Description

We present the results of N-body simulations of the accretion of high-density dwarf galaxies by low-density giant galaxies. Both galaxies contain power-law central density cusps and point masses representing supermassive black holes; the ratio of galaxy masses is 3 : 1. The cusp of the dwarf galaxy is always disrupted during the merger, leading to a remnant with a weak power law in the intrinsic density and a “core”in the projected density. Removing both black holes from the giant and dwarf galaxies allows the dwarf galaxy to remain intact and leads to a remnant with a high central density, contrary to what is observed. Our results support the hypothesis than the persistence of low-density cores in giant galaxies following mergers is a consequence of the existence of supermassive central black holes.

Date of creation, presentation, or exhibit

2001

Comments

Also archived in: arXiv:astro-ph/0106358 v1 20 Jun 2001 AND Rutgers Astrophysics Preprint Series No. 319||"The Central kiloparsec of Starbursts and AGN: The La Palma Connection". Proceedings of the Astronomical Society of the Pacific Conference Series. Held at Hotel Hacienda San Jorge, Los Cancajos, La Palma, Spain: 7-11 May 2001. This work was supported by NSF grant AST 00-71099, NASA grants NAG5- 6037 and NAG5-9046, by a fellowship from the Consejo Nacional de Ciencia y Tecnologia de Mexico, and by grant no. MCA00N010N from NCSA. ISBN: 1583810897Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works in February 2014.

Document Type

Conference Proceeding

Department, Program, or Center

School of Physics and Astronomy (COS)

Campus

RIT – Main Campus

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