Are ring galaxies the ancestors of giant low surface brightness galaxies?

Details Are ring galaxies the ancestors of giant low surface brightness galaxies? Are ring galaxies the ancestors of giant low surface brightness galaxies?

2009-02-20

arxiv.org/abs/0902.3554v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

4 pages, 6 figures, Astronomische Nachrichten, Vol.329, p.948, proceeding of "Galactic & Stellar Dynamics in the era of high r

Scientific paper

Giant low surface brightness galaxies (GLSBs), such as Malin 1, have unusually large and flat discs. Their formation is a puzzle for cosmological simulations in the cold dark matter scenario. We suggest that GLSBs might be the final product of the dynamical evolution of collisional ring galaxies. In fact, our simulations show that, approximately 0.5-1.5 Gyr after the collision which lead to the formation of a ring galaxy, the ring keeps expanding and fades, while the disc becomes very large (~100 kpc) and flat. At this stage, our simulated galaxies match many properties of GLSBs (surface brightness profile, morphology, HI spectrum and rotation curve).

Affiliated with

Also associated with

No associations

Rating

Are ring galaxies the ancestors of giant low surface brightness galaxies? 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 Are ring galaxies the ancestors of giant low surface brightness galaxies?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Are ring galaxies the ancestors of giant low surface brightness galaxies? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-671067