A survey of eight hot Jupiters in secondary eclipse using WIRCam at CFHT
Article
Article Title | A survey of eight hot Jupiters in secondary eclipse using WIRCam at CFHT |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Martioli, Eder (Author), Colon, Knicole D. (Author), Angerhausen, Daniel (Author), Stassun, Keivan G. (Author), Rodriguez, Joseph E. (Author), Zhou, George (Author), Gaudi, B. Scott (Author), Pepper, Joshua (Author), Beatty, Thomas G. (Author), Tata, Ramarao (Author), James, David J. (Author), Eastman, Jason D. (Author), Wilson, Paul Anthony (Author), Bayliss, Daniel (Author) and Stevens, Daniel J. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 474 (3), pp. 4264-4277 |
Number of Pages | 14 |
Year | 2017 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stx3009 |
Web Address (URL) | https://academic.oup.com/mnras/article/474/3/4264/4655187 |
Abstract | We present near-infrared high-precision photometry for eight transiting hot Jupiters observed during their predicted secondary eclipses. Our observations were carried out using the staring mode of the WIRCam instrument on the Canada-France-Hawaii Telescope (CFHT). We present the observing strategies and data reduction methods which delivered time series photometry with statistical photometric precision as low as 0.11 per cent. We performed a Bayesian analysis to model the eclipse parameters and systematics simultaneously. The measured planet-to-star flux ratios allowed us to constrain the thermal emission from the day side of these hot Jupiters, as we derived the planet brightness temperatures. Our results combined with previously observed eclipses reveal an excess in the brightness temperatures relative to the blackbody prediction for the equilibrium temperatures of the planets for a wide range of heat redistribution factors. We find a trend that this excess appears to be larger for planets with lower equilibrium temperatures. This may imply some additional sources of radiation, such as reflected light from the host star and/or thermal emission from residual internal heat from the formation of the planet. |
Keywords | stars: planetary systems; instrumentation: photometers; infrared:; planetary systems; facility: CFHT; instrument: WIRCam; Astrophysics -; Earth and Planetary Astrophysics; Astrophysics - Instrumentation; Methods for Astrophysics; Astrophysics - Solar and Stellar Astrophysics |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2017 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | National Astrophysics Laboratory, Brazil |
NASA Ames Research Center, United States | |
NASA Goddard Space Flight Center, United States | |
Vanderbilt University, United States | |
Center for Astrophysics Harvard and Smithsonian, United States | |
Ohio State University, United States | |
Lehigh University, United States | |
Pennsylvania State University, United States | |
Ohio University, United States | |
University of Washington, United States | |
Center for Astrophysics Harvard and Smithsonian, United States | |
Sorbonne University, France | |
University of Geneva, Switzerland | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q6x51/a-survey-of-eight-hot-jupiters-in-secondary-eclipse-using-wircam-at-cfht
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