NGC 6087

Number of stars per data source

	Reference  137 :    1 star
	Reference  253 :   16 stars
	Reference  463 :    1 star
	Reference  470 :    1 star

137: Gronbech B., Olsen E.H.; (1976) Astron. Astrophys. Suppl. 25, 213; Four colour uvby photometry for bright O to G0 type stars south of declination +10; 1976A&AS...25..213G
253: Schmidt E.G.; (1980) Astron. J. 85, 158; Four-color and Hbeta photometry of stars in the galactic cluster NGC 6087; 1980AJ.....85..158S
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
470: Knude J.; (1992) Astron. Astrophys. Suppl. 92, 841; uvby Beta observations of 528 type B stars with V between the 8th and 9th magnitude; 1992A&AS...92..841K