VI photometry of Westerlund 1 and 2

We have carried out CCD observations of stars in the region of the open cluster Westerlund 1 through the V and I passbands. The direct images were obtained with the 24-inch telescope of the University of Toronto Southern Observatory situated at Las Campanas Observatory, Chile. After cross-correlating all independent V, (V-I) tables we have obtained a improved set of colour and magnitude values as compared to those based on a single measure.

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Creator Piatti A.E.; Bica E.; Claria J.J.
Publisher CDS
Publication Year 1998
OpenAccess true
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Resource Type Service
Discipline Astrophysics and Astronomy