Herschel-PACS spectroscopic diagnostics of local ULIRGs: Conditions and kinematics in Markarian 231

被引：222

作者：

Fischer, J. ^{[1
]}

Sturm, E. ^{[2
]}

Gonzalez-Alfonso, E. ^{[3
]}

Gracia-Carpio, J. ^{[2
]}

Hailey-Dunsheath, S. ^{[2
]}

Poglitsch, A. ^{[2
]}

Contursi, A. ^{[2
]}

Lutz, D. ^{[2
]}

Genzel, R. ^{[2
]}

Sternberg, A. ^{[4
]}

Verma, A. ^{[5
]}

Tacconi, L. ^{[2
]}

机构：

[1] USN, Res Lab, Remote Sensing Div, Washington, DC 20375 USA

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

[3] Univ Alcala de Henares, Dept Fis, Alcala De Henares, Spain

[4] Tel Aviv Univ, Sackler Sch Phys & Astron, IL-69978 Tel Aviv, Israel

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

来源：

ASTRONOMY & ASTROPHYSICS | 2010年 / 518卷

关键词：

infrared: galaxies; galaxies: ISM; quasars: absorption lines; galaxies: individual: Mrk 231; ULTRALUMINOUS INFRARED GALAXIES; IR-BRIGHT GALAXIES; PHYSICAL CONDITIONS; SPACE-TELESCOPE; STAR-FORMATION; MOLECULAR GAS; STARBURSTS; EXCITATION; LINES;

D O I：

10.1051/0004-6361/201014676

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this first paper on the results of our Herschel PACS survey of local ultra luminous infrared galaxies (ULIRGs), as part of our SHINING survey of local galaxies, we present far-infrared spectroscopy of Mrk 231, the most luminous of the local ULIRGs, and a type 1 broad absorption line AGN. For the first time in a ULIRG, all observed far-infrared fine-structure lines in the PACS range were detected and all were found to be deficient relative to the far infrared luminosity by 1-2 orders of magnitude compared with lower luminosity galaxies. The deficits are similar to those for the mid-infrared lines, with the most deficient lines showing high ionization potentials. Aged starbursts may account for part of the deficits, but partial covering of the highest excitation AGN powered regions may explain the remaining line deficits. A massive molecular outflow, discovered in OH and (OH)-O-18, showing outflow velocities out to at least 1400 km s(-1), is a unique signature of the clearing out of the molecular disk that formed by dissipative collapse during the merger. The outflow is characterized by extremely high ratios of O-18/O-16 suggestive of interstellar medium processing by advanced starbursts.

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