The ATLAS3D Project – XIV. The extent and kinematics of the molecular gas in early-type galaxies
Year: 2012
Type: article
Abstract: We use interferometric 12 CO(1-0) observations to compare and contrast the extent, surface brightness profiles and kinematics of the molecular gas in CO-rich ATLAS 3D early-type galaxies (ETGs) and spiral galaxies.We find that the molecular gas extent is smaller in absolute terms in ETGs than in late-type galaxies, but that the size distributions are similar once scaled by the galaxies optical/stellar characteristic scalelengths.Amongst ETGs, we find that the extent of the gas is independent of its kinematic misalignment (with respect to the stars), but does depend on the environment, with Virgo cluster ETGs having less extended molecular gas reservoirs, further emphasizing that cluster ETGs follow different evolutionary pathways from those in the field.Approximately half of ETGs have molecular gas surface brightness profiles that follow the stellar light profile.These systems often have relaxed gas out to large radii, suggesting they are unlikely to have had recent merger/accretion events.A third of the sample galaxies show molecular gas surface brightness profiles that fall off slower than the light, and sometimes show a truncation.These galaxies often have a low mass, and either
DOI: 10.1093/mnras/sts353
Authors: Timothy A. Davis, Katherine Alatalo, Martin Bureau, Michele Cappellari, Nicholas Scott, Lisa M. Young, Leo Blitz, Alison Crocker, Estelle Bayet, Maxime Bois, Frédéric Bournaud, Roger L. Davies, P. T. de Zeeuw, Pierre-Alain Duc, Eric Emsellem, Sadegh Khochfar, Davor Krajnović, Harald Kuntschner, Pierre-Yves Lablanche, Richard M. McDermid, Raffaella Morganti, Thorsten Naab, Tom Oosterloo, Marc Sarzi, Paolo Serra, Anne-Marie Weijmans
Institutions: European Southern Observatory, University of Oxford, European Southern Observatory, University of California, Berkeley, Swinburne University of Technology, New Mexico Institute of Mining and Technology, University of Massachusetts Amherst, University of Massachusetts System, Centre National de la Recherche Scientifique, Observatoire de Paris, Laboratoire d’Etudes du Rayonnement et de la Matière en Astrophysique et Atmosphères, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, CEA Paris-Saclay - Etablissement de Saclay, Astrophysique, Instrumentation et Modélisation, Sorbonne Paris Cité, CEA Paris-Saclay, Institut de Recherche sur les Lois Fondamentales de l'Univers, Université Paris Diderot, Leiden University, Leiden Observatory, Lyon 1 Université, École Normale Supérieure de Lyon, Observatoire de Lyon, Centre de Recherche Astrophysique de Lyon, Max Planck Society, Max Planck Institute for Extraterrestrial Physics, Space Telescope European Coordinating Facility, International Gemini Observatory, University of Groningen, Netherlands Institute for Radio Astronomy, Max Planck Institute for Astrophysics, University of Hertfordshire, University of Toronto
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Funders: National Science Foundation, National Aeronautics and Space Administration, James S. McDonnell Foundation, Gordon and Betty Moore Foundation, Kenneth T. and Eileen L. Norris Foundation, California Institute of Technology, University of Chicago, Royal Society, Deutsche Forschungsgemeinschaft, Max-Planck-Gesellschaft, Centre National de la Recherche Scientifique, Jet Propulsion Laboratory, Science and Technology Facilities Council, FP7 Ideas: European Research Council
Awards: G2422605018, G4305749261, G5596260316, Astrophysics at Oxford: 2010-2015, G6078595445, G6120727724, Astrophysics at Oxford, Short-term Visitors to Oxford Astrophysics - bridging support, Angular momentum transfer in galaxy formation and evolution, Supermassive black holes and nuclear stellar disks, nuclear keys to galaxy formation and evolution, G7873814991, G8085321155, G825502566, Short-term Visitors to Oxford Astrophysics
OpenAlex ID: W2110198441