5 papers
Galaxy Assembly
Eric F. Bell
In a Lambda CDM Universe, galaxies grow in mass both through star formation and through addition of already-formed stars in galaxy mergers. Because of this partial decoupling of th…
Properties of Dark Matter Halos in Disk Galaxies
Roelof S. de Jong, Susan Kassin, Eric F. Bell +1
We present a simple technique to estimate mass-to-light (M/L) ratios of stellar populations based on two broadband photometry measurements, i.e. a color-M/L relation. We apply the…
The Properties of Spiral Galaxies in Semi-Analytic Galaxy Formation Models
Eric F. Bell, Carlton Baugh, Shaun Cole +2
We examine the present-day galaxy disk colors and star formation rates (SFRs) in the semi-analytic model of Cole et al. (2000). We find that the fiducial model is a good match to K…
Comparing Ultraviolet and H alpha Star Formation Rates
Eric F. Bell, Robert C. Kennicutt
We have used a sample of 43 star-forming galaxies imaged in the far-ultraviolet (FUV) by the UIT supplemented with 33 galaxies observed by FAUST, to explore the consistency of UV a…
Stellar Mass-to-Light Ratios and the Tully-Fisher relation
Roelof S. de Jong, Eric F. Bell
We use spiral galaxy evolution models to argue that there are substantial variations in stellar mass-to-light ratio (M/L) within and among galaxies. Our models show a strong correl…