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The molecular gas properties in external galaxies

Published online by Cambridge University Press:  21 March 2013

E. Bayet ,
S. Viti ,
M. Bureau ,
R. Aladro ,
D. Williams ,
T. Davis ,
S. Martin ,
L. Young  and
A. Crocker
E. Bayet
Affiliation:
Sub-Dept. of Astrophysics, Dept. of Physics at University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, U.K. email: bayet@physics.ox.ac.uk
S. Viti
Affiliation:
Dept. of Physics and Astronomy, University College London, Kathleen Lonsdale Building, Gower Street, London WC1 6BT, U.K. email: sv@star.ucl.ac.uk
M. Bureau
Affiliation:
Sub-Dept. of Astrophysics, Dept. of Physics at University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, U.K. email: bayet@physics.ox.ac.uk
R. Aladro
Affiliation:
Dept. of Physics and Astronomy, University College London, Kathleen Lonsdale Building, Gower Street, London WC1 6BT, U.K. email: sv@star.ucl.ac.uk
D. Williams
Affiliation:
Dept. of Physics and Astronomy, University College London, Kathleen Lonsdale Building, Gower Street, London WC1 6BT, U.K. email: sv@star.ucl.ac.uk
T. Davis
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching bei Muenchen, Germany email: tdavis@eso.org
S. Martin
Affiliation:
European Southern Observatory, Avda. Alonso de Cordoba 3107, Vitacura, Casilla 19001, Santiago 19, ChileSergio Martin email: smartin@eso.org
L. Young
Affiliation:
New Mexico Tech, 801 Leroy Place, Socorro, NM 8780, USA email: lyoung@physics.nmt.edu
A. Crocker
Affiliation:
Department of Astronomy, University of Massachusetts, Lederle Graduate Research Tower B 619E, 710 North Pleasant Street, Amherst, MA 01003-9305, USA email: crocker@astro.umass.edu
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Abstract

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We present a summary of the physical and chemical properties we have obtained for the molecular gas found in galaxies, an essential triggering ingredient to any star formation (SF) process. In particular, we focus our studies on the molecular gas phases as traced by CO, HCO+ and CS line emissions, in a sample of galaxies including starbursts -SBs-, irregulars galaxies, low-metallicity sources, normal spirals, mergers, Early Type Galaxies (ETGs), galaxies with an Active Galactic Nucleus (AGN), with Cosmic Ray Dominated Regions (CRDRs) and with Photo-Dominated Regions (PDRs). Our studies mix theoretical developments (i.e. computational models) with the acquisition of large observational datatsets (at both low and high spatial resolution) that we then compare in order to better determine the conditions under which some SF activity is starting and/or is maintained.

Keywords

astrochemistry — ISM: molecules — submillimeter — stars: formation — ISM: abundances — galaxies: ISM
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. 219 - 222
Copyright
Copyright © International Astronomical Union 2013

References

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