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Off-nuclear starburst in a triple merger

Published online by Cambridge University Press:  21 March 2013

Petri Väisänen ,
Juha Reunanen ,
Jari Kotilainen  and
Seppo Mattila
Petri Väisänen
Affiliation:
SAAO, South Africa
Juha Reunanen
Affiliation:
Tuorla Observatory, Finland
Jari Kotilainen
Affiliation:
FINCA, Finland
Seppo Mattila
Affiliation:
Tuorla Observatory, Finland
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Abstract

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We present SINFONI observations of IRAS 19115-2124, dubbed the Bird, an intriguing triple galaxy encounter. NIR line strengths and line ratios are used to study the sequence of events in this complex system. The most massive and obscured component shows LINER-like activity, while the least massive irregular component is the source of 3/4 of the current total SF. This most recent compact starburst lies 3 kpc away from the dynamically dominant components. Cool and warm gas inflows and outflows are detected at the locations of the progenitor nuclei.

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. 338
Copyright
Copyright © International Astronomical Union 2013

References

Vaisanen, P., et al. 2008, MNRAS, 384, 886Google Scholar