8 papers · 1 filter
High-resolution rotation curves of LSB galaxies: Mass Models
Erwin de Blok, Stacy McGaugh, Vera Rubin
We present mass models for a sample of 30 high-resolution rotation curves of low surface brightness (LSB) galaxies. We fit both pseudo-isothermal (core-dominated) and Cold Dark Mat…
Baryonic Tully-Fisher Relations
Stacy McGaugh
I describe the disk mass-rotation velocity relation which underpins the familiar luminosity-linewidth relation. Continuity of this relation favors nearly maximal stellar mass-to-li…
Dynamical Constraints on Disk Galaxy Formation
Stacy McGaugh
The rotation curves of disk galaxies exhibit a number of striking regularities. The amplitude of the rotation is correlated with luminosity (Tully-Fisher), the shape of the rotatio…
How Galaxies Don't Form
Stacy McGaugh
I review current theories of disk galaxy formation. All fail in the light of recent data for low surface brightness galaxies. The difficulty stems from the presence of a unique acc…
Optical Galaxy Selection
Stacy McGaugh
Our view of the properties of galaxies is strongly affected by the way in which we survey for them. I discuss some aspects of selection effects and methods to compensate for them.…
The Baryon Fraction Distribution and the Tully-Fisher Relation
Stacy McGaugh, Erwin de Blok
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 differe…