We recently discovered an apparently new class of pulsating Extreme Horizontal Branch (EHB) star in ω Cen. Tightly clustered around ˜50,000 K, these H-rich sdO...
A survey of low density early-type galaxies in low density environments.
We have completed a survey of early-type galaxies in a region covering 700 sq. degrees with cz -20 that satisfy our isolation criteria. The sample galaxies obey...
A survey of radio jets in AGN with Chandra and HST
We report the results of an HST survey of 17 AGN, selected solely for having a well developed radio jet bright enough to be detectable with HST for a normal...
A Survey of the ISM in Elliptical Galaxies. I. The Ionized Gas
We present the results of an optical imaging survey of 73 luminous early-type galaxies directed to study the properties of their interstellar medium. We have...