The <i>HST</i> large programme on ω Centauri – IV. Catalogue of two external fields
M. Scalco, Andrea Bellini, L. R. Bedin, Jay Anderson, P. Rosati, Mattia Libralato, M. Salaris, Enrico Vesperini, D. Nardiello, Dániel Apai, Adam J. Burgasser, Roman Gerasimov
Abstract
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 ω Centauri. These two fields are located at ∼12 arcmin 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 yr that were used to derive proper motions and to compute membership probabilities.
Topics & Concepts
PhysicsGlobular clusterHubble space telescopeAstrophysicsAstronomyCluster (spacecraft)Series (stratigraphy)StarsPaleontologyComputer scienceBiologyProgramming languageStellar, planetary, and galactic studiesAstro and Planetary ScienceAstronomy and Astrophysical Research