NGC 6633

Number of stars per data source

	Reference    9 :    1 star
	Reference  212 :    1 star
	Reference  217 :    2 stars
	Reference  264 :    1 star
	Reference  278 :    1 star
	Reference  564 :   26 stars

References

 9

Moore J.H., Paddock G.F.

(1950) Astrophys. J. 112, 48

Radial velocities, spectral types and luminosity classes of 820 stars

1950ApJ...112...48M

 212

Harris G.L.H.

(1976) Astrophys. J. Suppl. 30, 451

Evolved stars in open clusters

1976ApJS...30..451H

 217

Gray R.O., Garrison R.F.

(1987) Astrophys. J. Suppl. 65, 581

The early A type stars: refined MK classification, confrontation with Stromgren photometry, and the effects of rotation

1987ApJS...65..581G

 264

Murphy R.E.

(1969) Astron. J. 74,1082

A spectroscopic investigation of visual binaries with B-type primaries

1969AJ.....74.1082M

 278

Cowley A.P.

(1972) Astron. J. 77, 750

Spectral classification of the bright B8 stars

1972AJ.....77..750C

 564

Levato H., Abt H.A.

(1977) Publ. Astr. Soc. Pacific 89, 274

Spectral types in the open cluster NGC 6633

1977PASP...89..274L