Galaxy merging, the Fundamental Plane of elliptical galaxies, and the Mbh-sigma relation

Details Galaxy merging, the Fundamental Plane of elliptical galaxies, and the Mbh-sigma relation Galaxy merging, the Fundamental Plane of elliptical galaxies, and the Mbh-sigma relation

2003-02-20

arxiv.org/abs/astro-ph/0302423v1

Mon.Not.Roy.Astron.Soc. 342 (2003) 501

Astronomy and Astrophysics

Astrophysics

14 pages, 6 figures, MNRAS accepted

Scientific paper

10.1046/j.1365-8711.2003.06554.x

We explore the effects of dissipationless merging on the Fundamental Plane of elliptical galaxies by using a N-body code based on a new, high performance numerical scheme (Dehnen 2002). We investigate the extreme cases of galaxy growth by equal mass merging and accretion of small stellar systems; in a subset of simulations we also consider the presence of dark matter halos around the merging galaxies. Curiously, we found that the Fundamental Plane is preserved by major merging, while in the accretion scenario its edge--on thickness is only marginally reproduced, with substantial thickening in the case of merging with low angular momentum. We also found that both the Faber-Jackson and Kormendy relations are not reproduced by the simulations. Finally, we discuss the implications of our results for the origin of the Mbh-sigma and Magorrian relations. We found that dissipationless merging is unable to reproduce the Mbh-sigma relation, if Mbhs add linearly (while the Magorrian relation is nicely reproduced); on the contrary a black hole merging with substantial emission of gravitational waves reproduces the Mbh-sigma relation but fails at reproducing the Magorrian relation. [Abridged]

Affiliated with

Also associated with

No associations

Rating

Galaxy merging, the Fundamental Plane of elliptical galaxies, and the Mbh-sigma relation 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 Galaxy merging, the Fundamental Plane of elliptical galaxies, and the Mbh-sigma relation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Galaxy merging, the Fundamental Plane of elliptical galaxies, and the Mbh-sigma relation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-723710