Extrasolar Planet Transits Observed at Kitt Peak National Observatory
2012
ABSTRACT.We obtained JJ-, HH-, and JHJH-band photometry of known extrasolar planet transiting systems at the 2.1 m Kitt Peak National Observatory Telescope using the FLAMINGOS infrared camera between 2008 October and 2011 October. From the derived light curves we have extracted the midtransit times, transit depths and transit durations for these events. The precise midtransit times obtained help improve the orbital periods and also constrain transit-time variations of the systems. For most cases the published system parameters successfully accounted for our observed light curves, but in some instances we derive improved planetary radii and orbital periods. We complemented our 2.1 m infrared observations using CCD z′z′-band and BB-band photometry (plus two Hα filter observations) obtained with the Kitt Peak Visitor Center Telescope, and with four HH-band transits observed in 2007 October with the NSO’s 1.6 m McMath-Pierce Solar Telescope. The principal highlights of our results are (1) Our ensemble of JJ-b...
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