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arXiv · 2107.08726

The HST large programme on omega Centauri -- IV. catalogue of two external fields

M. Scalco·A. Bellini·L. R. Bedin·J. Anderson·P. Rosati·M. Libralato·M. Salaris·E. Vesperini·D. Nardiello·D. Apai·A. J. Burgasser·R. Gerasimov·.
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Abstract

In the fourth paper of this series, we present -- and publicly release -- the state-of-the-art catalogue and atlases for the two remaining parallel fields observed with the Hubble Space Telescope for the large programme on omega Centauri. These two fields are located at ~12' from the centre of the globular cluster (in the West and South-West directions) and were imaged in filters from the ultraviolet to the infrared. Both fields were observed at two epochs separated by about 2 years that were used to derive proper motions and to compute membership probabilities.

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M. Scalco, A. Bellini, L. R. Bedin, J. Anderson, P. Rosati, M. Libralato, M. Salaris, E. Vesperini, D. Nardiello, D. Apai, A. J. Burgasser, R. Gerasimov, .. 2021-07-19. The HST large programme on omega Centauri -- IV. catalogue of two external fields. https://doi.org/10.1093/mnras%2Fstab1476

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