HERSCHEL-ATLAS: A BINARY HyLIRG PINPOINTING A CLUSTER OF STARBURSTING PROTOELLIPTICALS

被引：147

作者：

Ivison, R. J. ^{[1
,2
]}

Swinbank, A. M. ^{[3
]}

Smail, Ian ^{[3
]}

Harris, A. I. ^{[4
]}

Bussmann, R. S. ^{[5
]}

Cooray, A. ^{[6
]}

Cox, P. ^{[7
]}

Fu, H. ^{[6
]}

Kovacs, A. ^{[8
]}

Krips, M. ^{[7
]}

Narayanan, D. ^{[9
]}

Negrello, M. ^{[10
]}

Neri, R. ^{[7
]}

Penarrubia, J. ^{[2
]}

Richard, J. ^{[11
]}

Riechers, D. A. ^{[12
]}

Rowlands, K. ^{[13
]}

Staguhn, J. G. ^{[14
]}

Targett, T. A. ^{[2
]}

Amber, S. ^{[15
]}

Baker, A. J. ^{[16
]}

Bourne, N. ^{[13
]}

Bertoldi, F. ^{[17
]}

Bremer, M. ^{[18
]}

Calanog, J. A. ^{[6
]}

Clements, D. L. ^{[19
]}

Dannerbauer, H. ^{[20
]}

Dariush, A. ^{[21
]}

De Zotti, G. ^{[10
,22
]}

Dunne, L. ^{[23
]}

Eales, S. A. ^{[24
]}

Farrah, D. ^{[25
]}

Fleuren, S. ^{[26
]}

Franceschini, A. ^{[27
]}

Geach, J. E. ^{[28
]}

George, R. D. ^{[2
]}

Helly, J. C. ^{[3
]}

Hopwood, R. ^{[15
,19
]}

Ibar, E. ^{[1
,29
]}

Jarvis, M. J. ^{[30
,31
]}

Kneib, J. -P. ^{[32
]}

Maddox, S. ^{[23
]}

Omont, A. ^{[33
,34
]}

Scott, D. ^{[35
]}

Serjeant, S. ^{[15
]}

Smith, M. W. L. ^{[24
]}

Thompson, M. A. ^{[28
]}

Valiante, E. ^{[24
]}

Valtchanov, I. ^{[36
]}

Vieira, J. ^{[37
]}

机构：

[1] Royal Observ, Sci & Technol Facil Council, UK Astron Technol Ctr, Edinburgh EH9 3HJ, Midlothian, Scotland

[2] Univ Edinburgh, Inst Astron, Royal Observ, Edinburgh EH9 3HJ, Midlothian, Scotland

[3] Univ Durham, Inst Computat Cosmol, Durham DH1 3LE, England

[4] Univ Maryland, Dept Astron, College Pk, MD 20742 USA

[5] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[6] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

[7] Inst Radio Astron Millimetr, F-38406 St Martin Dheres, France

[8] Univ Minnesota, Dept Astron, Minneapolis, MN 55414 USA

[9] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA

[10] Osserv Astron Padova, INAF, I-35122 Padua, Italy

[11] Univ Lyon 1, Ctr Rech Astrophys Lyon, F-69561 St Genis Laval, France

[12] Cornell Univ, Dept Astron, Ithaca, NY 14853 USA

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

[14] Johns Hopkins Univ, Henry A Rowland Dept Phys & Astron, Baltimore, MD 21218 USA

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

[16] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[17] Univ Bonn, Argelander Inst Astron, D-53121 Bonn, Germany

[18] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England

[19] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England

[20] Univ Vienna, Inst Astrophys, A-1180 Vienna, Austria

[21] Univ Cambridge, Inst Astron, Cambridge CB3 0HA, England

[22] SISSA, I-34136 Trieste, Italy

[23] Univ Canterbury, Dept Phys & Astron, Christchurch 1, New Zealand

[24] Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales

[25] Virginia Polytech Inst & State Univ, Dept Phys, Blacksburg, VA 24061 USA

[26] Queen Mary Univ London, Sch Phys & Astron, London E1 4NS, England

[27] Univ Padua, Dept Astron, I-35122 Padua, Italy

[28] Univ Hertfordshire, Ctr Astrophys Res, Hatfield AL10 9AB, Herts, England

[29] Catholic Univ Chile, Dept Astron & Astrofis, Casilla 306 22, Santiago, Chile

[30] Univ Oxford, Dept Phys, Oxford OX1 3RH, England

[31] Univ Western Cape, Dept Phys, ZA-7535 Bellville, South Africa

[32] Observ Geneva, EPFL SB IPEP LASTRO, CH-1290 Sauverny, Switzerland

[33] Univ Paris 06, UPMC, F-75014 Paris, France

[34] CNRS, UMR7095, F-75014 Paris, France

[35] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

[36] Herschel Sci Ctr, European Space Astron Ctr, ESA, E-28691 Villanueva De La Canada, Spain

[37] CALTECH, Pasadena, CA 91125 USA

[38] Leiden Univ, Leiden Observ, NL-2300 RA Leiden, Netherlands

来源：

ASTROPHYSICAL JOURNAL | 2013年 / 772卷 / 02期

基金：

美国国家科学基金会; 欧洲研究理事会;

关键词：

galaxies: high-redshift; galaxies: starburst; infrared: galaxies; radio continuum: galaxies; radio lines: galaxies; submillimeter: galaxies; STAR-FORMATION RATES; ULTRALUMINOUS INFRARED GALAXIES; LUMINOUS SUBMILLIMETER GALAXIES; SCIENCE DEMONSTRATION PHASE; SPITZER-SPACE-TELESCOPE; ACTIVE GALACTIC NUCLEI; GREEN BANK TELESCOPE; HIGH-REDSHIFT; MOLECULAR GAS; MASS FUNCTION;

D O I：

10.1088/0004-637X/772/2/137

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Panchromatic observations of the best candidate hyperluminous infrared galaxies from the widest Herschel extragalactic imaging survey have led to the discovery of at least four intrinsically luminous z = 2.41 galaxies across an approximate to 100 kpc region-a cluster of starbursting protoellipticals. Via subarcsecond interferometric imaging we have measured accurate gas and star formation surface densities. The two brightest galaxies span similar to 3 kpc FWHM in submillimeter/radio continuum and CO J = 4-3, and double that in CO J = 1-0. The broad CO line is due partly to the multitude of constituent galaxies and partly to large rotational velocities in two counter-rotating gas disks-a scenario predicted to lead to the most intense starbursts, which will therefore come in pairs. The disks have M-dyn of several x 10(11) M-circle dot, and gas fractions of similar to 40%. Velocity dispersions are modest so the disks are unstable, potentially on scales commensurate with their radii: these galaxies are undergoing extreme bursts of star formation, not confined to their nuclei, at close to the Eddington limit. Their specific star formation rates place them greater than or similar to 5x above the main sequence, which supposedly comprises large gas disks like these. Their high star formation efficiencies are difficult to reconcile with a simple volumetric star formation law. N-body and dark matter simulations suggest that this system is the progenitor of a B(inary)-type approximate to 10(14.6)-M-circle dot cluster.

引用

页数：15

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