z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies: II. Dust properties☆

被引：11

作者：

Ismail, D. ^{[1
,2
]}

Beelen, A. ^{[1
,2
,4
,5
]}

Buat, V. ^{[1
,2
]}

Berta, S. ^{[3
]}

Cox, P. ^{[4
,5
]}

Stanley, F. ^{[3
]}

Young, A. ^{[6
]}

Jin, S. ^{[7
]}

Neri, R. ^{[3
]}

Bakx, T. ^{[8
,9
,10
]}

Dannerbauer, H. ^{[11
,12
]}

Butler, K. ^{[3
]}

Cooray, A. ^{[13
]}

Nanni, A. ^{[14
,15
]}

Omont, A. ^{[4
,5
]}

Serjeant, S. ^{[16
]}

van der Werf, P. ^{[17
]}

Vlahakis, C. ^{[18
]}

Weiss, A. ^{[19
]}

Yang, C. ^{[8
]}

Baker, A. J. ^{[6
,20
]}

Bendo, G. ^{[21
]}

Borsato, E. ^{[22
]}

Chartab, N. ^{[13
]}

Dye, S. ^{[23
]}

Eales, S. ^{[24
]}

Gavazzi, R. ^{[1
,2
]}

Hughes, D. ^{[25
]}

Ivison, R. ^{[26
,27
,28
,29
]}

Jones, B. M. ^{[30
]}

Krips, M. ^{[3
]}

Lehnert, M. ^{[31
]}

Marchetti, L. ^{[32
,33
]}

Messias, H. ^{[34
,35
]}

Negrello, M. ^{[24
]}

Perez-Fournon, I. ^{[11
,12
]}

Riechers, D. A. ^{[30
]}

Urquhart, S. ^{[16
]}

机构：

[1] Aix Marseille Univ, CNRS, 38 Rue Frederic Joliot Curie, F-13013 Marseille, France

[2] CNES, Lab Astrophys Marseille, 38 Rue Frederic Joliot Curie, F-13013 Marseille, France

[3] Inst Radioastron Millimetr IRAM, 300 Rue Piscine, F-38400 St Martin Dheres, France

[4] Sorbonne Univ, UPMC Univ Paris 6, 98Bis Blvd Arago, F-75014 Paris, France

[5] Inst Astrophys Paris, CNRS, UMR 7095, 98Bis Blvd Arago, F-75014 Paris, France

[6] Rutgers State Univ, Dept Phys & Astron, 136 Frelinghuysen Rd, Piscataway, NJ 08854 USA

[7] Cosm DAWN Ctr, Radmandsgade 62, DK-2200 Copenhagen N, Denmark

[8] Chalmers Univ Technol, Dept Space Earth & Environm, Onsala Space Observ, S-43992 Onsala, Sweden

[9] Nagoya Univ, Grad Sch Sci, Div Particle & Astrophys Sci, Aichi 4648602, Japan

[10] Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan

[11] Inst Astrofis Canarias IAC, San Cristobal la Laguna 38205, Tenerife, Spain

[12] Univ La Laguna, Dpto Astrofis, San Cristobal la Laguna 38206, Tenerife, Spain

[13] Univ Calif Irvine, Dept Phys & Astron, FRH 2174, Irvine, CA 92697 USA

[14] Natl Ctr Nucl Res, Ul Pasteura 7, PL-02093 Warsaw, Poland

[15] INAF Osservatorio Astron Abruzzo, Via Maggini SNC, I-64100 Teramo, Italy

[16] Open Univ, Dept Phys Sci, Milton Keynes MK7 6AA, England

[17] Leiden Univ, Leiden Observ, POB 9513, NL-2300 RA Leiden, Netherlands

[18] Natl Radio Astron Observ, 520 Edgemont Rd, Charlottesville, VA 22903 USA

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

[20] Univ Western Cape, Dept Phys & Astron, Robert Sobukwe Rd, ZA-7535 Bellville, South Africa

[21] Univ Manchester, UK ALMA Reg Ctr Node, Jodrell Bank Ctr Astrophys, Dept Phys & Astron, Oxford Rd, Manchester M13 9PL, England

[22] Univ Padua, Dipartimento Fis & Astron G Galilei, Vicolo Osservatorio 3, I-35122 Padua, Italy

[23] Univ Nottingham, Sch Phys & Astron, Univ Pk, Nottingham NG7 2RD, England

[24] Cardiff Univ, Sch Phys & Astron, Queens Bldg, Cardiff CF24 3AA, Wales

[25] Inst Nacl Astrofis Opt & Electr, Astrophys Dept, Apdo 51 & 216, Tonantzintla 72000, Puebla, Mexico

[26] European Southern Observ, Karl Schwarzschild Str 2, D-85748 Garching, Germany

[27] Macquarie Univ, Dept Phys & Astron, N Ryde, NSW, Australia

[28] Dublin Inst Adv Studies, Sch Cosm Phys, 31 Fitzwilliam Pl, Dublin D02 XF86, Ireland

[29] Univ Edinburgh, Inst Astron, Blackford Hill, Edinburgh EH9 3HJ, Scotland

[30] Iniversitat Koln, Phys Inst 1, Zulpicher Str 77, D-50937 Cologne, Germany

[31] Ctr Rech Astrophys Lyon CRAL, CNRS UMR 5574, CNRS, ENS Lyon,UMR 5574, 9 Ave Charles Andre, F-69230 St Genis Laval, France

[32] Univ Western Cape, Dept Phys & Astron, Private Bag X17, ZA-7535 Cape Town, South Africa

[33] Ist Nazl Astrofis, Ist Radioastron, Via Gobetti 101, I-40129 Bologna, Italy

[34] Joint ALMA Observ, Alonso De Cordova 3107, Vitacura 7630355, Santiago De Chi, Chile

[35] European Southern Observ, Alonso Cordova 3107, Vitacura 19001, Santiago De Chi, Chile

来源：

ASTRONOMY & ASTROPHYSICS | 2023年 / 678卷

基金：

美国国家科学基金会;

关键词：

galaxies: high-redshift; galaxies: evolution; infrared: galaxies; submillimeter: galaxies; COSMOLOGY LEGACY SURVEY; FAR-INFRARED PROPERTIES; FORMING GALAXIES; SUBMILLIMETER GALAXIES; TEMPERATURE-DEPENDENCE; MULTIWAVELENGTH PROPERTIES; STARBURST GALAXIES; MASSIVE GALAXIES; SURVEY BEARS; ALMA SURVEY;

D O I：

10.1051/0004-6361/202346804

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the dust properties of 125 bright Herschel galaxies selected from the z-GAL NOEMA spectroscopic redshift survey. All the galaxies have precise spectroscopic redshifts in the range 1.3 < z < 5.4. The large instantaneous bandwidth of NOEMA provides an exquisite sampling of the underlying dust continuum emission at 2 and 3 mm in the observed frame, with flux densities in at least four sidebands for each source. Together with the available Herschel 250, 350, and 500 mu m and SCUBA-2 850 mu m flux densities, the spectral energy distribution (SED) of each source can be analyzed from the far-infrared to the millimeter, with a fine sampling of the Rayleigh-Jeans tail. This wealth of data provides a solid basis to derive robust dust properties, in particular the dust emissivity index (beta) and the dust temperature (T-dust). In order to demonstrate our ability to constrain the dust properties, we used a flux-generated mock catalog and analyzed the results under the assumption of an optically thin and optically thick modified black body emission. The robustness of the SED sampling for the z-GAL sources is highlighted by the mock analysis that showed high accuracy in estimating the continuum dust properties. These findings provided the basis for our detailed analysis of the z-GAL continuum data. We report a range of dust emissivities with beta similar to 1.5 - 3 estimated up to high precision with relative uncertainties that vary in the range 7%-15%, and an average of 2.2 +/- 0.3. We find dust temperatures varying from 20 to 50 K with an average of T-dust similar to 30 K for the optically thin case and T-dust similar to 38 K in the optically thick case. For all the sources, we estimate the dust masses and apparent infrared luminosities (based on the optically thin approach). An inverse correlation is found between T-dust and beta with beta proportional to T-dust(-0.69), which is similar to what is seen in the local Universe. Finally, we report an increasing trend in the dust temperature as a function of redshift at a rate of 6.5 +/- 0.5 K/z for this 500 mu m-selected sample. Based on this study, future prospects are outlined to further explore the evolution of dust temperature across cosmic time.

引用

页数：27

共 50 条

[1] z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies
Cox, P.
Neri, R.
Berta, S.
Ismail, D.
Stanley, F.
Young, A.
Jin, S.
Bakx, T.
Beelen, A.
Dannerbauer, H.
Krips, M.
Lehnert, M.
Omont, A.
Riechers, D. A.
Baker, A. J.
Bendo, G.
Borsato, E.
Buat, V.
Butler, K.
Chartab, N.
Cooray, A.
Dye, S.
Eales, S.
Gavazzi, R.
Hughes, D.
Ivison, R.
Jones, B. M.
Marchetti, L.
Messias, H.
Nanni, A.
Negrello, M.
Perez-Fournon, I.
Serjeant, S.
Urquhart, S.
Vlahakis, C.
Weiss, A.
van der Werf, P.
Yang, C.
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[2] z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies
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[3] z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies III. Physical properties
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