Published April 3, 2003
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Journal Article
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A Molecular Einstein Ring: Imaging a Starburst Disk Surrounding a Quasi-Stellar Object
Abstract
Images of the molecular CO 2-1 line emission and the radio continuum emission from the redshift 4.12 gravitationally lensed quasi-stellar object (QSO) PSS J2322+1944 reveal an Einstein ring with a diameter of 1.5″. These observations are modeled as a star-forming disk surrounding the QSO nucleus with a radius of 2 kiloparsecs. The implied massive star formation rate is 900 solar masses per year. At this rate, a substantial fraction of the stars in a large elliptical galaxy could form on a dynamical time scale of 108 years. The observation of active star formation in the host galaxy of a high-redshift QSO supports the hypothesis of coeval formation of supermassive black holes and stars in spheroidal galaxies.
Additional Information
© 2003 American Association for the Advancement of Science. 21 January 2003; accepted 20 March 2003; published online 3 April 2003. The National Radio Astronomy Observatory (NRAO) is operated by Associated Universities under a cooperative agreement with NSF. S.G.D. acknowledges partial support from the Bressler Foundation.Attached Files
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Additional details
- Eprint ID
- 51861
- Resolver ID
- CaltechAUTHORS:20141117-141533147
- Bressler Foundation
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2014-11-18Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field