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CCD Stromgren UVBY photometry of the young clusters NGC 1893, NGC 457, Berkeley 94 and Bochum 1
Stromgren uvby colors are presented for 150 stars in fields containingthe young galactic clusters NGC 1893, NGC 457, Berkeley 94, and Bochum1. Cluster members are identified via inspection of color magnitudediagrams and reddening-free indices, and intrinsic colors arecalculated. Members of Be 94 exhibit a substantial spread of reddenings,which because of the compactness of this cluster may be due tocircumstellar material. A blue straggler is identified in NGC 457.Assuming a standard galactic reddening law, the distances to theclusters are 4.8 kpc for NGC 1893, 2.5 kpc for NGC 457, 3.5 kpc for Be94, and 4.8 kpc for Bo 1.
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