The Stars in Camelopardalis OB1: Their Distance and Evolutionary History

Astronomy and Astrophysics – Astronomy

Scientific paper

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Stars: Color-Magnitude Diagrams, Open Clusters And Associations: Individual (Camelopardalis Ob1), Stars: Distances

Scientific paper

An investigation is undertaken of the optically identified Population I objects in the Cam OB1 region. From the analysis of these objects it is determined that the distance to the Cam OB1 stars is 975+/-90 pc. A theoretical H-R diagram for the Cam OB1 stars reveals that star formation has been going on in the region for 1×106-1×108 yr. At present, the most active site of star formation is Cam R1, which shows an asymmetry in the distribution of optically identified Population I objects. The majority of the pre-main-sequence stars lie in the northern half of the association, while the main-sequence stars and evolved stars lie in the southern half.

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