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Session 54 - Star Clusters, Kinematics and the Galactic Center.
Display session, Wednesday, June 10
Atlas Ballroom,
In previous reports the detection of blue stars falling below the horizontal branch in M 92 has been described. At DAO a check was made of three individual CCD investigations of M 92. The first was the data set obtained by me at KPNO; the second was a CCD investigation by Sarajedini; and the third was a CCD investigation by Stetson. DAOMATCH and DAOMASTER were used to cross-identify stars on all the frames, identified by the star number on the KPNO frames. The stars falling below the horizontal branch were identified in all data sets and they were found to have the same characteristics, namely blue colors and magnitudes 0.4 mag or more below the horizontal branch. These data confirm the reality of their positions below the horizontal branch. Their positions are not the result of photometric errors.
