Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apjs...90...31p&link_type=abstract
Astrophysical Journal Supplement Series, vol. 90, no. 1, p. 31-82
Astronomy and Astrophysics
Astrophysics
67
Age Factor, Astronomical Maps, Astronomical Photometry, Cassiopeia A, Color-Magnitude Diagram, Interstellar Extinction, Open Clusters, Star Formation, Astronomical Observatories, Charge Coupled Devices, Data Reduction, Optical Filters, Telescopes
Scientific paper
We have obtained charge coupled device (CCD) photometry, in the UBV system, for 23 open clusters in order to explore the star formation history of the Cassiopeia region of the Perseus spiral arm of our Galaxy. Magnitudes and colors of 35,788 stars were measured, making this the most comprehensive, homogeneous single study of open cluster properties in one part of the Galaxy. This paper presents an atlas of open cluster photometry that serves as the database for an investigation of cluster properties such as their ages, distances, reddenings, sizes, and richnesses. This information provides insight into the spatial and temporal formation sequence of the clusters and allows an investigation of the stellar content of the clusters to be undertaken.
Janes Kenneth A.
Phelps Randy Lee
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