AAS Meeting #194 - Chicago, Illinois, May/June 1999
Session 6. Interactions, Mergers and Starbursts
Display, Monday, May 31, 1999, 9:20am-6:30pm, Southwest Exhibit Hall

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[6.08] Chronospectrophometry of Starburst Galaxies

D. Devost (STScI/Universite Laval.)

A new method to derive age differences between the various super star clusters observed in starburst galaxies using the two color diagram (B-H) vs (H-K) (BHK diagram) and 2-D spectroscopy is presented. This method offers a quick and easy way to differentiate very young and intermediate age stellar populations even if data on extinction are unavailable. In this case, discrimination of regions younger and older than 4 Myr is feasible. With the availability of data on extinction, the time resolution can be improved significantly. The application of the method to various starbursting systems is presented. The validity of the method is checked by comparing the equivalent width of the H\alpha line with the chronological map obtained with the BHK diagram.

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