Integrated photometry of globular clusters in the Vilnius system

Details Integrated photometry of globular clusters in the Vilnius system Integrated photometry of globular clusters in the Vilnius system

Feb 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983azh....60...44z&link_type=abstract

(Astronomicheskii Zhurnal, vol. 60, Jan.-Feb. 1983, p. 44-52) Soviet Astronomy (ISSN 0038-5301), vol. 27, Jan.-Feb. 1983, p. 26-

Astronomy and Astrophysics

Astronomy

1

Astronomical Photometry, Globular Clusters, Spectral Energy Distribution, Giant Stars, Hertzsprung-Russell Diagram, Horizontal Branch Stars, Interstellar Extinction, Metallicity, Stellar Color

Scientific paper

Integrated color indices measured in the Vilnius photometric system and color excesses are given for 39 globular clusters. The integrated spectral type is not a sufficient criterion for globular clusters to have identical intrinsic colors. A study is made of the relation between the integrated color indices and parameters of the H-R diagram: the Dickens morphological type D of the horizontal branch and the slope S of the giant branch. The integrated colors of clusters with a blue horizontal branch show no correlation with either D or S. The remaining clusters have large color indices mainly because their stars are redistributed along the horizontal branch.

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