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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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