On the non universality of surface density of galaxies

Details On the non universality of surface density of galaxies On the non universality of surface density of galaxies

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aasp....2...53d&link_type=abstract

Advances in Astronomy and Space Physics, Vol. 2, p.53-55

Physics

Space Physics

Cosmology: Theory, Dark Matter, Large-Scale Structure Of Universe

Scientific paper

We studied the correlation between the central surface density of dark matter haloes and the halo core radius of galaxy and galaxy recently studied on a wide range of scales. For this aim we used the secondary infall model, that we previously published, to get the halo density profile taking into account the effect of ordered and random angular momentum, dynamical friction, and adiabatic contraction of the dark matter due to the baryons collapse. We found that the column density within the halo characteristic radius r_* is not a universal quantity as claimed by other authors, but it correlates with the halo mass M_{200}. The scatter in the slope of the S-M relation is 0.16 ± 0.05, leaving small room for the possibility of a constant surface density.

Affiliated with

Also associated with

No associations

Rating

On the non universality of surface density of 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 On the non universality of surface density of galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the non universality of surface density of galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1364278