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Age and Metallicity Distribution of the Galactic Bulge from Extensive Optical and Near-IR Stellar Photometry
M. Zoccali, A. Renzini, S. Ortolani +7
We present a new determination of the metallicity distribution, age, and luminosity function of the Galactic bulge stellar population. By combining near-IR data from the 2MASS surv…
HST/WFPC2 proper motions in two bulge fields: kinematics and stellar population of the Galactic bulge
Konrad Kuijken, R. Michael Rich
We report proper motion dispersions for stars in the direction of two fields of the Galactic bulge, using HST/WFPC2 images taken six years apart. Our two fields are Baade's Window…
HST color-magnitude diagrams of 74 galactic globular clusters in the HST F439W and F555W bands
G. Piotto, I. R. King, S. G. Djorgovski +9
We present the complete photometric database and the color-magnitude diagrams for 74 Galactic globular clusters observed with the HST/WFPC2 camera in the F439W and F555W bands. A d…
The Lower Main Sequence and Mass Function of the Globular Cluster Messier 4
Harvey B. Richer, James Brewer, Gregory G. Fahlman +9
The deepest optical image ever in a globular star cluster, a Hubble Space Telescope (HST) 123 orbit exposure in a single field of Messier 4, was obtained in 2 filters (F606W, F814W…