Other
Scientific paper
Jul 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001hst..prop.9196d&link_type=abstract
HST Proposal ID #9196
Other
Hst Proposal Id #9196 Galaxies
Scientific paper
Young star clusters provide a unique indicator as to the past star formation of a galaxy. In addition to providing a fossil record of past star formation activity {similarly to the stellar content}, it appears that the amount and nature of cluster formation depends strongly on the environmental conditions. The nature of these objects {indistinguishable from bright or foreground stars from the ground} has made a detailed study difficult in the past; the advent of textitHST and its superior resolution circumvents this problem. Previous textitHST studies have focused on interacting systems and merger remnants {where young clusters are expected to be abundant}, leaving a number of questions unanswered, such as: {1} Is the ratio of massive cluster formation to total star formation constant? {2} Are trends {if any} along the Hubble sequence analogous to those seen in larger OB associations and HII regions? We propose to address these and other questions through a survey of t. he. cluster populations of nearby {< 25 Mpc} galaxies through the use of archival textitHST images. We have developed an efficient and effective technique for such a study, with the use of HSTphot for photometry and object size measurements, and artificial cluster tests to aid in the conversion of observed parameters into physical parameters.
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