NGC 3680

Number of stars per data source

	Reference   71 :    5 stars
	Reference  128 :   60 stars
	Reference  166 :  355 stars
	Reference  186 :  203 stars
	Reference  250 :  177 stars

71: Mermilliod J.-C.; (1988); Positions measured with the Hipad tablet
128: Lasker B.M., Russel J.N., Jenkner H., Sturch C.R., McLean B.J., Shara M.M.; (1990) Astron. J. 99, 2019; The HST guide star catalogue, version 1.0; 1990AJ.....99.2019L
166: Platais V.K., Girard T.M., Platais I., van Altena W.F., Ianna P.A., Cannon R.D.; (1995) Astron. J. 109, 672; A proper-motion study of the open cluster NGC 3680; 1995AJ....109..672P
186: 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
250: Hawley S.L., Tourtellot J.G., Reid I.N.; (1999) Astron. J. 117, 1341; Low-mass stars in open clusters. I. NGC 2516 and NGC 3680; 1999AJ....117.1341H