G. Huestamendia, Gabriel del Rio, J. C. Mermilliod
Abstract
La photometrie UBV de 34 etoiles de l'amas NGC 436 et 27 etoiles de l'amas NGC 637 est presentee. La distance, l'âge et le rougissement des amas sont determines.
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La photometrie UBV de 34 etoiles de l'amas NGC 436 et 27 etoiles de l'amas NGC 637 est presentee. La distance, l'âge et le rougissement des amas sont determines.
Key concepts: Physics, Photometry (optics), Open cluster, Cassiopeia A, Astrophysics, Astronomy, Photoelectric effect, Cluster (spacecraft)