DOES LOW SURFACE BRIGHTNESS MEAN LOW-DENSITY

Authors
DEBLOK WJG MCGAUGH SS
Citation
Wjg. Deblok et Ss. Mcgaugh, DOES LOW SURFACE BRIGHTNESS MEAN LOW-DENSITY, The Astrophysical journal, 469(2), 1996, pp. 89-92
Citations number
18
Categorie Soggetti
Astronomy & Astrophysics
Journal title
The Astrophysical journal → ACNP
ISSN journal
0004637X
Volume
469
Issue
2
Year of publication
1996
Part
2
Pages
89 - 92
Database
ISI
SICI code
0004-637X(1996)469:2<89:DLSBML>2.0.ZU;2-K
Abstract
We compare the dynamical properties of two galaxies at identical posit ions on the Tully-Fisher relation, but with different surface brightne sses. We find that the low surface brightness galaxy UGC 128 has a hig her mass-to-light ratio, and yet has lower mass densities than the hig h surface brightness galaxy NGC 2403. This is true for the gas surface density, the stellar surface density, and the total mass density.