NEAR-INFRARED THERMAL EMISSION DETECTIONS OF A NUMBER OF HOT JUPITERS AND THE SYSTEMATICS OF GROUND-BASED NEAR-INFRARED PHOTOMETRY
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Croll-2015-NEAR-INFRARED THERMA.pdf
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Author(s)
Albert, Loic
Jayawardhana, Ray
Cushing, Michael C.
Moutou, Claire
Lafreniere, David
Johnson, John Asher
Bonomo, Aldo S.
Deleuil, Magali
Fortney, Jonathan J.
Croll, Bryce J.
Date Issued
March 2015
Journal
The Astrophysical Journal
Publisher
IOP Publishing
Citation
Croll, Bryce, Loic Albert, Ray Jayawardhana, Michael Cushing, Claire Moutou, David Lafreniere, John Asher Johnson, Aldo S. Bonomo, Magali Deleuil, and Jonathan Fortney. “NEAR-INFRARED THERMAL EMISSION DETECTIONS OF A NUMBER OF HOT JUPITERS AND THE SYSTEMATICS OF GROUND-BASED NEAR-INFRARED PHOTOMETRY.” The Astrophysical Journal 802, no. 1 (March 18, 2015): 28. © 2015 The American Astronomical Society
Version
Final published version
Abstract
We present detections of the near-infrared thermal emission of three hot Jupiters and one brown dwarf using the Wide-field Infrared Camera (WIRCam) on the Canada-France-Hawaii Telescope (CFHT). These include Ks-band secondary eclipse detections of the hot Jupiters WASP-3b and Qatar-1b and the brown dwarf KELT-1b. We also report Y-band, K [subscript CONT]-band, and two new and one reanalyzed Ks-band detections of the thermal emission of the hot Jupiter WASP-12b. We present a new reduction pipeline for CFHT/WIRCam data, which is optimized for high precision photometry. We also describe novel techniques for constraining systematic errors in ground-based near-infrared photometry, so as to return reliable secondary eclipse depths and uncertainties. We discuss the noise properties of our ground-based photometry for wavelengths spanning the near-infrared (the YJHK bands), for faint and bright stars, and for the same object on several occasions. For the hot Jupiters WASP-3b and WASP-12b we demonstrate the repeatability of our eclipse depth measurements in the Ks band; we therefore place stringent limits on the systematics of ground-based, near-infrared photometry, and also rule out violent weather changes in the deep, high pressure atmospheres of these two hot Jupiters at the epochs of our observations.
MIT Department
MIT Kavli Institute for Astrophysics and Space Research
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DOI of Published Version
https://doi.org/10.1088/0004-637x/802/1/28
