NGC 6613

Number of stars per data source

	Reference  173 :    1 star
	Reference  239 :    7 stars
	Reference  378 :   13 stars

References

 173
Hiltner W.A.
(1956) Astrophys. J. Suppl. 2, 389
Photometric polarization and spectrographic observations of O and B Stars
1956ApJS....2..389H
 239
Racine R.
(1968) Astron. J. 73, 233
Stars in reflection nebulae
1968AJ.....73..233R
 378
Lindoff U.
(1971) Astron. Astrophys. 15, 439
The open clusters NGC 6613 (M18) and NGC 6716
1971A&A....15..439L