NGC 6939
Number of stars per data source
Reference 315 : 636 stars
Reference 335 : 997 stars
Reference 356 : 2170 stars
Reference 360 : 17 stars
Reference 495 : 3219 stars
References
- 315
- Rosvick J.M., Balam D.
- (2002) Astron. J. 124, 2093
- CCD observations of the open cluster NGC 6939
- 2002AJ....124.2093R
- 335
- Henden A.
- (2003) ftp://ftp.aavso.org/public/calib/
- Henden field photometry
-
- 356
- Andreuzzi G., Bragaglia A., Tosi M., Marconi G.
- (2004) Mon. Not. R. Astron. Soc. 348, 297
- UBVI photometry of the intermediate-age open cluster NGC 6939
- 2004MNRAS.348..297A
- 360
- Kafka S., Gibbs II D.G., Henden A.A., Honeycutt R.K.
- (2004) Astron. J. 127, 1622
- WIYN open cluster study. XX. Photometric monitoring of the Galactic cluster NGC 6939
- 2004AJ....127.1622K
- 495
- Maciejewski G., Niedzielski A.
- (2007) Astron. Astrophys. 467, 1065
- CCD BV survey of 42 open clusters
- 2007A&A...467.1065M