Photoelectric UBV observations of the open cluster Berkeley 11

Details Photoelectric UBV observations of the open cluster Berkeley 11 Photoelectric UBV observations of the open cluster Berkeley 11

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26as...41..211j&link_type=abstract

Astronomy and Astrophysics Supplement Series, vol. 41, Aug. 1980, p. 211-214. Research supported by the Natural Sciences and En

Astronomy and Astrophysics

Astrophysics

3

Hydrogen Clouds, Open Clusters, Stellar Spectrophotometry, Ubv Spectra, Color-Magnitude Diagram, Electrophotometers, Hertzsprung-Russell Diagram, Star Distribution

Scientific paper

Photoelectric results, V, (B-V) and (U-B) are presented for 22 stars of the Berkeley 11 compact open cluster. The cluster lies 2.2 plus or minus 0.2 kpc from the sun with a reddening of E(B-V) equal to 0.96 plus or minus 0.66 (s.d.); its linear diameter is 3.5 pcs (5.4 arc min). A two-color plot, a color-magnitude diagram and the results of star counts are presented. On the basis of its bluest members the cluster is found to have an earliest spectral type of approximately b4 and an age of about 3 x 10 to the 7th years.

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