Hogg 22

Number of stars per data source

	Reference  374 :    1 star
	Reference  479 :    2 stars

374: Kilkenny D., Whittet D.C.B.; (1985) Monthly Notices Roy. Astron. Soc. 216, 127; On the intrinsic uvby colours of early-type supergiants; 1985MNRAS.216..127K
479: Kaltcheva N.T., Georgiev L.N.; (1992) Monthly Notices Roy. Astron. Soc. 259, 166; Stromgren and HBeta photometry of OB associations and open clusters - I. Ara OB1; 1992MNRAS.259..166K