IC 4996

Number of stars per data source

	Reference    7 :    1 star
	Reference   14 :    2 stars
	Reference  202 :    2 stars
	Reference  206 :    1 star
	Reference  207 :    4 stars
	Reference  211 :    2 stars
	Reference  221 :    1 star
	Reference  795 :    2 stars
	Reference  843 :    1 star
	Reference  866 :    1 star
	Reference  867 :    2 stars

References

7: Eggen O.J.; (1950) Astrophys. J. 111, 65; Photoelectric studies. I. Color-luminosity array for members of the Hyades cluster; 1950ApJ...111...65E
14: Roman N.G.; (1951) Astrophys. J. 114, 492; A study of the concentration of early-type stars in Cygnus; 1951ApJ...114..492R
202: Morgan W.W., Code A.D., Whitford A.E.; (1955) Astrophys. J. Suppl. 2, 41; Studies in galactic structure. II. Luminosity classification for 1270 blue giant stars; 1955ApJS....2...41M
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
221: Sowell J.R; (1987) Astrophys. J. Suppl. 64, 241; Yellow evolved stars in open clusters; 1987ApJS...64..241S
795: Numerova A.B.; (1958) Izv. Krym. Astrofis. Obs. 19, 189; The space distribution of early type stars in Cygnus; 1958IzKry..19..189N
843: Buscombe W.; (1962) Mount Stromlo Obs. Mim no 6; Spectral classification of southern fundamental stars
866: Barbier M.; (1962) Publ. Obs. Haute-Provence 6 no 8; Structure de la galaxie dans la region de P Cygni
867: Barbier M.; (1963) Publ. Obs. Haute-Provence 6 no 36; La mesure des vitesses radiales au prisme objectif. XV. 7eme liste de vitesses radiales determinees au prisme objectif a vision directe