3 years ago

The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. XIII. ACS/WFC Parallel-Field Catalogues.

S. Ortolani, A. P. Milone, G. Piotto, V. Granata, A. Cunial, J. Anderson, R. P. van der Marel, D. Nardiello, L. R. Bedin, T. M. Brown, M. Simioni, A. Aparicio, E. Vesperini, A. Bellini, S. Cassisi

As part of the Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters, 110 parallel fields were observed with the Wide Field Channel of the Advanced Camera for Surveys, in the outskirts of 48 globular clusters, plus the open cluster NGC 6791. Totalling about $0.3$ square degrees of observed sky, this is the largest homogeneous Hubble Space Telescope photometric survey of Galalctic globular clusters outskirts to date. In particular, two distinct pointings have been obtained for each target on average, all centred at about $6.5$ arcmin from the cluster centre, thus covering a mean area of about $23\,{\rm arcmin^{2}}$ for each globular cluster. For each field, at least one exposure in both F475W and F814W filters was collected. In this work, we publicly release the astrometric and photometric catalogues and the astrometrised atlases for each of these fields.

Publisher URL: http://arxiv.org/abs/1801.07445

DOI: arXiv:1801.07445v1

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