Four-Color and Hβ Photometry of Stars in the Galactic Cluster NGC 6087

Authors

Edward G. Schmidt, University of Nebraska at LincolnFollow

Date of this Version

2-1980

Comments

Published in THE ASTRONOMICAL JOURNAL VOLUME 85, NUMBER 2 FEBRUARY 1980, pp. 158-160. Copyright 1980 American Astronomical Society. Used by permission.

Abstract

Four-color and Hβ photometry has been obtained for 16 stars in the open cluster NGC 6087. Based on this photometry the membership of these stars in the cluster is discussed. Using stars which appear to be members a color excess of E(b – y) = 0^m.23 and a distance modulus of (V₀ – M_v) = 9^m.60 are derived. This distance modulus is about 0^m.4 less than previous values and indicates a lower luminosity for the Cepheid member, S Nor, than is currently accepted.