6 papers
Ages and Metallicities of Globular Clusters in NGC 4472
M. A. Beasley, R. M. Sharples, T. J. Bridges +4
We have derived ages and metallicities from co-added spectra of 131 globular clusters associated with the giant elliptical galaxy NGC 4472. Based upon a calibration with Galactic g…
HST Imaging of Globular Clusters in the Edge--on Spiral Galaxies NGC 4565 and NGC 5907
Markus Kissler-Patig, Keith M. Ashman, Stephen E. Zepf +1
We present a study of the globular cluster systems of two edge-on spiral galaxies, NGC4565 and NGC5907, from WFPC2 images in the F450W and F814W filters. The globular cluster syste…
The Globular Cluster System in the Inner Region of M87
A. Kundu, B. C. Whitmore, W. B. Sparks +3
1057 globular cluster candidates have been identified in a WFPC2 image of the inner region of M87. The Globular Cluster Luminosity Function (GCLF) can be well fit by a Gaussian pro…
Spectroscopy of Globular Clusters in NGC 4472
R. M. Sharples, S. E. Zepf, T. J. Bridges +4
Optical multi-slit spectra have been obtained for 47 globular clusters surrounding the brightest Virgo elliptical NGC 4472 (M49). Including data from the literature, we analyze vel…
Kinematics and Metallicities of Globular Clusters in M104
T. J. Bridges, K. M. Ashman, S. E. Zepf +4
We have obtained spectra for globular cluster candidates in M104 with LDSS-2 on the William Herschel Telescope, confirming 34 objects as M104 globular clusters. We find a cluster v…
The Richness of the Globular Cluster System of NGC 3923: Clues to Elliptical Galaxy Formation
S. E. Zepf, D. Geisler, K. M. Ashman
We present new data on the globular cluster system of the elliptical galaxy NGC 3923 which show that it has the most globular clusters per unit luminosity of any non-cluster ellipt…