Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The study of colliding molecular clumps evolution   The results of study of the gravitational fragmentation in the interstellar
medium (ISM) by clump-clump collisions are presented. We suggest, that
collision of clumps, that are subparts of Giant Molecular Clouds (GMC) may be
on of the basic mechanism, which result to ISM fragmentation and define the
dynamical as well as statistical characteristics (e.g. the mass spectra) of
protostellar condensation. In the present paper, we describe our 3D
SPH-modeling, in isothermal approximation, of supersonic collisions of two
identical clumps with a few variants of initial impact parameters ($\beta$),
that cover the wide range. Our results shown, that at all $\beta$ in system
began intensive fragmentation. The resulting fragments mass function depend
from initial impact parameter. The obtained mass spectra have the slopes in a
good enough agreement with observational data for our Galaxy -- especially for
large impact parameters, which are more realistic as for large clumps
ensembles.

31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
4
The categories of this paper are: cond-mat
5
The categories of this paper are: gr-qc
11
The categories of this paper are: hep-lat
17
The categories of this paper are: q-fin
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th