Other
Scientific paper
May 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.1602k&link_type=abstract
American Astronomical Society Meeting 210, #16.02; Bulletin of the American Astronomical Society, Vol. 39, p.115
Other
Scientific paper
We present a comprehensive catalog of all separable clusters in the joint M51/NGC 5195 system chronicling the approximate ages, sizes, and surrounding environments of the current star cluster population. The unparalleled, previously unachievable resolution afforded by the Hubble Advanced Camera for Surveys/Wide Field Camera Imaging Survey 10452 presents a unique opportunity to determine stellar cluster age. This is achieved by measuring the main sequence turnoff point for each individual cluster, a method previously rendered unviable by insufficient resolution. These ages provide a test bed for comparison with other age determination methods and estimations made from previous datasets; we can specifically test the correlation between cluster size and age, and reconfirm and enhance conclusions derived from WFPC2 observations, which offered only half the resolution of the ACS/WFC. Cross-correlating with FUV and FIR observations from GALEX and Spitzer, respectively, provides the necessary reference for zeroing in on the specific state and composition of each cluster site. This catalog was compiled in order to gain insight into the stellar life of this unique colliding galaxy system, and to set the stage for future catalogs of star clusters in other galaxies, with an ultimate goal of gaining a deeper understanding of galactic position and local environment on the star formation process.
Kaleida Catherine C.
Scowen Paul A.
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