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Molecular Gas and Star-formation in Selected H-ATLAS SDP Lensed SMGs

Published online by Cambridge University Press:  21 March 2013

Lerothodi L. Leeuw ,
Dominik A. Riechers ,
John M. Carpenter ,
Mattia Negrello ,
Rob J. Ivison  and
H-ATLAS Lensing and Core
Lerothodi L. Leeuw
Affiliation:
College of Graduate Studies, UNISA, P. O. Box 392, UNISA, 0003, South Africa SETI Institute, 189 Bernardo Avenue, Suite 100, Mountain View, CA 94043, USA email: lerothodi@alum.mit.edu
Dominik A. Riechers
Affiliation:
Astronomy Department, California Institute of Technology, MC 249-17, 1200 East California Boulevard, Pasadena, CA 91125, USA Hubble Fellow email: dr@astro.caltech.edu
John M. Carpenter
Affiliation:
Astronomy Department, California Institute of Technology, MC 249-17, 1200 East California Boulevard, Pasadena, CA 91125, USA
Mattia Negrello
Affiliation:
Open University, Milton Keynes, MK7 6AA, United Kingdom
Rob J. Ivison
Affiliation:
UK Astronomy Technology Centre, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ Institute for Astronomy, University of Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, UK
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Abstract

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We present detections of spatially resolved CO(J = 2→1) and CO(J = 3→2) emission, respectively, from the lensed submillimeter (submm) galaxies (SMGs), ID 9 (z = 1.577) and ID 17b (z = 2.308), found in the Science Demonstration Phase (SDP) of the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS, www.h-atlas.org). The detections were obtained using the Combined Array for Research in Millimeter-wave Astronomy (CARMA, www.mmarray.org) and confirm redshifts of the lensed galaxies. We exploit the CARMA data together with existing high-J observations, to determine, among other physical properties of the lensed SMGs, the CO line luminosities, brightness temperature ratios, gas masses, and spatial sizes.

Keywords

galaxies: distances and redshifts — galaxies: ISM — gravitational lensing — molecular data — submillimeter
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S292: Molecular Gas, Dust, and Star Formation in Galaxies , August 2012 , pp. 192
Copyright
Copyright © International Astronomical Union 2013