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Combining Photometry from Kepler and TESS to Improve Short-Period Exoplanet Characterization
External Online Source: doi:10.1088/1538-3873/128/965/074503
Author and Affiliation:
Placek, Ben(Albany Univ., Physics Dept., Albany, NY, United States)
Knuth, Kevin H.(Albany Univ., Physics Dept., Albany, NY, United States)
Angerhausen, Daniel(NASA Goddard Space Flight Center, Greenbelt, MD, United States)
Abstract: Planets emit thermal radiation and reflect incident light that they receive from their host stars. As a planet orbits its host star the photometric variations associated with these two effects produce very similar phase curves. If observed through only a single bandpass, this leads to a degeneracy between certain planetary parameters that hinder the precise characterization of such planets. However, observing the same planet through two different bandpasses gives much more information about the planet. Here we develop a Bayesian methodology for combining photometry from both Kepler and the Transiting Exoplanet Survey Satellite. In addition, we demonstrate via simulations that one can disentangle the reflected and thermally emitted light from the atmosphere of a hot-Jupiter as well as more precisely constrain both the geometric albedo and day-side temperature of the planet. This methodology can further be employed using various combinations of photometry from the James Webb Space Telescope, the Characterizing ExOplanet Satellite, or the PLATO mission.
Publication Date: Jun 13, 2016
Document ID:
20160010653
(Acquired Aug 31, 2016)
Subject Category: ASTRONOMY
Report/Patent Number: GSFC-E-DAA-TN35285
Document Type: Journal Article
Publication Information: Publications of the Astronomical Society of the Pacific (ISSN 0004-6280; e-ISSN 1538-3873); Volume 128; No. 965; 074503
Publisher Information: The Astronomical Society of the Pacific
Contract/Grant/Task Num: NNH15CO48B
Financial Sponsor: NASA Goddard Space Flight Center; Greenbelt, MD United States
Description: 9p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ALBEDO; ASTRONOMICAL PHOTOMETRY; ASTRONOMICAL SATELLITES; BAYES THEOREM; BANDPASS FILTERS; CHARACTERIZATION; EXTRASOLAR PLANETS; SKY SURVEYS (ASTRONOMY); DATA ACQUISITION; JAMES WEBB SPACE TELESCOPE; KEPLER MISSION; LIGHT CURVE; MATHEMATICAL MODELS; PRECISION
Other Descriptors: PHOTOMETRIC VARIATIONS; BANDPASS; TRANSITING EXOPLANET SURVEY SATELLITE
Availability Source: Other Sources
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