The shape of rotation curves: models vs. observations

Details The shape of rotation curves: models vs. observations The shape of rotation curves: models vs. observations

2002-03-09

arxiv.org/abs/astro-ph/0203143v1

Astronomy and Astrophysics

Astrophysics

8 pages, 3 figures included. To appear in "Galaxies: the Third Dimension", eds. M. Rosado, L. Binette, L. Arias, ASP Conferenc

Scientific paper

We discuss the shape and decomposition of rotation curves (RCs) of galaxies formed within growing cold dark matter halos. The outer RC shape correlates mainly with the surface brightness (SB), the luminous mass fraction, fd, and the bulge fraction. In order the shapes of RC depend significantly on luminosity, fd should be a strong function of mass (feedback). For the preferred values of fd (\lesssim 0.03), the high SB models can be maximum disks only when the halos have a shallow core. The low SB models are sub-maximum disks. The residuals of the baryonic Tully-Fisher (TF) and disk mass-radius relations show a clear anti-correlation among them, but when one passes to the TF and luminosity-radius relations, the anti-correlation almost disappears. Therefore, the observed lack of correlation among the residuals of the last two relations should not be interpreted as an evidence of sub-maximal disks.

Affiliated with

Also associated with

No associations

Rating

The shape of rotation curves: models vs. observations 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 The shape of rotation curves: models vs. observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The shape of rotation curves: models vs. observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-187029