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The ATLAS^(3D) project – XVIII. CARMA CO imaging survey of early-type galaxies

Alatalo, Katherine (2013) The ATLAS^(3D) project – XVIII. CARMA CO imaging survey of early-type galaxies. Monthly Notices of the Royal Astronomical Society, 432 (3). pp. 1796-1844. ISSN 0035-8711. doi:10.1093/mnras/sts299.

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We present the Combined Array for Research in Millimeter Astronomy (CARMA) ATLAS^(3D) molecular gas imaging survey, a systematic study of the distribution and kinematics of molecular gas in CO-rich early-type galaxies. Our full sample of 40 galaxies (30 newly mapped and 10 taken from the literature) is complete to a ^(12)CO(1–0) integrated flux of 18.5 Jy km s^(−1),^1 and it represents the largest, best studied sample of its type to date. A comparison of the CO distribution of each galaxy to the g − r colour image (representing dust) shows that the molecular gas and dust distributions are in good agreement and trace the same underlying interstellar medium. The galaxies exhibit a variety of CO morphologies, including discs (50 per cent), rings (15 per cent), bars+rings (10 per cent), spiral arms (5 per cent) and mildly (12.5 per cent) and strongly (7.5 per cent) disrupted morphologies. There appear to be weak trends between galaxy mass and CO morphology, whereby the most massive galaxies in the sample tend to have molecular gas in a disc morphology. We derive a lower limit to the total accreted molecular gas mass across the sample of 2.48 × 10^(10) M_⊙, or approximately 8.3 × 10^8 M_⊙ per minor merger within the sample, consistent with minor merger stellar mass ratios.

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Alatalo, Katherine0000-0002-4261-2326
Additional Information:© 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. Accepted 2012 October 19. Received 2012 October 19; in original form 2012 July 1. We thank the anonymous referee for insightful comments and suggestions. KA thanks C. Heiles, K. Nyland, G. Graves, R. Plambeck, E. Rosolowsky and J. Carpenter for useful conversations. KA also wants to thank Lisa Wei in particular for collaboration on NGC5173. The research of KA is supported by the NSF grants AST-0838258 and AST-0908572. The research of KA is also supported by NASA grant HST-GO-12526. PS is an NWO/Veni fellow. RMMcD is supported by the Gemini Observatory, which is operated by the Association of Universities for Research in Astronomy, Inc., on behalf of the international Gemini partnership of Argentina, Australia, Brazil, Canada, Chile, the United Kingdom and the United States of America. RLD and MB are supported by the rolling grants ‘Astrophysics at Oxford’ PP/E001114/1 and ST/H002456/1 from the UK Research Councils. RLD acknowledges travel and computer grants from Christ Church, Oxford and support from the Royal Society in the form of a Wolfson Merit Award 502011.K502/jd. TN acknowledges support from the DFG Cluster of Excellence: ‘Origin and Structure of the Universe’. Support for CARMA construction was derived from the states of California, Illinois and Maryland, the James S. McDonnell Foundation, the Gordon and Betty Moore Foundation, the Kenneth T. and Eileen L. Norris Foundation, the University of Chicago, the Associates of the California Institute of Technology and the National Science Foundation. Ongoing CARMA development and operations are supported by the National Science Foundation under a cooperative agreement and by the CARMA partner universities. This paper is partly based on observations carried out with the IRAM 30-m telescope. IRAM is supported by INSU/CNRS (France),MPG (Germany) and ING (Spain). We acknowledge use of the HYPERLEDA data base ( and the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.
Funding AgencyGrant Number
Gemini ObservatoryUNSPECIFIED
Particle Physics and Astronomy Research Council (PPARC)PP/E001114/1
Science and Technology Facilities Council (STFC)ST/H002456/1
Royal Society502011.K502/jd
Deutsche Forschungsgemeinschaft (DFG)UNSPECIFIED
State of CaliforniaUNSPECIFIED
James S. McDonnell FoundationUNSPECIFIED
Gordon and Betty Moore FoundationUNSPECIFIED
Kenneth T. and Eileen L. Norris FoundationUNSPECIFIED
University of ChicagoUNSPECIFIED
Caltech AssociatesUNSPECIFIED
State of IllinoisUNSPECIFIED
CARMA partner universitiesUNSPECIFIED
State of MarylandUNSPECIFIED
Issue or Number:3
Record Number:CaltechAUTHORS:20130930-081615903
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Official Citation:Katherine Alatalo, Timothy A. Davis, Martin Bureau, Lisa M. Young, Leo Blitz, Alison F. Crocker, Estelle Bayet, Maxime Bois, Frédéric Bournaud, Michele Cappellari, Roger L. Davies, P. T. de Zeeuw, Pierre-Alain Duc, Eric Emsellem, Sadegh Khochfar, Davor Krajnović, Harald Kuntschner, Pierre-Yves Lablanche, Raffaella Morganti, Richard M. McDermid, Thorsten Naab, Tom Oosterloo, Marc Sarzi, Nicholas Scott, Paolo Serra, and Anne-Marie Weijmans The ATLAS3D project – XVIII. CARMA CO imaging survey of early-type galaxies MNRAS (July 01, 2013) Vol. 432 1796-1844 first published online May 14, 2013 doi:10.1093/mnras/sts299
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:41539
Deposited By: Ruth Sustaita
Deposited On:30 Sep 2013 19:34
Last Modified:10 Nov 2021 04:31

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