A direct photometric comparison of M67 and Hyades stars

Autor:	C. Sturch
Rok vydání:	1972
Předmět:	Physics Photometry (optics) Stars Star cluster Space and Planetary Science Astronomy Astronomy and Astrophysics Astrophysics Open cluster
Zdroj:	Publications of the Astronomical Society of the Pacific. 84:666
ISSN:	1538-3873 0004-6280
DOI:	10.1086/129359
Popis:	Photoelectric photometry of stars in M 67 and the Hyades when transformed to the UBV system implies an observational inconsistency of - O" O5 in (U- B) in published values for ffie two clusters. if one accepts this correction, the (U- B), (B- V) diagrams for the two clusters are nearly indistinguishable. An interpretation of the new color indices leads to negligible reddening for M 67 and a mild metal deficiency. Key words: clusters - ultraviolet excess - metal abundance - color excess
Databáze:	OpenAIRE
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