NGC 3680

Number of stars per data source

	Reference   19 :   87 stars
	Reference  119 :  310 stars
	Reference  224 :  163 stars
	Reference  358 :  466 stars

19: Anthony-Twarog B.J., Twarog B.A., Shodan S.; (1989) Astron. J. 98, 1634; CCD uvby photometry of the bimodal main-sequence cluster NGC 3680; 1989AJ.....98.1634A
119: Nordstrom B., Andersen J., Andersen M.I.; (1996) Astron. Astrophys. Suppl. 118, 407; Critical tests of stellar evolution in open clusters. I. New photometry and radial velocities for NGC 3680; 1996A&AS..118..407N
224: Bruntt H., Frandsen S., Kjeldsen H., Andersen M.I.; (1999) Astron. Astrophys. Suppl. 140, 135; Stromgren photometry of the open clusters NGC 6134 and ngc 3680; 1999A&AS..140..135B
358: Anthony-Twarog B.J., Twarog B.A.; (2004) Astron. J. 127, 1000; uvby CaHbeta CCD photometry of clusters. IV. Solving the riddle of NGC 3680; 2004AJ....127.1000A