NGC 752
Number of stars per data source
Reference 1 : 25 stars
Reference 2 : 8 stars
Reference 3 : 10 stars
References
- 1
- Stromgren B., Perry C.L.
- (1965) Astron. J. 71, 709
- Institute for Advanced Study, Princeton, N. J. second version, unpublished Crawford D.L., Barnes J.V., Faure B.Q., Golson J.C. Photoelectric Hbeta photometry for 1217 stars brighter than V = 6.5 mag
- 1965AJ.....71..709
- 2
- Crawford D.L., Perry C.L.
- (1966) Astron. J. 71, 206
- Four-color and Hbeta photometry of open clusters I. The Hyades
- 1966AJ.....71..206C
- 3
- Crawford D.L., Barnes J.V.
- (1969) Astron. J. 74, 407
- Four-color and Hbeta photometry of open clusters II. Coma and Ursa Major
- 1969AJ.....74..407C