NGC 2244

Number of stars per data source

	Reference   65 :    5 stars
	Reference   74 :   12 stars
	Reference   98 :    3 stars
	Reference  211 :    1 star
	Reference  275 :    2 stars
	Reference  538 :   11 stars
	Reference  864 :    3 stars
	Reference  865 :    1 star
	Reference 1034 :    6 stars

References

65: Johnson H.L.; (1962) Astrophys. J. 136, 1135; The galactic cluster NGC 2244; 1962ApJ...136.1135J
74: Morgan W.W., Hiltner W.A., Neff J.S., Garrison R.; (1965) Astrophys. J. 142, 974; Studies in spectral classification. III. The H-R diagrams of NGC 2244 and NGC 2264; 1965ApJ...142..974M
98: Conti P.S., Leep E.M.; (1974) Astrophys. J. 193, 113; Spectroscopic observations of O-type stars. V. The hydrogen lines and lambda 4686 He II; 1974ApJ...193..113C
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
538: Hoag A.A., Smith E.P.; (1959) Publ. Astr. Soc. Pacific 71, 32; Polarization in NGC2244; 1959PASP...71...32H
864: Boulon J., Fehrenbach C.; (1960) Publ. Obs. Haute-Provence 4 no 55; La mesure des vitesses radiales au prisme objectif. X. 4eme liste de vitesses radiales determinees au prisme objetcif a vision directe
865: Barbier M., Boulon J.; (1960) Publ. Obs. Haute-Provence 5 no 3; La mesure des vitesses radiales au prisme objectif. XI. 1eme liste de vitesses radiales d'etoiles O et B determinees au prisme objetcif a vision directe
1034: Wolff S.C., Strom S.E., Dror D., Venn K.; (2007) Astron. J. 133, 1092; Rotational Velocities for B0-B3 Stars in Seven Young Clusters: Further Study of the Relationship between Rotation Speed and Density in Star-Forming Regions; 2007AJ....133.1092W