Trumpler 18

Number of stars per data source

	Reference  186 :    1 star
	Reference  247 :    9 stars
	Reference  279 :    2 stars
	Reference  460 :   31 stars
	Reference  488 :  115 stars
	Reference  523 :   66 stars
	Reference  567 :    1 star
	Reference 1851 :   17 stars

References

186: Deutschman W.A., Davis R.J., Schild R.E.; (1976) Astrophys. J. Suppl. 30, 97; The galactic distribution of interstellar absorption as determined from the Celescope catalog of ultraviolet stellar observations and A new catalog of ubv, Hbeta photoelectric observations; 1976ApJS...30...97D
247: Bok B.J., Bok P.F.; (1969) Astron. J. 74,1125; Photometric standards for the southern hemisphere; 1969AJ.....74.1125B
279: Claria J.J.; (1976) Astron. J. 81, 155; Relation of NGC 3590, Hogg 10, and Collinder 240 to the structure of the Carina spiral feature; 1976AJ.....81..155C
460: Moffat A.F.J., Vogt N.; (1975) Astron. Astrophys. Suppl. 20, 125; Southern open star clusters. V. UBV Hbeta photometry of 20 clusters in Carina; 1975A&AS...20..125M
488: Johansson K.L.V.; (1980) Astron. Astrophys. Suppl. 41, 43; Colour excess and stellar distribution in five selected direction of The Milky Way in Carina, Crux, Centaurus and Norma; 1980A&AS...41...43J
523: Vazquez R.A., Feinstein A.; (1990) Astron. Astrophys. Suppl. 86, 209; The open cluster Tr 18; 1990A&AS...86..209V
567: Feinstein A.; (1969) Monthly Notices Roy. Astron. Soc. 143, 273; The OB stars in Carina-Centaurus; 1969MNRAS.143..273F
1851: Fernie J.D.; (1979) private communication