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Resolution and Kinematics of Molecular Gas Surrounding the Cloverleaf Quasar at z = 2.6 Using the Gravitational Lens

Yun, M. S. and Scoville, N. Z. and Carrasco, J. J. and Blandford, R. D. (1997) Resolution and Kinematics of Molecular Gas Surrounding the Cloverleaf Quasar at z = 2.6 Using the Gravitational Lens. Astrophysical Journal, 479 (1). L9-L13. ISSN 0004-637X. doi:10.1086/310580.

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Gravitational lenses have long been advertised as primitive telescopes, capable of magnifying cosmologically distant sources. In this Letter we present new, 0 9 resolution CO (7-6) observations of the z = 2.56 Cloverleaf quasar (H1413+117) and spatially resolved images. By modeling the gravitational lens, we infer a size scale of 0.”3 (~1 kpc) for the molecular gas structure surrounding the quasar, and the gas has a kinematic structure roughly consistent with a rotating disk. The observed properties of the CO-emitting gas are similar to the nuclear starburst complexes found in the infrared luminous galaxies in the local universe, and metal enrichment by vigorous star formation within this massive nuclear gas complex can explain the abundance of carbon and oxygen in the interstellar medium of this system observed when the universe was only a few billion years old. Obtaining corresponding details in an unlensed object at similar distances would be well beyond the reach of current instruments, and this study highlights the less exploited yet powerful use of a gravitational lens as a natural telescope.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Yun, M. S.0000-0001-7095-7543
Scoville, N. Z.0000-0002-0438-3323
Blandford, R. D.0000-0002-1854-5506
Additional Information:© 1997 The American Astronomical Society. Received 1996 December 4; accepted 1997 January 23. The authors are grateful to E. Falco for kindly providing the HST image for the analysis and comparison, and to R. Barvainis for sharing his unpublished data. This manuscript also benefited greatly from the careful reading and useful suggestions by P. Ho and referee R. Antonucci. This research is supported in part by NSF grant AST 93-14079.
Funding AgencyGrant Number
NSFAST 93-14079
Subject Keywords:cosmology: observations—galaxies: starburst—infrared: galaxies—ISM: molecules— quasars: individual (H14131117)
Issue or Number:1
Record Number:CaltechAUTHORS:20190531-145053960
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Official Citation:M. S. Yun et al 1997 ApJ 479 L9
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96016
Deposited By: Tony Diaz
Deposited On:31 May 2019 22:08
Last Modified:16 Nov 2021 17:17

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