Pismis 20

Number of stars per data source

	Reference   92 :    1 star
	Reference  192 :    1 star
	Reference  196 :    1 star
	Reference  258 :    1 star
	Reference  332 :    3 stars
	Reference  403 :    1 star
	Reference  444 :   12 stars
	Reference  476 :    1 star
	Reference  491 :    1 star
	Reference  569 :    1 star
	Reference  600 :   11 stars
	Reference 1253 :   15 stars

References

92: Eggen O.J.; (1972) Astrophys. J. 173, 63; NGC 2516 and the Pleiades group; 1972ApJ...173...63E
192: Schild R.E., Garrison R.F., Hiltner W.A.; (1983) Astrophys. J. Suppl. 51, 321; UBV photometry for southern OB stars; 1983ApJS...51..321S
196: Fernie J.D.; (1983) Astrophys. J. Suppl. 52, 7; New UBVRI photometry for 900 supergiants; 1983ApJS...52....7F
258: Crampton D.; (1971) Astron. J. 76, 260; Observations of stars in HII regions. Spectral classification and UBV photometry; 1971AJ.....76..260C
332: Muzzio J.C.; (1979) Astron. J. 84, 639; Photometric study of faint early-type stars in the southern Milky Way; 1979AJ.....84..639M
403: Jackson P.D., Fitzgerald M.P., Moffat A.F.J.; (1977) Astron. Astrophys. 60, 417; Photoelectric and spectroscopic observations of Bochum 15; 1977A&A....60..417J
444: Moffat A.F.J., Vogt N.; (1973) Astron. Astrophys. Suppl. 10, 135; Southern open stars clusters. III. UBV-Hbeta photometry of 28 clusters between galactic longitude 297 and 353; 1973A&AS...10..135M
476: Haug U., Bredow K.; (1977) Astron. Astrophys. Suppl. 30, 235; A contribution to the study of the Norma dark cloud; 1977A&AS...30..235H
491: Neckel T., Chini R.; (1981) Astron. Astrophys. Suppl. 45, 451; The interstellar extinction law in some dusty HII regions; 1981A&AS...45..451N
569: Evans T.L.; (1969) Monthly Notices Roy. Astron. Soc. 146, 101; The open cluster IC 2581; 1969MNRAS.146..101E
600: Peterson C.J., Fitzgerald M.P.; (1988) Monthly Notices Roy. Astron. Soc. 235, 1439; UBV photometry in four southern open clusters with suspected supernova remnants; 1988MNRAS.235.1439P
1253: Lynga G.; (1968) Observatory 88, 20; A study of the cluster Pismis 20; 1968Obs....88...20L