The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. VIII. Preliminary Public Catalog Release
M. Soto, A. Bellini, J. Anderson, G. Piotto, L. R. Bedin, R. P. van, der Marel, A. P. Milone, T. M. Brown, A. M. Cool, I. R. King, A. Sarajedini,, V. Granata, S. Cassisi, A. Aparicio, S. Hidalgo, S. Ortolani, D. Nardiello

TL;DR
This paper presents a preliminary public catalog from the Hubble Space Telescope UV Legacy Survey of 57 Galactic Globular Clusters, enabling studies of multiple stellar populations through homogeneous 5-band photometry.
Contribution
It introduces an automated procedure for high-quality photometry on UV observations and releases the first uniform catalog of 57 clusters from the survey.
Findings
Catalog includes 57 clusters with UV and optical data
Method enables identification of multiple stellar populations
Provides a foundation for future detailed analyses
Abstract
The Hubble Space Telescope (HST) UV Legacy Survey of Galactic Globular Clusters (GO-13297) has been specifically designed to complement the existing F606W and F814W observations of the Advanced Camera for Surveys (ACS) Globular Cluster Survey (GO-10775) by observing the most accessible 47 of the previous survey's 65 clusters in three WFC3/UVIS filters F275W, F336W, and F438W. The new survey also adds super-solar metallicity open cluster NGC 6791 to increase the metallicity diversity. The combined survey provides a homogeneous 5-band data set that can be used to pursue a broad range of scientific investigations. In particular, the chosen UV filters allow the identification of multiple stellar populations by targeting the regions of the spectrum that are sensitive to abundance variations in C, N, and O. In order to provide the community with uniform preliminary catalogs, we have devised…
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