Chemodynamical Simulations with Variable IMF
Kobayashi, Chiaki
(2010)
Chemodynamical Simulations with Variable IMF.
In:
Hunting for the Dark : the Hidden Side of Galaxy Formation.
AIP Conf Procs
.
American Institute of Physics (AIP), Qawra, pp. 123-126.
ISBN 978-0-7354-0786-2
Using self-consistent chemodynamical simulations including star formation, supernova feedback, and chemical enrichment, I show the dependence of the initial mass function (IMF) on cosmic star formation and chemical enrichment histories. The effects of Pop-III IMF can be only seen in the elemental abundance ratios at z greater than or similar to 4 or [Fe/H] less than or similar to - 2. The preferable IMF has a flatter slope in the case of high star formation rate (SFR) and smaller upper-mass (similar to 20M(circle dot)) in the case of low SFR, which is consistent with the observed elemental abundances of dwarf spheroidal galaxies. However, the [alpha/Fe] problem of elliptical galaxies may require other solutions.
Item Type | Book Section |
---|---|
Keywords | initial mass function, evolution |
Date Deposited | 15 May 2025 16:26 |
Last Modified | 30 May 2025 23:11 |
Explore Further
-
picture_as_pdf - kobayashi1002.4475v1.pdf
-
subject - Submitted Version
Share this file
Downloads