%0 Journal Article %J \apj %D 2009 %T Deep MMT Transit Survey of the Open Cluster M37 IV: Limit on the Fraction of Stars with Planets as Small as 0.3R$_J$ %A Hartman, J. D. %A Gaudi, B. S. %A Holman, M. J. %A McLeod, B. A. %A Stanek, K. Z. %A Barranco, J. A. %A Pinsonneault, M. H. %A Meibom, S. %A Kalirai, J. S. %K Astrophysics %K open clusters and associations: individual: M37 %K Planetary systems %K surveys %B \apj %V 695 %P 336-356 %8 apr %G eng %N 1 %R 10.1088/0004-637X/695/1/336