The Baryon Fraction Distribution and the Tully-Fisher Relation
arXiv:astro-ph/9711119
Abstract
A number of observations strongly suggest that the baryon fraction is not a universal constant. One obvious interpretation is that there is some distribution of Fb, and the different observations sample different portions of the distribution. However, the small intrinsic scatter in the Tully-Fisher relation requires that the baryon fraction be very nearly universal. It is not easy to resolve this paradox in the framework of the standard picture.
3 pages latex, contribution to Santa Cruz workshop Galactic Halos