CCD photometry of NGC 2257 RR Lyrae Virtual Observatory Resource

Authors

1. Walker A.R.

Published by

CDS

Abstract

B and V band CCD photometry is used to study 33 cluster and nine field RR Lyrae variables near the LMC cluster, NGC 2257. It is found that the mean magnitudes for the two groups differ by 0.17 mag. The cluster and field variables both have an Fe/H abundance ratio of -1.8+/-0.1. The results are compared used to compare NGC 2257 with galactic globular clusters, showing that NGC 2257 is indistinguishable from its local counterparts.

Keywords

1. variable-stars
2. ccd-photometry

Bibliographic source Bibcode

1989AJ.....98.2086W

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https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/98/2086

IVOA Identifier IVOID

ivo://CDS.VizieR/J/AJ/98/2086

Document Object Identifer DOI

doi:10.26093/cds/vizier.50982086

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https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/98/2086
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http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/98/2086

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