Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mass accretion rates in self-regulated disks of T Tauri stars   We have studied numerically the evolution of protostellar disks around
intermediate and upper mass T Tauri stars (0.25 M_sun < M_st < 3.0 M_sun) that
have formed self-consistently from the collapse of molecular cloud cores. In
the T Tauri phase, disks settle into a self-regulated state, with low-amplitude
nonaxisymmetric density perturbations persisting for at least several million
years. Our main finding is that the global effect of gravitational torques due
to these perturbations is to produce disk accretion rates that are of the
correct magnitude to explain observed accretion onto T Tauri stars. Our models
yield a correlation between accretion rate M_dot and stellar mass M_st that has
a best fit M_dot \propto M_st^{1.7}, in good agreement with recent
observations. We also predict a near-linear correlation between the disk
accretion rate and the disk mass.

3
The categories of this paper are: physics
18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
34
The categories of this paper are: chem-ph