EAS Publications Series
Volume 4, 2002Infrared and Submillimeter Space Astronomy: An International Colloquium to Honor the Memory of Guy Serra
|Page(s)||363 - 363|
|Published online||25 September 2002|
M. Giard, J.P. Bernard, A. Klotz and I. Ristorcelli (eds)
EAS Publications Series, 4 (2002) 363
Dust destruction and intermittent star formation history in blue compact dwarf galaxies
Osservatorio Astrofisico di Arcetri, Largo
E. Fermi 5, 50125 Firenze, Italy
2 Department of Astronomy, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
We investigate the origin of the variance in dust-to-gas ratio, D, among blue compact dwarf galaxies (BCDs), finding that the observed variance can be reproduced by two effects: (i) variation of gas mass contained in star-forming region; (ii) the contribution of type Ia SNe to total SN rate. The two effects are found to affect largely D when the metallicity reaches the typical value for BCDs. The two effects can be caused by intermittent star formation activity in BCDs.
© EAS, EDP Sciences, 2002
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