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The mysterious morp...
The mysterious morphology of MRC0943-242 as revealed by ALMA and MUSE
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- Gullberg, B. (author)
- European Southern Observatory (ESO)
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- De Breuck, C. (author)
- European Southern Observatory (ESO)
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Lehnert, M. (author)
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- Vernet, J. (author)
- European Southern Observatory (ESO)
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- Bacon, R. (author)
- Université de Lyon
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- Drouart, Guillaume, 1987 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Emonts, B. (author)
- Centro de Astrobiologia (CAB)
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- Galametz, 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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- Ivison, R. J. (author)
- European Southern Observatory (ESO),University of Edinburgh
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- Nesvadba, N. (author)
- Université Paris-Sud XI,University of Paris-Sud XI
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- Richard, J. (author)
- Université de Lyon
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- Seymour, N. (author)
- Curtin University
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Stern, D. (author)
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- Wylezalek, D. (author)
- Johns Hopkins University
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(creator_code:org_t)
- 2016-02-04
- 2016
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 586
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http://dx.doi.org/10...
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https://www.aanda.or...
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Abstract
Subject headings
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- © 2016 ESO. We present a pilot study of the z = 2.923 radio galaxy MRC0943-242, where we combine information from ALMA and MUSE data cubes for the first time. Even with modest integration times, we disentangle the AGN and starburst dominated components. These data reveal a highly complex morphology as the AGN, starburst, and molecular gas components show up as widely separated sources in dust continuum, optical continuum, and CO line emission observations. CO(1-0) and CO(8-7) line emission suggest that there is a molecular gas reservoir offset from both the dust and the optical continuum that is located ∼90 kpc from the AGN. The UV line emission has a complex structure in emission and absorption. The line emission is mostly due to a large scale ionisation cone energised by the AGN, and a Lyα emitting bridge of gas between the radio galaxy and a heavily star-forming set of components. Strangely, the ionisation cone has no Lyα emission. We find this is due to an optically thick layer of neutral gas with unity covering fraction spread out over a region of at least ∼100 kpc from the AGN. Other less thick absorption components are associated with Lyα emitting gas within a few tens of kpc from the radio galaxy and are connected by a bridge of emission. We speculate that this linear structure of dust, Lyα and CO emission, and the redshifted absorption seen in the circum nuclear region may represent an accretion flow feeding gas into this massive AGN host galaxy.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Keyword
- Galaxies: active
- Galaxies: evolution
- Galaxies: high-redshift
- Galaxies: halos
- Galaxies: ISM
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Gullberg, B.
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De Breuck, C.
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Lehnert, M.
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Vernet, J.
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Bacon, R.
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Drouart, Guillau ...
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show more...
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Emonts, B.
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Galametz, A.
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Ivison, R. J.
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Nesvadba, N.
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Richard, J.
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Seymour, N.
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Stern, D.
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Wylezalek, D.
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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 Earth and Relate ...
- Articles in the publication
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Astronomy and As ...
- By the university
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Chalmers University of Technology