1999A&A...350..694B


Query : 1999A&A...350..694B

1999A&A...350..694B - Astronomy and Astrophysics, volume 350, 694-704 (1999/10-2)

A class of self-gravitating accretion disks.

BERTIN G. and LODATO G.

Abstract (from CDS):

We consider a class of steady-state self-gravitating accretion disks for which efficient cooling mechanisms are assumed to operate so that the disk is self-regulated at a condition of approximate marginal Jeans stability. In an earlier paper, this scenario had been shown to lead naturally, in the absence of a central point mass, to a self-similar solution characterized by a flat rotation curve. In this article we investigate the entire parameter space available for such self-regulated accretion disks and provide two non-trivial extensions of the model. The first extension is that of a bimodal disk, obtained by partially relaxing the self-regulation constraint, so that full matching with an inner ``standard" Keplerian accretion disk takes place. The second extension is the construction of self-regulated accretion disks embedded in a diffuse spherical ``halo". The analysis is further strengthened by a careful discussion of the vertical structure of the disk, in such a way that the transition from self-gravity dominated to non-gravitating disks is covered uniformly.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - gravitation - hydrodynamics

Simbad objects: 6

goto View the references in ADS

Number of rows : 6
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 M 77 GiP 02 42 40.7091669408 -00 00 47.859690204 9.70 9.61 8.87 10.1 9.9 ~ 4322 2
2 NGC 1386 GiP 03 36 46.238 -35 59 57.39 12.42 12.16 11.23 10.76   ~ 492 1
3 NGC 3079 Sy2 10 01 57.8789863992 +55 40 47.449758324 11.57 11.54 10.86     ~ 1311 3
4 M 106 Sy2 12 18 57.620 +47 18 13.39   9.14 8.41 8.11   ~ 2228 3
5 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1365 2
6 NAME Circinus Galaxy Sy2 14 13 09.906 -65 20 20.47   10.89 9.84 10.6 10.0 ~ 1093 2

To bookmark this query, right click on this link: simbad:objects in 1999A&A...350..694B and select 'bookmark this link' or equivalent in the popup menu


2022.05.22-01:26:34

© Université de Strasbourg/CNRS

    • Contact