NGC 2439

Number of stars per data source

	Reference    2 :    1 star
	Reference    5 :    1 star

References

 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

 5

Cameron R.C.

(1966) Georgetown Obs. Monogr. no. 21

An investigation of the magnetic and related stars through narrow-band photometry