Color-magnitude diagrams for six metal-rich, low-latitude globular clusters

Details Color-magnitude diagrams for six metal-rich, low-latitude globular clusters Color-magnitude diagrams for six metal-rich, low-latitude globular clusters

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988aj.....96..588a&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 96, Aug. 1988, p. 588-634, 796-804.

Astronomy and Astrophysics

Astronomy

72

Astronomical Photometry, Color-Magnitude Diagram, Globular Clusters, Horizontal Branch Stars, Blue Stars, Charge Coupled Devices, Giant Stars, Metallicity, Milky Way Galaxy, Stellar Color

Scientific paper

Colors and magnitudes for stars on CCD frames for six metal-rich, low-latitude, previously unstudied globular clusters and one well-studied, metal-rich cluster (47 Tuc) have been derived and color-magnitude diagrams have been constructed. The photometry for stars in 47 Tuc are in good agreement with previous studies, while the V magnitudes of the horizontal-branch stars in the six program clusters do not agree with estimates based on secondary methods. The distances to these clusters are different from prior estimates. Redding values are derived for each program cluster. The horizontal branches of the program clusters all appear to lie entirely redwards of the red edge of the instability strip, as is normal for their metallicities.

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