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The ACS Survey of Galactic Globular Clusters. VII. Relative Ages
Antonio Marin-Franch, Antonio Aparicio, Giampaolo Piotto +13
The ACS Survey of Galactic Globular Clusters is a Hubble Space Telescope (HST) Treasury program designed to provide a new large, deep and homogeneous photometric database. Based on…
The Ages of Globular Clusters in NGC 4365 Revisited with Deep HST Observations
Arunav Kundu, Stephen E. Zepf, Maren Hempel +6
We present new Hubble Space Telescope (HST)-NIC3, near-infrared H-band photometry of globular clusters (GC) around NGC 4365 and NGC 1399 in combination with archival HST-WCPC2 and…
VLT Spectroscopy of Globular Cluster Systems, II. Spectroscopic Ages, Metallicities, and [alpha/Fe] Ratios of Globular Clusters in Early-Type Galaxies
Thomas H. Puzia, Markus Kissler-Patig, Daniel Thomas +5
An analysis of ages, metallicities, and [alpha/Fe] ratios of globular cluster systems in early-type galaxies is presented, based on Lick index measurements summarized in Puzia et a…
VLT Spectroscopy of Globular Cluster Systems, I. The Photometric and Spectroscopic Dataset
Thomas H. Puzia, Markus Kissler-Patig, Daniel Thomas +6
We present Lick line-index measurements of extragalactic globular clusters in seven early-type galaxies (NGC 1380, 2434, 3115, 3379, 3585, 5846, and 7192) with different morphologi…
Extragalactic Globular Clusters in the Near-Infrared: V. IC 4051 and NGC 3311
M. Hempel, D. Geisler, D. W. Hoard +1
We present the results of combined optical and near-infrared photometry for the globular cluster systems of the giant ellipticals IC 4051 and NGC 3311. We use the reduced age-metal…
Extragalactic Globular Clusters in the Near Infrared: IV. Quantifying the Age Structure using Monte-Carlo Simulations
Maren Hempel, Markus Kissler-Patig
In previous papers of the series we used a combination of optical and near-infrared colours to derive constraints on the relative age structure in globular cluster systems. Here, w…