16 papers · 1 filter
Photometric binaries in fifty Globular Clusters
A. P. Milone, G. Piotto, L. R. Bedin +1
The HST/ACS Survey of Galactic globular clusters (GGCs) is a HST Treasury project aimed at obtaining high precision photometry in a large sample of globular clusters. The homogeneo…
BVI Photometry and the Luminosity Function of the Globular Cluster M92
N. E. Q. Paust, B. Chaboyer, A. Sarajedini
We present new BVI ground-based photometry and VI space-based photometry for the globular cluster M92 (NGC 6341) and examine luminosity functions in B, V, and I containing over 50,…
The ACS Survey of Galactic Globular Clusters. I. Overview and Clusters Without Previous HST Photometry
Ata Sarajedini, L. Bedin, B. Chaboyer +10
We present the first results of a large ACS Survey of Galactic globular clusters. This Hubble Space Telescope (HST) Treasury project is designed to obtain photometry with S/N > ~10…
The Stellar Populations of M33's Outer Regions III: Star Formation History
Michael K. Barker, Ata Sarajedini, Doug Geisler +2
We present a detailed analysis of the star formation history (SFH) of three fields in M33 located ~ 4 - 6 visual scale lengths from its nucleus. These fields were imaged with the A…
The Stellar Populations of M33's Outer Regions II: Deep ACS Imaging
Michael K. Barker, Ata Sarajedini, Doug Geisler +2
Studying the stellar populations in the outskirts of spiral galaxies can provide important constraints on their structure, formation, and evolution. To that end, we present VI phot…
Near Infrared Survey of Populous Clusters in the LMC: Preliminary Results
A. J. Grocholski, A. Sarajedini, K. A. G. Olsen +1
We report preliminary results from our near-infrared JHK survey of star clusters in the LMC. The primary goals of the survey are to study the three-dimensional structure and distan…