Made-to-measure galaxy models - II Elliptical and Lenticular Galaxies

Details Made-to-measure galaxy models - II Elliptical and Lenticular Galaxies Made-to-measure galaxy models - II Elliptical and Lenticular Galaxies

2012-01-04

arxiv.org/abs/1201.0951v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

14 pages, 8 figures and 5 tables

Scientific paper

We take a sample of 24 elliptical and lenticular galaxies previously analysed by the SAURON project using three-integral dynamical models created with Schwarzschild's method, and re-analyse them using the made-to-measure (M2M) method of dynamical modelling. We obtain good agreement between the two methods in determining the dynamical mass-to-light (M/L) ratios for the galaxies with over 80% of ratios differing by < 10% and over 95% differing by < 20%. We show that (M/L)_M2M is approximately equal to (M/L)_Sch. For the global velocity dispersion anisotropy parameter delta, we find similar values but with fewer of the made-to-measure models tangentially anisotropic by comparison with their SAURON Schwarzschild counterparts. Our investigation is the largest comparative application of the made-to-measure method to date.

Affiliated with

Also associated with

No associations

Rating

Made-to-measure galaxy models - II Elliptical and Lenticular 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 Made-to-measure galaxy models - II Elliptical and Lenticular Galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Made-to-measure galaxy models - II Elliptical and Lenticular Galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-156879