Near-infrared photometric study of open star cluster IC 1805

Astronomy and Astrophysics – Astronomy

Scientific paper

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Infrared Photometry, Open Clusters, Color-Color Diagram, Early Stars, Infrared Astronomy Satellite, Interstellar Extinction, Ionized Gases

Scientific paper

The JHK magnitudes of 29 stars in the region of open star cluster IC 1805 were measured. These, and the existing infrared and optical observations, indicate a normal interstellar extinction law in the direction of the cluster. Further, most of the early-type stars have near-infrared fluxes as expected from their spectral types. Patchy distribution of ionized gas and dust appears to be the cause of nonuniform extinction across the cluster face.

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