NGC 6939

Number of measures per data source

	Reference  341 :   38 measures
	Reference  342 :   11 measures
	Reference  369 :    4 measures
	Reference  375 :  299 measures

341: Glushkova E.V., Rastorguev A.S.; (1991) Soviet Astron. Lett. 17, 64; Measurements of the proper motions and radial velocities of stars in the open clusters NGC 6939; 1991SvAL...17...64G
342: Geisler D.; (1988) Publ. Astron. Soc. Pacific 100, 338; Radial velocities of stars in five old open clusters.; 1988PASP..100..338G
369: Thorgersen E.N., Friel E.D., Fallon B.V.; (1993) Publ. Astron. Soc. Pacific 105, 1253; Metallicities and velocities of old open clusters; 1993PASP..105.1253T
375: Milone A.A.E.; (1994) Publ. Astron. Soc. Pacific 106, 1085; The mean radial velocity of the open cluster NGC 6939; 1994PASP..106.1085M