A Molecular Einstein Ring: Imaging a Starburst Disk Surrounding a Quasi-Stellar Object | Zendy

C. L. Carilli | Zendy; Geraint F. Lewis | Zendy; S. G. Djorgovski | Zendy; A. Mahabal | Zendy; P. Cox | Zendy; F. Bertoldi | Zendy; A. Omont | Zendy

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A Molecular Einstein Ring: Imaging a Starburst Disk Surrounding a Quasi-Stellar Object

Author(s) -

C. L. Carilli,

Geraint F. Lewis,

S. G. Djorgovski,

A. Mahabal,

P. Cox,

F. Bertoldi,

A. Omont

Publication year - 2003

Publication title -

science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 12.556

H-Index - 1186

eISSN - 1095-9203

pISSN - 0036-8075

DOI - 10.1126/science.1082600

Subject(s) - physics , astrophysics , galaxy , star formation , supermassive black hole , astronomy , stars , redshift

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.

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