NGC 7039

Number of stars per data source

	Reference    5 :    2 stars
	Reference   44 :    1 star
	Reference  398 :   19 stars
	Reference  504 :    1 star

5: Cameron R.C.; (1966) Georgetown Obs. Monogr. no. 21; An investigation of the magnetic and related stars through narrow-band photometry
44: Crawford D.L., Barnes J.V., Golson J.C.; (1971) Astron. J. 76, 1058; Four-color and Hbeta photometry for bright B-type stars in the northern hemisphere; 1971AJ.....76.1058C
398: Schneider H.; (1987) Astron. Astrophys. Suppl. 67, 545; Stromgren and Hbeta photometry of early type stars in northern open clusters. I NGC 7039, NGC 7063; 1987A&AS...67..545S
504: Olsen E.H.; (1993) Astron. Astrophys. Suppl. 102, 89; Stromgren four-colour uvby photometry of G5-type HD stars brighter than mv = 8.6; 1993A&AS..102...89O