NGC 3680
Number of stars per data source
Reference 224 : 143 stars
Reference 358 : 428 stars
References
- 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