AAS Meeting #193 - Austin, Texas, January 1999
Session 38. Galaxy Clusters
Display, Thursday, January 7, 1999, 9:20am-6:30pm, Exhibits Hall 1

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[38.14] Gravitational Arcs, Globular Clusters, Dwarf Galaxies: Deep Keck Imaging in Dense Cluster Cores

J. P. Blakeslee (Caltech)

We present results from deep R-band imaging in the cores of a half dozen clusters in the redshift range z{\,=\,}0.04-0.07. The clusters are similar to Coma in richness, but display a range of morphological types. The data were obtained with the Low Resolution Imaging Spectrometer on the Keck~II telescope; the fields are 7.5\prime{\times\,}5\prime in size, and the limiting magnitude is typically R \approx 27. All of central cluster galaxies possess extensive systems of globular clusters. We present the luminosity functions and radial number density profiles of the globulars and the resolved dwarf galaxy populations. One cluster in the sample was found to exhibit strong lensing of a distant background galaxy. We discuss this object and further implications of the data set for lensing by low-redshift clusters.

The author(s) of this abstract have provided an email address for comments about the abstract: jpb@astro.caltech.edu

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