Investigation of the open star cluster NGC 6811

Details Investigation of the open star cluster NGC 6811 Investigation of the open star cluster NGC 6811

Feb 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978azh....55...56b&link_type=abstract

Astronomicheskii Zhurnal, vol. 55, no. 1, 1978, p. 56-61. In Russian.

Astronomy and Astrophysics

Astronomy

2

Open Clusters, Stellar Evolution, Stellar Luminosity, Ubv Spectra, Density Distribution, Electrophotometers, Hertzsprung-Russell Diagram, Main Sequence Stars, Star Distribution

Scientific paper

The luminosity function of the open cluster NGC 6811 was constructed on the basis of UBV photographic photometry of 2000 stars in its neighborhood. The times of the beginning and end of star formation in the cluster were calculated from a study of the variation of the total mass of stars in a unit volume per unit interval of the mass logarithm with the time of stay of stars of given mass on the main sequence. It is found that star formation in NGC 6811 has taken place over 700 m.y. Light absorption, distance to the cluster, cluster dimensions, and distribution of giants on the H-R diagram were redetermined.

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