Gillian Knapp

Old-Population Hypervelocity Stars from the Galactic Center: Limits from the SDSS (2008)

Kollmeier, Juna A., Gould, Andrew, Knapp, Gillian, Beers, Timothy C.

We present limits on the ejection of old-population HVS from a sample of over 290,000 stars selected from the SDSS. We derive the speed at the solar circle from the measured positions and radial...

Cold Gas and Star Formation in Elliptical Galaxies (2007)

Gillian Knapp

. Elliptical galaxies outside dense clusters are observed to contain small amounts (relative to spiral galaxies) of cold interstellar gas. This review discusses the atomic gas, the molecular gas, and...