Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988kfnt....4...80k&link_type=abstract
Kinematika i Fizika Nebesnykh Tel (ISSN 0233-7665), vol. 4, July-Aug. 1988, p. 80-87. In Russian.
Astronomy and Astrophysics
Astronomy
3
Astronomical Photometry, Open Clusters, Stellar Motions, Stellar Spectra, Background Radiation, Cosmic Dust, Interstellar Extinction, Photoabsorption, Star Formation
Scientific paper
The incompatibility of the kinematic parameters of certain stars (probable members of the cluster NGC 6823) with their photometric and spectral characteristics is shown. The presence of these stars in the cluster explains the intense differential absorption and the variability of the coefficient R of the transition from selective to total absorption. It could also explain erroneous determinations of the physical characteristics of the cluster. The anomalous reddening of the O-B3 stars of the Vul OB 1 association is found to be due to the presence of dark dust clouds in the star formation region. The distance to the cluster, which is closely connected with the association and the star formation region, is 2.2 kpc.
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