Different Characteristics of the Bright Branches of the Globular Clusters M3 and M13

Dong-Hwan Cho, Sang-Gak Lee, Young-Beom Jeon +1

We carried out wide-field BVI CCD photometric observations of the GCs M3 and M13 using the BOAO 1.8 m telescope equipped with a 2K CCD. We present CMDs of M3 and M13. We have found…