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Black hole accretio...
Black hole accretion and star formation as drivers of gas excitation and chemistry in Markarian 231
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- van der Werf, P.P. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Isaak, K. (author)
- Cardiff University,European Space Research and Technology Centre (ESA ESTEC)
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- Meijerink, R. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Spaans, M. (author)
- Rijksuniversiteit Groningen,University of Groningen
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- Rykala, A. (author)
- Cardiff University
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Fulton, T. (author)
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- Loenen, A. F. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Walter, F. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Weiss, A. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Armus, L. (author)
- Spitzer Science Center, United States
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- Fischer, J. (author)
- Naval Research Laboratory
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- Israel, F. P. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Harris, A. I. (author)
- University of Maryland
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- Veilleux, S. (author)
- University of Maryland
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- Henkel, C. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Savini, G. (author)
- University College London (UCL)
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- Lord, S. (author)
- California Institute of Technology (Caltech)
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- Smith, H. A. (author)
- Harvard-Smithsonian Center for Astrophysics
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- Gonzalez-Alfonso, E. (author)
- Universidad de Alcala,University of Alcalá
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- Naylor, D. A. (author)
- University of Lethbridge
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- Aalto, Susanne, 1964 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Charmandaris, V. (author)
- Panepistimio Kritis,University of Crete
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- Dasyra, K. M. (author)
- Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA),The French Alternative Energies and Atomic Energy Commission (CEA)
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- Evans, A. (author)
- University of Virginia,National Radio Astronomy Observatory
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- Gao, Y. (author)
- Chinese Academy of Sciences
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- Greve, T. R. (author)
- Niels Bohr Institute,Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Güsten, R. (author)
- Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Kramer, C. (author)
- Institut de Radioastronomie Millimétrique (IRAM)
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- Martin-Pintado, J. (author)
- CSIC - Instituto de Estructura de la Materia (IEM)
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- Mazzarella, J. (author)
- California Institute of Technology (Caltech)
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Papadopoulos, P. P. (author)
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- Sanders, D. B. (author)
- University of Hawaii
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- Spinoglio, L. (author)
- Consiglo Nazionale Delle Richerche
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- Stacey, G. (author)
- Cornell University
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- Vlahakis, C. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Wiedner, M. C. (author)
- LERMA - Laboratoire d'Etudes du Rayonnement et de la Matiere en Astrophysique et Atmospheres, France
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- Xilouris, E. M. (author)
- National Observatory of Athens
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(creator_code:org_t)
- 2010-07-16
- 2010
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 518:Article Number: L42
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Abstract
Subject headings
Close
- We present a full high resolution SPIRE FTS spectrum of the nearby ultraluminous infrared galaxy Mrk 231. In total 25 lines are detected, including CO J = 5-4 through J = 13-12, 7 rotational lines of H2O, 3 of OH+ and one line each of H2O+, CH+, and HF. We find that the excitation of the CO rotational levels up to J = 8 can be accounted for by UV radiation from star formation. However, the approximately flat luminosity distribution of the CO lines over the rotational ladder above J = 8 requires the presence of a separate source of excitation for the highest CO lines. We explore X-ray heating by the accreting supermassive black hole in Mrk 231 as a source of excitation for these lines, and find that it can reproduce the observed luminosities. We also consider a model with dense gas in a strong UV radiation field to produce the highest CO lines, but find that this model strongly overpredicts the hot dust mass in Mrk 231. Our favoured model consists of a star forming disk of radius 560 pc, containing clumps of dense gas exposed to strong UV radiation, dominating the emission of CO lines up to J = 8. X-rays from the accreting supermassive black hole in Mrk 231 dominate the excitation and chemistry of the inner disk out to a radius of 160 pc, consistent with the X-ray power of the AGN in Mrk 231. The extraordinary luminosity of the OH+ and H2O+ lines reveals the signature of X-ray driven excitation and chemistry in this region.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- galaxies: individual: Mrk 231
- galaxies: nuclei
- infrared: galaxies
- diagnostics
- galaxy nuclei
- galaxies: ISM
- galaxies: starburst
- lines
- galaxies: active
- dense gas
- emission
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
To the university's database
- By the author/editor
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van der Werf, P. ...
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Isaak, K.
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Meijerink, R.
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Spaans, M.
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Rykala, A.
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Fulton, T.
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show more...
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Loenen, A. F.
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Walter, F.
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Weiss, A.
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Armus, L.
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Fischer, J.
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Israel, F. P.
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Harris, A. I.
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Veilleux, S.
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Henkel, C.
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Savini, G.
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Lord, S.
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Smith, H. A.
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Gonzalez-Alfonso ...
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Naylor, D. A.
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Aalto, Susanne, ...
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Charmandaris, V.
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Dasyra, K. M.
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Evans, A.
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Gao, Y.
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Greve, T. R.
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Güsten, R.
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Kramer, C.
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Martin-Pintado, ...
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Mazzarella, J.
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Papadopoulos, P. ...
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Sanders, D. B.
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Spinoglio, L.
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Stacey, G.
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Vlahakis, C.
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Wiedner, M. C.
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Xilouris, E. M.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
- Articles in the publication
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Astronomy and As ...
- By the university
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Chalmers University of Technology