NGC 6611

Number of stars per data source

	Reference   57 :    8 stars
	Reference  206 :    2 stars
	Reference  207 :    1 star
	Reference  265 :   12 stars
	Reference  275 :    1 star
	Reference  303 :    2 stars
	Reference 1034 :   16 stars

References

57: Walker M.F.; (1961) Astrophys. J. 133, 438; Studies of extremely young clusters. IV. NGC 6611; 1961ApJ...133..438W
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
265: Hiltner W.A., Morgan W.W.; (1969) Astron. J. 74, 1152; UBV photometry and spectral types in NGC 6611; 1969AJ.....74.1152H
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
303: Walborn N.R.; (1982) Astron. J. 87, 1300; Two-dimensional spectral classification for O stars in the southern Milky Way; 1982AJ.....87.1300W
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