The Mass And Luminosity Functions Of Compact Star Clusters In M82, M83, NGC2841, And NGC4214

Details The Mass And Luminosity Functions Of Compact Star Clusters In M82, M83, NGC2841, And NGC4214 The Mass And Luminosity Functions Of Compact Star Clusters In M82, M83, NGC2841, And NGC4214

May 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21631607w&link_type=abstract

American Astronomical Society, AAS Meeting #216, #316.07; Bulletin of the American Astronomical Society, Vol. 41, p.897

Astronomy and Astrophysics

Astronomy

Scientific paper

We study the compact, massive star cluster populations in the four nearby galaxies M82, M83, NGC 2841, and NGC 4214 based on our new WFC3 observations observed as part of the Early Release Science (ERS) observations. These data have unprecedented depth in the UV (F225W) and U (F336W) filters, providing some of the highest quality images to date of nearby galaxy at these wavelengths. We separate star clusters from individual stars using their sizes and colors. The integrated colors of the star clusters are compared with predictions from stellar evolution models in order to estimate the age, reddening, and mass for each cluster. The mass and luminosity distributions for the clusters are presented, and the formation and disruption history based on these diagrams are discussed. Our primary goal is to test the "universal model" for the formation and destruction of star clusters in star-forming galaxies.
This project is based on Early Release Science observations made by the WFC3 Scientific Oversight Committee. We are grateful to the Director of the Space Telescope Science Institute for awarding Director's Discretionary time for this program. Support for program #11360 was provided by NASA through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555.

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