We show that the star formation activity of spiral galaxies has a great variety. The star formation variation in a time scale of 10 8 yr and the mechanism responsible for the variation are discussed.
키워드
star formationspiral galaxies
저자
AKIHIKO TOMITA(Institute of Astronomy, Faculty of Science, University of Tokyo)
YOSHIO TOMITA(Department of Astronomy, Faculty of Science, Kyoto University)
MAMORU SAITO(Department of Astronomy, Faculty of Science, Kyoto University)