Berkeley 39

Number of stars per data source

	Reference  128 :   11 stars
	Reference  263 :   12 stars
	Reference  485 :   37 stars

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
263: Kaluzny J., Mazur B., Krzeminski W.; (1993) Monthly Notices Roy. Astron. Soc. 262, 49; Discovery of 12 short-period eclipsing binaries in the old open cluster Berkeley 39; 1993MNRAS.262...49K
485: Frinchaboy P.M., Muñoz R.R., Phelps R.L., Majewski S.R., Kunkel W.E.; (2006) Astron. J. 131, 922; Photometry and Spectroscopy of Old, Outer Disk Star Clusters: vdB-Hagen 176, Berkeley 29 and Saurer 1; 2006AJ....131..922F