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Star formation activity in the cluster spiral NGC 4254

Published online by Cambridge University Press:  01 August 2006

Krzysztof T. Chyży ,
Rainer Beck  and
Stanisław Ryś
Krzysztof T. Chyży
Affiliation:
Astronomical Observatory, Jagiellonian University, Kraków, Poland
Rainer Beck
Affiliation:
Max-Planck-Institut für Radioastronomie, Bonn, Germany
Stanisław Ryś
Affiliation:
Astronomical Observatory, Jagiellonian University, Kraków, Poland
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Abstract

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With sensitive radio observations of a Virgo Cluster spiral NGC 4254 we are able to decompose thermal and synchrotron radio emission and, based on the thermal component, construct the SFR distribution within the galaxy, unaffected by dust extinction. The mean SFR per unit area is several times higher than in other galaxies of similar Hubble type. Contrary to other Virgo spirals the SFR distribution is not spatially truncated, in concordance with the observed weak HI deficiency. We propose that the SFR enhancement and the observed disturbed morphology of this galaxy can be attributed to tidal triggering by another nearby cluster member.

Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S237: Triggered Star Formation in a Turbulent ISM , August 2006 , pp. 402
Copyright
Copyright © International Astronomical Union 2007