NGC 4609

Number of stars per data source

	Reference  159 :    2 stars
	Reference  430 :    3 stars
	Reference  437 :    3 stars

References

 159

Muzzio J.C., FeInstein A., Orsatti A.M.

(1976) Publ. Astron. Soc. Pacific 88, 526

UBV and Hbeta photometry of faint early-type stars in Crux and Centaurus

1976PASP...88..526M

 430

Franco G.A.P.

(1989) Astron. Astrophys. Suppl. 77, 227

Stromgren and HBeta photometry of stars earlier than G0 in the southern Coalsak direction

1989A&AS...77..227F

 437

Seidensticker K.J.

(1989) Astron. Astrophys. Suppl. 79, 61

The distance and structure of the Coalsack. I. Photometric data

1989A&AS...79...61S