Does Low Surface Brightness mean Low Density?

Authors

Stacy S. McGaugh, Case Western Reserve UniversityFollow

Author ORCID Identifier

Stacy S. McGaugh

Document Type

Article

Publication Date

7-22-1996

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. © 1996. The American Astronomical Society. All rights reserved.

Keywords

dark matter, galaxies: fundamental parameters, galaxies: individual (NGC 2403, UGC 128), galaxies: kinematics and dynamics, galaxies: spiral, galaxies: structure

Language

English

Publication Title

Astrophysical Journal

Rights

© The American Astronomical Society. All rights reserved. This content is free to access, download, and share. For all other uses, you must obtain permission to reuse content: https://journals.aas.org/article-charges-and-copyright/#AAS_material

Recommended Citation

W. J. G. de Blok and S. S. McGaugh 1996. Does Low Surface Brightness mean Low Density? ApJ 469 L89