NGC 7039

Number of stars per data source

	Reference    5 :    2 stars
	Reference   44 :    1 star
	Reference  119 :    5 stars
	Reference  398 :   19 stars

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
119: Deutschman W.A., Davis R.J., Schild R.E.; (1976) Astrophys. J. Suppl. 30, 97; The galactic distribution of interstellar absorption as determined from the Celescope catalog of ultraviolet stellar observations and a new catalog of UBV, Hbeta photoelectric observations; 1976ApJS...30...97D
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