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Paper IPM / Astronomy / 12529

School of Astronomy

Title:

The Effect of Self-Gravity on the Equilibrium Structure of a Non-Rotating Thick Disk

Author(s):

1 .	j. Ghanbari
2 .	s. Abbassi
3 .	s. Ataei

Status:

To Appear

Journal:

JDUBS

Pages:

175-182

Supported by:

IPM

Abstract:

We investigate the effect of self-gravity on the equilibrium structure of a thick non-rotating disk around a central object by the self-similar method. We introduce three dimensionless variables Csg, Ct and Ck that indicate the relative importance of self-gravity, thermal energy and kinetic energy, respectively. We study the effect of each of them on the structure of the disk. Our selfsimilar solutions show that the self-gravity modifies the structure of the disk. We find out by increasing the ratio of disk mass to the central object mass, the disk becomes thinner. Our results show that increasing kinetic and thermal energies have similar effects on the structure of the disk and make it thicker.

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