The Transit Timing and Atmosphere of Hot Jupiter HAT-P-37b

The transit timing variation (TTV) and transmission spectroscopy analyses of the planet HAT-P-37b, which is a hot Jupiter orbiting an G-type star, were performed. Nine new light curves are obtained analysed together with 21 published from literature. updated physical parameters HAT-P-37b presented. TTV show possibility that system has additional induced TTVs amplitude signal 1.74 $\pm$ 0.17 minutes. If body located near 1:2 mean motion resonance orbit, sinusoidal could be caused by gravitational interaction sub-Earth mass 0.06 $M_\oplus$. From analysis upper limit for second planet, Saturn orbital period less than 6 days excluded. broad-band spectra favours cloudy atmospheric model outlier spectrum in $B$-filter.