Other
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21545523w&link_type=abstract
American Astronomical Society, AAS Meeting #215, #455.23; Bulletin of the American Astronomical Society, Vol. 42, p.476
Other
Scientific paper
It is not yet clear whether the star formation in circumnuclear
starbursts occurs in a single burst, or whether it is due to the
propagation of star formation from one region to another. The high precision age-dating possible from ultraviolet spectra of very young star clusters provides a means of differentiating between these two scenarios. We analyze archival Hubble Space Telescope (HST) observations, including ultraviolet imaging and spectroscopy, of compact star clusters located within the circumnuclear starburst of M83, the nearest such example. We compare the observed spectra with two sets of Starburst99 models, older, semi-empirical models and new fully theoretical models based on a new synthetic library of high-resolution UV spectra for hot massive stars. From this comparison, we determine the intrinsic reddenings, the masses, and most importantly, the ages of the brightest clusters in M83's circumnuclear starburst region.
Chandar Rupali
Leitherer Cl.
Wofford Aida
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