NGC 6871

Number of stars per data source

	Reference   14 :    1 star
	Reference   23 :    1 star
	Reference  206 :    2 stars
	Reference  207 :    1 star
	Reference  211 :    4 stars
	Reference  275 :    1 star
	Reference  806 :    1 star
	Reference  866 :    1 star

References

14: Roman N.G.; (1951) Astrophys. J. 114, 492; A study of the concentration of early-type stars in Cygnus; 1951ApJ...114..492R
23: Morgan W.W., Whitford A.E., Code A.D.; (1953) Astrophys. J. 118, 318; Studies in galactic structure. I. A preliminary determination of the space distribution of the blue giants; 1953ApJ...118..318M
206: Hiltner W.A.; (1956) Astrophys. J. Suppl. 2, 389; Photometric, polarization and spectrographic observations of O and B stars; 1956ApJS....2..389H
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
275: Walborn N.R.; (1972) Astron. J. 77, 312; Spectral classification of OB stars in both hemisphere and the absolute-magnitude calibration; 1972AJ.....77..312W
806: Bertaud C.; (1960) J. Obs. 43, 129; Catalogue et bibliographie des etoiles a spectre particulier. Premier supplement; 1960JO.....43..129B
866: Barbier M.; (1962) Publ. Obs. Haute-Provence 6 no 8; Structure de la galaxie dans la region de P Cygni