HST Photometry of the Globular Cluster M4

Details HST Photometry of the Globular Cluster M4 HST Photometry of the Globular Cluster M4

1998-05-14

arxiv.org/abs/astro-ph/9805183v1

Astronomy and Astrophysics

Astrophysics

14 pages, 7 figures, accepted for publication in ApJS

Scientific paper

This paper presents a detailed description of the acquisition and processing of a large body of imaging data for three fields in the globular cluster M4 taken with the Wide Field and Planetary Camera 2 aboard the Hubble Space Telescope. Analysis with the ALLFRAME package yielded the deepest photometry yet obtained for this cluster. The resulting data-set for 4708 stars (positions and calibrated photometry in V, I, and, in two fields, U) spanning approximately six cluster core radii is available on the AAS CD-ROM (or email a request to RAI). The scientific analysis is deferred to three companion papers, which investigate the significant white dwarf population discovered and the main sequence population.

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