NGC 2439

Number of stars per data source

	Reference  164 :    1 star
	Reference  310 :    2 stars
	Reference  334 :    8 stars
	Reference  345 :    1 star
	Reference  463 :    1 star

164: Gronbech B., Olsen E.H.; (1977) Astron. Astrophys. Suppl. 27, 443; Photoelectric Hbeta photometry for bright O to G0 type stars south of declination +10; 1977A&AS...27..443G
310: Eggen O.J.; (1980) Astrophys. J. 238, 919; VY Carinae, S Normae, and photometric luminosities for bright giants and supergiants of types G and K; 1980ApJ...238..919E
334: Eggen O.J.; (1983) Astron. J. 88, 386; Pseudocepheids. I. R Puppis, HR 4441, HR 4511, and AI CMi; 1983AJ.....88..386E
345: Olsen E.H.; (1983) Astron. Astrophys. Suppl. 54, 55; Four-colour ubvy and Hbeta photometry of A5 to G0 stars brighter than 8.3m; 1983A&AS...54...55O
463: Gray R.O., Olsen E.H.; (1991) Astron. Astrophys. Suppl. 87, 541; The calibration of the Stromgren photometric system for A, F and early G supergiants. I. The observational data; 1991A&AS...87..541G