On the Spectral Classification of HD 111844-5

Anne P. Cowley, Mercedes Jaschek, Carlos Jaschek, Charles R. Cowley
1967 Publications of the Astronomical Society of the Pacific  
HD 111844-5 is a visual binary ( ADS 8690 ) of about 16" separation with magnitudes of 7.7 and 8.2. Berger ( 1962 ) has given spectral types of Am for the primary and F8-G0 III for the secondary. As has been pointed out in a recent article ( Jaschek, M. and C. 1965 ) , this is the only bona fide binary system involving a metallic-
doi:10.1086/128539 fatcat:6i6qkz74rrc7pfd3rfzrgntqva