Ruprecht 55

Number of stars per data source

	Reference  425 :    3 stars
	Reference  490 :   15 stars


FitzGerald M.P., Luiken M., Maitzen H.M., Moffat A.F.J.
(1979) Astron. Astrophys. Suppl. 37, 345
Analysis of the results of MK classification of 176 stars in 37 southern open clusters
Bosch G., Barba R., Morrell N., Niemela V., Ostrov P., Arnal M., Cappa C., Morras R., Gimenez de Castro G.
(2003) Mon. Not. R. Astron. Soc. 341, 169
Ruprecht 55: an OB association at the edge of our Galaxy