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Cepheus Star-Forming Field Revisited
Department of Physics and Astronomy, University of Wisconsin, Oshkosh, USA
Department of Physics and Astronomy, University of Wisconsin, Oshkosh, USA
Department of Physics and Astronomy, University of Wisconsin, Oshkosh, USA
Department of Astronomy, Faculty of Physics, St Kliment Ohridski University of Sofia, Sofia, Bulgaria
- 1 Department of Physics and Astronomy, University of Wisconsin, Oshkosh, USA
- 2 Department of Physics and Astronomy, University of Wisconsin, Oshkosh, USA
- 3 Department of Physics and Astronomy, University of Wisconsin, Oshkosh, USA
- 4 Department of Astronomy, Faculty of Physics, St Kliment Ohridski University of Sofia, Sofia, Bulgaria
International Journal of Astronomy and Astrophysics·Volume 03 (2013)·Pages 472–479·Published 9 October 2013·DOI10.4236/ijaa.2013.34054
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Abstract
We present a photometric investigation in the uvby β system of a 20 ° × 20 ° field centered at galactic coordinates (l, b) = (105 ° , 5 ° ). This region contains a relatively isolated structure of numerous HII regions in the direction of some of the OB associations in Cepheus and Cassiopeia. Photoelectric uvby β data of more than 220 stars of spectral types O-B9 are available for this field and are used to obtain homogeneous distance estimates for a number of prominent stellar groups, among which are the Cep OB2 and Cep OB3 associations and the open clusters NGC 7243 and NGC 7654.
KeywordsOpen Clusters and Associations: Individual (Cep OB2)Open Clusters and Associations: Individual (Cep OB3)Open Clusters and Associations: Individual (NGC 7243)Open Clusters and Associations: Individual (NGC 7654)
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