First Stars
First Stars
Early peaks in the density field
Masses of first stars
Metallicity distribution functions
Figure 2 from
Bromm and Larson ARAA 2004
:
Condition for successful formation of cold, dense gas clouds.
Mass-weighted mean H
2
fraction versus virial temperature. (
Open circles
) DM halos that fail to host cold gas clouds. (
Filled circles
) DM halos that succeed in harboring star-forming clouds. The critical line corresponds to the condition
t
cool
t
ff
. (From
Yoshida et al. 2003a
.)
tff.
(From Yoshida
et al. 2003a.) tff.
(From Yoshida
et al. 2003a.)