Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...199.4905h&link_type=abstract
American Astronomical Society, 199th AAS Meeting, #49.05; Bulletin of the American Astronomical Society, Vol. 33, p.1372
Astronomy and Astrophysics
Astronomy
1
Scientific paper
We are undertaking a comprehensive study of the recent star-formation histories of nearby starburst galaxies, using both broad- and narrow-band HST/WFPC2 imaging. Our goal is to understand the physical processes which drive galaxy evolution, with a particular focus on the starburst phenomenon, and on the role that environment plays in determining a galaxy's star formation history. For this purpose, we have selected a sample of four nearby galaxies which are host to very similar nuclear starbursts, despite a wide range in their mass, metallicity, and environment. Our multiwavelength HST observations of each galaxy allow us to: (1) use their cluster populations as tracers of the recent star-formation history; (2) map the distribution of dust; and (3) study the energetic star formation feedback by examining the shocked and photoionized gas in these systems. By studying nearby systems in detail, we hope to provide a foundation with which more distant, unresolved star forming galaxies can be understood. Our cluster-based star-formation histories have already been published for NGC 5253 and M 83; in this paper, we present preliminary results of our analysis of the clusters in the remaining galaxies (NGC 3077 and NGC 4214). In addition, we compare the star-formation histories of all four galaxies, and examine trends with mass, metallicity and environment.
Calzetti Daniela
Conselice Christopher J.
Gallagher John S. III
Harris Jason
Smith Alastair D.
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