Image Details
Caption: Fig. 4.
Hα rotation curve of IC 2574 (open circles) compared with the H I rotation curve (filled circles) from Martimbeau, Carignan, & Roy (1994), showing the approaching (dashed line) and receding (continuous line) sides of the Hα curve.
© 2001. The American Astronomical Society. All rights reserved. Printed in U.S.A.