A color-magnitude diagram for the globular cluster NGC 6535

Details A color-magnitude diagram for the globular cluster NGC 6535 A color-magnitude diagram for the globular cluster NGC 6535

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980aj.....85.1480l&link_type=abstract

Astronomical Journal, vol. 85, Nov. 1980, p. 1480-1485. Research supported by Harvard University

Astronomy and Astrophysics

Astronomy

18

Astronomical Photometry, Color-Magnitude Diagram, Globular Clusters, Hertzsprung-Russell Diagram, Variable Stars, Visual Photometry, Abundance, Cepheid Variables, Colorimetry, Electrophotometry, Interstellar Extinction, Night Sky

Scientific paper

Photometry in B and V of 103 stars in the region of the globular cluster NGC 6535 yields a color-magnitude diagram with a moderately steep giant branch, a steeply sloping blue horizontal branch, and an absence of a red horizontal branch. The apparent distance modulus and the distance from the sun are determined. The color-magnitude diagram morphology indicates moderately low metallicity; the two RR Lyrae variables in the field have magnitudes inappropriate for cluster membership.

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