NGC 957

Number of stars per data source

	Reference   33 :    1 star
	Reference   80 :    1 star
	Reference   97 :    1 star
	Reference  207 :    5 stars
	Reference  211 :    1 star
	Reference  221 :    2 stars
	Reference  382 :    1 star
	Reference  843 :    1 star
	Reference  870 :    1 star

References

33: Johnson H.L., Morgan W.W.; (1955) Astrophys. J. 122, 429; Photometric and spectroscopic observations of the double cluster in Perseus; 1955ApJ...122..429J
80: Slettebak A.; (1968) Astrophys. J. 154, 933; Stellar rotation and Be stars in the h and chi Persei association; 1968ApJ...154..933S
97: Young A., Martin A.E.; (1973) Astrophys. J. 181, 805; A search for Ap stars in open clusters; 1973ApJ...181..805Y
207: Hoag A.A., Applequist L.; (1965) Astrophys. J. Suppl. 12, 215; Distance moduli of open clusters; 1965ApJS...12..215H
211: Walborn N.R.; (1971) Astrophys. J. Suppl. 23, 257; Some spectroscopic characteristics of the OB stars: An investigation of the space distribution of certain OB stars and the reference frame of the classification; 1971ApJS...23..257W
221: Sowell J.R; (1987) Astrophys. J. Suppl. 64, 241; Yellow evolved stars in open clusters; 1987ApJS...64..241S
382: Conti P.S., van den Heuvel E.P.J.; (1970) Astron. Astrophys. 9, 466; On the presence of metallic line stars in young clusters: M7 and NGC 7160; 1970A&A.....9..466C
843: Buscombe W.; (1962) Mount Stromlo Obs. Mim no 6; Spectral classification of southern fundamental stars
870: Fehrenbach C., Duflot M., Boulon J., Rebeirot E.; (1966) Publ. Obs. Haute-Provence 8 no 25; La mesure des vitesses radiales au prisme objectif. XIX. Liste de 893 vitesses radiales determinees au prisme objectif a vision directe