Simulating a white dwarf dominated halo

Details Simulating a white dwarf dominated halo Simulating a white dwarf dominated halo

2001-09-28

arxiv.org/abs/astro-ph/0109537v1

Astronomy and Astrophysics

Astrophysics

2 pages, 1 table, to appear in the proceedings of IAU Symp. 208, "Astrophysical Supercomputing Using Particles", eds. J. Makin

Scientific paper

Halo initial mass functions (IMFs) heavily biased toward white dwarf (WD) precursors ~1-8 Msun have been suggested as a suitable mechanism for explaining MACHO events. However, by simple chemical evolution argument, Gibson & Mould (1997; GM97) pointed out that such WD-heavy IMFs (wdIMF) cause the overproduction of carbon and nitrogen. We re-examine this problem using numerical simulations.

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