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Dust-reddened Quasars

Published online by Cambridge University Press:  25 April 2016

M. J. Drinkwater ,
R. L. Webster ,
P. J. Francis ,
T. Wiklind  and
F. Combes
M. J. Drinkwater
Affiliation:
Anglo-Australian Observatory, Coonabarabran, NSW 2357, Australia
R. L. Webster
Affiliation:
School of Physics, University of Melbourne, Parkville, Vic. 3052, Australia
P. J. Francis
Affiliation:
School of Physics, University of Melbourne, Parkville, Vic. 3052, Australia
T. Wiklind
Affiliation:
Onsala Space Observatory, S-43992, Sweden
F. Combes
Affiliation:
DEMIRM, Observatoire de Paris, 61 Ave de l’Observatoire, F-75014 Paris, France
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Extract

We have recently discovered evidence for a population of radio-loud quasars that is reddened by dust. The dust is either along the line of sight to the quasars or is associated with the quasars. In the latter case the dust may be in molecular clouds in the quasar’s host galaxy, or in a molecular torus around the nucleus. We are planning to use 3 mm observations to search for molecular absorption lines (CO and HCO+) associated with dust at the redshift of these quasars. If any absorption systems are detected we will be able to deduce detailed information about the physical state of the molecular gas, hopefully showing which of the proposed locations of the dust is most likely.

Type
Workshop on Millimetre-wave Astronomy
Information
Publications of the Astronomical Society of Australia , Volume 13 , Issue 2 , May 1996 , pp. 183 - 184
Copyright
Copyright © Astronomical Society of Australia 1996

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References

Drinkwater, M. J., et al. 1996, MNRAS, submittedGoogle Scholar
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