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Extrasolar Planet Transits Observed at Kitt Peak National ObservatoryWe obtained J-, H-, and JH-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 z0-band and B-band photometry (plus two H(alpha) filter observations) obtained with the Kitt Peak Visitor Center Telescope, and with four H-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 J-band planetary radii agree with optical radii, with the best-fit relation being RpRJ0:0017 0:979RpRvis. (2) We observe starspot crossings during the transit of WASP-11HAT-P-10. (3) We detect starspot crossings by HAT-P-11b (Kepler-3b), thus confirming that the magnetic evolution of the stellar active regions can be monitored even after the Kepler mission has ended. (4) We confirm a grazing transit for HAT-P-27WASP-40. In total, we present 57 individual transits of 32 known exoplanet systems.
Document ID
Document Type
Reprint (Version printed in journal)
External Source(s)
Sada, Pedro V.
(Monterrey Univ. Mexico)
Jennings, Donald E.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Deming, Drake
(Kitt Peak National Observatory Tucson, AZ, United States)
Jennings, Donald E.
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Jackson, Brian
(Oak Ridge Associated Universities Greenbelt, MD, United States)
Hamilton, Catrina M.
(Dickinson Coll. Carlisle, PA, United States)
Fraine, Jonathan
(Maryland Univ. College Park, MD, United States)
Peterson, Steven W.
(Kitt Peak National Observatory Tucson, AZ, United States)
Haase, Flynn
(Kitt Peak National Observatory Tucson, AZ, United States)
Bays, Kevin
(Kitt Peak National Observatory Tucson, AZ, United States)
Lunsford, Allen
(Catholic Univ. of America Washington, DC, United States)
O'Gorman, Eamon
(Trinity Coll. Dublin, Ireland)
Date Acquired
December 18, 2015
Publication Date
March 15, 2012
Publication Information
Publication: The Astronomical Society of the Pacific
Volume: 124
Issue: 913
Subject Category
Lunar And Planetary Science And Exploration
Report/Patent Number
Funding Number(s)
Distribution Limits
Kitt Peak
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