Collinder 197

Number of stars per data source

	Reference  138 :    1 star
	Reference  190 :    1 star
	Reference  547 :    1 star

138: Vogt N., Moffat A.F.J.; (1975) Astron. Astrophys. 45, 405; A comparison of photometric and kinematic distances for southern H II regions; 1975A&A....45..405V
190: Klare G., Neckel T.; (1977) Astron. Astrophys. Suppl. 27, 215; UBV Hbeta and polarization measurements of 1660 southern OB stars; 1977A&AS...27..215K
547: Winkler H.; (1997) Mon. Not. R. Astron. Soc. 287, 481; Red and infrared colours of B stars and the reddening law in the Galaxy; 1997MNRAS.287..481W