NGC 225

Number of stars per data source

	Reference   69 :    1 star
	Reference  107 :    2 stars

69: Schmidt E.G.; (1984) Astrophys. J. Suppl. 55, 455; Yellow giants in young clusters. I. Photometric observations; 1984ApJS...55..455S
107: Claria J.J., Piatti A.E., Osborn W.; (1996) Publ. Astron. Soc. Pacific 108, 672; DDO metal abundances of high-luminosity late-type stars in galactic open clusters; 1996PASP..108..672C