Survey for Transiting Extrasolar Planets in Stellar Systems: I. Fundamental Parameters of the Open Cluster Ngc 1245

We derive fundamental parameters for the old, rich open cluster NGC 1245 using BV I photometry from the MDM 1.3m and 2.4m telescopes. Based on detailed isochrone fitting, we find NGC 1245 has a slightly sub-solar metallicity, [Fe/H] = −0.05 ± 0.03 (statistical) ± 0.08 (systematic), and an age of 1.04 ± 0.02 ± 0.09 Gyr. In contrast to previous studies, we… (More)