ar X iv : a st ro - p h / 99 10 24 3 v 1 1 3 O ct 1 99 9 Young Globular Clusters and Dwarf Spheroidals

ar X iv : a st ro - p h / 99 11 43 8 v 1 2 3 N ov 1 99 9 H 2 molecules and cold clouds in cooling flow clusters †

ar X iv : a st ro - p h / 98 10 22 3 v 1 1 4 O ct 1 99 8 Properties of the Neutral ISM in NGC 185 and NGC 205

We describe the properties and kinematics of the neutral gas in the two dwarf elliptical galaxies NGC 185 and NGC 205, companions of M31. The kinematics of the HI suggest that an internal origin of the gas (i.e. stellar mass loss) should be considered, at least in the case of NGC 185. The molecular clouds in these dwarf ellipticals are similar to Galactic giant molecular clouds in many ways. Ho...

ar X iv : a st ro - p h / 99 11 02 3 v 1 2 N ov 1 99 9 Draft for the Astrophysical Journal , February 1 , 2008 The Formation Rate of Blue Stragglers

We investigate the effects of changes in the blue straggler formation rate in globular clusters on the blue straggler distribution in the color-magnitude diagram. We find that the blue straggler distribution is highly sensitive to the past formation rate. Comparing our models to new UBV observations of a region close to the core of 47 Tucanae suggests that this cluster may have stopped forming ...

ar X iv : a st ro - p h / 99 11 15 7 v 1 1 0 N ov 1 99 9 The Specific Frequency of Globular Clusters in Galaxies .

Variations in the number of globular clusters per unit galaxy luminosity, which is the specific frequency, and the mass of globular clusters per unit total available mass, are reviewed. Correlations with galaxy luminosity and morphology, and with the properties of the associated galactic clusters are discussed, as are the color distributions of globular cluster populations. Several models for t...

X iv : a st ro - p h / 99 10 39 8 v 1 2 1 O ct 1 99 9 Searches for HI in the Outer Parts of Four Dwarf Spheroidal Galaxies

Previous searches for atomic gas in our Galaxy's dwarf spheroidal companions have not been complete enough to settle the question of whether or not these galaxies have HI, especially in their outer parts. We present new observations of the dwarf spheroidals Sextans, Leo I, Ursa Minor, and Draco, using the NRAO 140-foot telescope to search much farther in radius than has been done before. The ne...