( At the time he actually identified it as a Beta Canis Majoris star , which was subsequently designated a Beta Cephei variable . )
This was confirmed in 1953 by American astronomer D. Harold McNamara , who identified it as a Beta Cephei variable .
( At the time D. Harold McNamara actually identified it as a Beta Canis Majoris star , which was subsequently designated a Beta Cephei variable . )
This was confirmed in 1953 by American astronomer D. Harold McNamara , who identified it as a Beta Cephei variable .