Does low surface brightness mean low surface density?
Astrophysics
2009-10-28 v1
Abstract
We compare the dynamical properties of two galaxies at identical positions on the Tully-Fisher relation, but with different surface brightnesses. We find that the low surface brightness galaxy UGC 128 has a higher mass-to-light ratio, and yet has lower mass densities than the high surface brightness galaxy NGC 2403. This is true for the gas surface density, the stellar surface density, and the total mass density.
Keywords
Cite
@article{arxiv.astro-ph/9607042,
title = {Does low surface brightness mean low surface density?},
author = {W. J. G. de Blok and S. S. McGaugh},
journal= {arXiv preprint arXiv:astro-ph/9607042},
year = {2009}
}
Comments
10 pages, including 2 postscript figures, uses aas2pp4.sty, accepted for publication in Astrophysical Journal Letters