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
-