The Effect of the Self-Gravity of Gas on Gas Fueling in a Barred Galaxy with a Supermassive Black Hole

Details The Effect of the Self-Gravity of Gas on Gas Fueling in a Barred Galaxy with a Supermassive Black Hole The Effect of the Self-Gravity of Gas on Gas Fueling in a Barred Galaxy with a Supermassive Black Hole

Jan 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000apj...529..109f&link_type=abstract

The Astrophysical Journal, Volume 529, Issue 1, pp. 109-118.

Physics

28

Black Hole Physics, Galaxies: Nuclei, Galaxies: Starburst, Ism: Kinematics And Dynamics, Methods: Numerical

Scientific paper

In our previous paper, we showed that a gas disk in the nuclear region of a barred galaxy that contains a central supermassive black hole (SMBH) rapidly evolves into a nuclear gas ring because of an additional inner Lindblad resonance caused by the SMBH. In this paper, we investigate the fate of the gas ring, which involves the self-gravity of gas, using two-dimensional hydrodynamical simulations. We find that the gas ring becomes gravitationally unstable for the surface density of the gas above a critical value and fragments into several gas clumps. Some denser clumps increase their mass via the accretion of the surrounding gas and collisions with other clumps, and finally a very massive gas clump (M~107 Msolar) is formed. Because of the torque from the massive clump, a part of the gas in the ring loses its angular momentum and falls into the galactic center. As a result, a nuclear gas disk (R~50 pc) is formed around the SMBH. The accretion rate for R<50 pc reaches about 0.1 Msolar yr-1 for 3.5x107 yr. At the final phase of the bar-driven fueling, self-gravity is crucial for the angular momentum transfer of the gas. This is a new mechanism for gas fueling to the vicinity of the SMBH.

Affiliated with

Also associated with

No associations

Rating

The Effect of the Self-Gravity of Gas on Gas Fueling in a Barred Galaxy with a Supermassive Black Hole does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Effect of the Self-Gravity of Gas on Gas Fueling in a Barred Galaxy with a Supermassive Black Hole, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Effect of the Self-Gravity of Gas on Gas Fueling in a Barred Galaxy with a Supermassive Black Hole will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1253263