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Redshifted H I and ...
Redshifted H I and OH absorption in radio galaxies and quasars
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- Curran, S.J. (författare)
- University of New South Wales (UNSW)
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- Whiting, M. T. (författare)
- University of New South Wales (UNSW),Commonwealth Scientific and Industrial Research Organisation (CSIRO)
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- Murphy, M. T. (författare)
- University Of Cambridge,Swinburne University of Technology
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- Webb, J. K. (författare)
- University of New South Wales (UNSW)
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- Bignell, C. (författare)
- National Radio Astronomy Observatory
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- Polatidis, A. G. (författare)
- Netherlands Institute for Radio Astronomy (ASTRON),Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
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- Wiklind, Tommy, 1957 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Francis, P. (författare)
- Australian National University
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- Langston, G. (författare)
- National Radio Astronomy Observatory
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(creator_code:org_t)
- 2011-02-21
- 2011
- Engelska.
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Ingår i: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 413:2, s. 1165-1173
- Relaterad länk:
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http://dx.doi.org/10...
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https://academic.oup...
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- From a survey for the redshifted H i 21-cm and OH 18-cm absorption in the hosts of a sample of radio galaxies and quasars, we detect H i in three of the 10 and OH in none of the 14 sources for which useful data were obtained. As expected from our recent result, all of the 21-cm detections occur in sources with ultraviolet (UV) continuum luminosities of L(UV) 1023 W Hz-1. Our 21-cm detections in combination with those previously published give a total of eight (associated and intervening) H i-absorbing sources searched and undetected in OH. Using the detected 21-cm line strengths to normalize the limits, we find that only two of these eight sources may have been searched sufficiently deeply in OH, even though these are marginal.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- sky survey
- ultraviolet: galaxies
- fundamental constants
- unified schemes
- galaxies: fundamental parameters
- absorption
- optical-spectra
- high-redshift
- active galactic nuclei
- red quasars
- galaxies
- absorbing gas
- 21 cm absorption
- galaxies: active
- quasars: absorption lines
- radio lines: galaxies
- flat-spectrum sample
- molecular
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- ref (ämneskategori)
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Curran, S.J.
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Whiting, M. T.
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Murphy, M. T.
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Webb, J. K.
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Bignell, C.
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Polatidis, A. G.
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Wiklind, Tommy, ...
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Francis, P.
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Langston, G.
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Chalmers tekniska högskola