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Emission from extragalactic star forming gas

Published online by Cambridge University Press:  04 October 2008

E. Bayet
Affiliation:
Department of Physics and Astronomy of University College London, Gower Street, London W1W 6HD, UK
S. Viti
Affiliation:
Department of Physics and Astronomy of University College London, Gower Street, London W1W 6HD, UK
D.A. Williams
Affiliation:
Department of Physics and Astronomy of University College London, Gower Street, London W1W 6HD, UK
J.M.C Rawlings
Affiliation:
Department of Physics and Astronomy of University College London, Gower Street, London W1W 6HD, UK
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Abstract

We adopted a Galactic model of massive star forming regions (Viti & Williams 1999; Viti et al. 2001) to predict the possible range of chemical abundances of more than 200 species in extragalactic star forming regions. We find that hot core molecules should be detectable in external active galaxies out to high redshift. We present a summary of this study as well as observations of typical tracers of extragalactic hot cores to confirm the modelling work. We detected for the first time the CS(7-6) line in the center of M 82 and we provide the first detection of CS taken in the Antennae (NGC 4038).

Type
Research Article
Copyright
© EAS, EDP Sciences, 2008

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References

Bayet, E., Viti, S., Williams, D.A., & Rawlings, J.M.C., 2008a, ApJ, accepted
Bayet, E., Viti, S., Williams, D.A., & Rawlings, J.M.C., 2008b, ApJL, in preparation
Viti, S., Caselli, P., Hartquist, T.W., & Williams, D.A., 2001, A&A, 370, 1017
Viti, S., & Williams, D.A., 1999, MNRAS, 305, 755 CrossRef