Image Details
Caption: Fig. 3.
Observed CO spectroscopic indices and Brγ equivalent widths for four positions within M83 (location given in parentheses) together with loci for three starburst evolutionary models having exponentially decreasing star formation rates and timescales of 1, 5, and 20 × 106 yr. The numbers adjacent to the fiducial crosses denote the model ages in Myr.
© 1997. The American Astronomical Society. All rights reserved. Printed in U.S.A.