germany

[11] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA

[12] Sorbonne Univ, Inst Astrophys Paris, CNRS, UMR 7095, 98 Bis Bd Arago, F-75014 Paris, France

[13] Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany

来源：

ASTROPHYSICAL JOURNAL | 2019年 / 876卷 / 02期

基金：

美国国家科学基金会; 国家重点研发计划;

关键词：

galaxies: active; galaxies: evolution; galaxies: high-redshift; quasars: general; radio lines: galaxies; submillimeter: galaxies; C-II LINE; SPECTRAL ENERGY-DISTRIBUTIONS; DENSE MOLECULAR GAS; HIGH-Z EXPLORATION; M-CIRCLE-DOT; HIGH-REDSHIFT; DUST EMISSION; MU-M; BLACK-HOLE; THERMAL EMISSION;

D O I：

10.3847/1538-4357/ab133d

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present Karl G. Jansky Very Large Array observations of the CO (2-1) line emission toward three far-infrared luminous quasars at z similar to 6: SDSS J231038.88+ 185519.7 and SDSS J012958.51-003539.7 with similar to 0.'' 6 resolution and SDSS J205406.42-000514.8 with similar to 2.'' 1 resolution. All three sources are detected in the CO (2-1) line emission-one source is marginally resolved, and the other two appear as point sources. Measurements of the CO (2-1) line emission allow us to calculate the molecular gas mass even without a CO excitation model. The inferred molecular gas masses are (0.8-4.3) x 10(10) M-circle dot. The widths and redshifts derived from the CO (2-1) line are consistent with previous CO (6-5) and [C II] measurements. We also report continuum measurements using Herschel for SDSS J231038.88+ 185519.7 and SDSS J012958.51-003539.7, and for SDSS J231038.88 + 185519.7 data obtained at similar to 140 and similar to 300 GHz using the Atacama Large Millimeter/submillimeter Array. In the case of SDSS J231038.88+ 185519.7, we present a detailed analysis of the spectral energy distribution and derive the dust temperature (similar to 40 K), the dust mass (similar to 10(9) M-circle dot), the far-infrared luminosity (8-1000 mu m; similar to 10(13) L-circle dot), and the star formation rate (2400-2700 M-circle dot yr(-1)). Finally, an analysis of the photodissociation regions associated with the three high-redshift quasars indicates that the interstellar medium in these sources has similar properties to local starburst galaxies.

引用

页数：11

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