Image Details
Caption: Fig. 9.
Star formation rates per unit surface area in M⊙ Gyr−1 pc−2 derived from the models in Fig. 8, accounting for the fraction of stars of age t over the disk thickness, relative to those inside a sphere of given radius. Ages are expressed in gigayears.
© 2001. The American Astronomical Society. All rights reserved. Printed in U.S.A.