Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Photodissociation feedback of Population III stars \\on their neighbor
  prestellar cores   We investigate the star formation process in primordial environment in the
presence of radiative feedback by other population III stars formed earlier. In
this paper, we focus our attention on the effects by photodissociative
radiation toward the full understanding of the radiative feedback effects. We
perform three dimensional radiation hydrodynamics simulations on this issue as
well as analytic estimates, paying special attention on the self-shielding
effect and dynamics of the star-forming cloud. As a result, we find that the
ignition timing of the source star is crucial. If the ignition is later than
the epoch when the central density of the collapsing cloud exceeds $\sim
10^3-10^4{\rm cm^{-3}}$, the collapse cannot be reverted, even if the source
star is located at $\la$ 100pc. The uncertainty of the critical density comes
from the variety of initial conditions of the collapsing cloud. We also find
the analytic criteria for a cloud to collapse with given central density,
temperature and the Lyman-Werner(LW) band flux which irradiates the cloud.
  Although we focus on the radiation from neighbor stars, this result can also
be applied to the effects of diffuse LW radiation field, that is expected to be
built up prior to the reionization of the universe. We find that
self-gravitating clouds can easily self-shield from diffuse LW radiation and
continue their collapse for densities larger than $\sim 10^3 {\rm cm^{-3}}$.

37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
11
The categories of this paper are: hep-lat
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
15
The categories of this paper are: nucl-ex
8
The categories of this paper are: hep-ex
0
The categories of this paper are: hep-ph
17
The categories of this paper are: q-fin
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
25
The categories of this paper are: patt-sol