Herschel observations and a model for IRAS 08572+3915: a candidate for the most luminous infrared galaxy in the local (z < 0.2) Universe

被引：34

作者：

Efstathiou, A. ^{[1
]}

Pearson, C. ^{[2
,3
]}

Farrah, D. ^{[4
]}

Rigopoulou, D. ^{[2
,5
]}

Gracia-Carpio, J. ^{[6
]}

Verma, A. ^{[5
]}

Spoon, H. W. W. ^{[7
]}

Afonso, J. ^{[8
,9
]}

Bernard-Salas, J. ^{[3
,10
]}

Clements, D. L. ^{[11
]}

Cooray, A. ^{[12
]}

Cormier, D. ^{[13
]}

Etxaluze, M. ^{[14
]}

Fischer, J.

Gonzalez-Alfonso, E. ^{[15
]}

Hurley, P. ^{[16
]}

Lebouteiller, V. ^{[7
,17
]}

Oliver, S. J. ^{[16
]}

Rowan-Robinson, M. ^{[11
]}

Sturm, E. ^{[6
]}

机构：

[1] European Univ Cyprus, Sch Sci, CY-1516 Nicosia, Cyprus

[2] CCLRC Rutherford Appleton Lab, Space Sci & Technol Dept, Didcot OX11 0QX, Oxon, England

[3] Open Univ, Dept Phys, Astrophys Grp, Milton Keynes MK7 6AA, Bucks, England

[4] Virginia Tech, Dept Phys, Blacksburg, VA 24061 USA

[5] Univ Oxford, Oxford OX1 3RH, England

[6] Max Planck Inst Extraterr Phys, D-85741 Garching, Germany

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

[8] Univ Lisbon, Observ Astron Lisboa, Ctr Astron Astrofis, P-1349018 Lisbon, Portugal

[9] Univ Lisbon, Fac Sci, Dept Phys, P-1749016 Lisbon, Portugal

[10] Univ Paris 11, Inst Astrophys Spatiale, F-91405 Orsay, France

[11] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Astrophys Grp, London SW7 2AZ, England

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

[13] Heidelberg Univ, Zentrum Astron, Inst Theoret Astrophys, D-69120 Heidelberg, Germany

[14] CSIC INTA, Ctr Astrobiol, Dept Astrofis, E-28850 Madrid, Spain

[15] Univ Alcala de Henares, Dept Fis & Matemat, E-28871 Alcala De Henares, Spain

[16] Univ Sussex, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England

[17] Univ Paris Diderot, CNRS, CEA DSM, DAPNIA Serv Astrophys,Lab AIM, F-91191 Gif Sur Yvette, France

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2014年 / 437卷 / 01期

关键词：

radiative transfer; galaxies: active; galaxies: individual (IRAS 08572+3915); infrared: galaxies; SPECTRAL ENERGY-DISTRIBUTIONS; ACTIVE GALACTIC NUCLEI; RADIATIVE-TRANSFER MODELS; STAR-FORMATION; SILICATE ABSORPTION; CIRRUS MODELS; CLUMPY TORI; DUSTY TORI; STARBURST; EMISSION;

D O I：

10.1093/mnrasl/slt131

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present Herschel photometry and spectroscopy, carried out as part of the Herschel ultraluminous infrared galaxy (ULIRG) survey, and a model for the infrared to submillimetre emission of the ULIRG IRAS 08572+3915. This source shows one of the deepest known silicate absorption features and no polycyclic aromatic hydrocarbon emission. The model suggests that this object is powered by an active galactic nucleus (AGN) with a fairly smooth torus viewed almost edge-on and a very young starburst. According to our model, the AGN contributes about 90 per cent of the total luminosity of 1.1 x 10(13) L-circle dot, which is about a factor of 5 higher than previous estimates. The large correction of the luminosity is due to the anisotropy of the emission of the best-fitting torus. Similar corrections may be necessary for other local and high-z analogues. This correction implies that IRAS 08572+3915 at a redshift of 0.058 35 may be the nearest hyperluminous infrared galaxy and probably the most luminous infrared galaxy in the local (z < 0.2) Universe. IRAS 08572+3915 shows a low ratio of [C II] to IR luminosity (log L-[C II]/L-IR < -3.8) and a [OI] 63 mu m to [CII] 158 mu m line ratio of about 1 that supports the model presented in this Letter.

引用

页码：L16 / L20

页数：5

共 58 条

[1] DUST-BOUNDED ULTRALUMINOUS INFRARED GALAXIES: MODEL PREDICTIONS FOR INFRARED SPECTROSCOPIC SURVEYS [J].