H
Heather Knutson
Researcher at California Institute of Technology
Publications - 131
Citations - 11932
Heather Knutson is an academic researcher from California Institute of Technology. The author has contributed to research in topics: Planet & Exoplanet. The author has an hindex of 55, co-authored 106 publications receiving 10766 citations.
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Journal ArticleDOI
A continuum from clear to cloudy hot-Jupiter exoplanets without primordial water depletion
David K. Sing,Jonathan J. Fortney,Nikolay Nikolov,Hannah R. Wakeford,Tiffany Kataria,Thomas M. Evans,Suzanne Aigrain,Gilda E. Ballester,Adam Burrows,Drake Deming,Jean-Michel Desert,Neale P. Gibson,Gregory W. Henry,Catherine M. Huitson,Heather Knutson,Alain Lecavelier des Etangs,Frederic Pont,Adam P. Showman,Alfred Vidal-Madjar,Michael H. Williamson,Paul Wilson +20 more
TL;DR: The difference between the planetary radius measured at optical and infrared wavelengths is an effective metric for distinguishing different atmosphere types, so that strong water absorption lines are seen in clear-atmosphere planets and the weakest features are associated with clouds and hazes.
Journal ArticleDOI
INFRARED TRANSMISSION SPECTROSCOPY OF THE EXOPLANETS HD 209458b AND XO-1b USING THE WIDE FIELD CAMERA-3 ON THE HUBBLE SPACE TELESCOPE
Drake Deming,Drake Deming,A. Wilkins,Peter R. McCullough,Adam Burrows,Jonathan J. Fortney,Eric Agol,Eric Agol,Ian Dobbs-Dixon,Ian Dobbs-Dixon,Nikku Madhusudhan,Nicolas Crouzet,Jean-Michel Desert,Ronald L. Gilliland,Korey Haynes,Korey Haynes,Heather Knutson,Michael R. Line,Zazralt Magic,Avi Mandell,Sukrit Ranjan,David Charbonneau,Mark Clampin,Sara Seager,Adam P. Showman +24 more
TL;DR: In this paper, the authors reported WFC3 spectroscopy of the giant planets HD 209458b and XO-1b in transit, using spatial scanning mode for maximum photon-collecting efficiency.
Journal ArticleDOI
Infrared Transmission Spectroscopy of the Exoplanets HD209458b and XO-1b Using the Wide Field Camera-3 on the Hubble Space Telescope
Drake Deming,Ashlee Wilkins,Peter R. McCullough,Adam Burrows,Jonathan J. Fortney,Eric Agol,Ian Dobbs-Dixon,Nikku Madhusudhan,Nicolas Crouzet,Jean-Michel Desert,Ronald L. Gilliland,Korey Haynes,Heather Knutson,Michael R. Line,Zazralt Magic,Avi Mandell,Sukrit Ranjan,David Charbonneau,Mark Clampin,Sara Seager,Adam P. Showman +20 more
TL;DR: In this paper, the authors reported WFC3 spectroscopy of the giant planets HD209458b and XO-1b in transit, using spatial scanning mode for maximum photon-collecting efficiency.
Journal ArticleDOI
The 3.6-8.0 Micron Broadband Emission Spectrum of HD 209458b: Evidence for an Atmospheric Temperature Inversion
TL;DR: In this article, the authors estimate the strength of the bandpass-integrated thermal emission from the extrasolar planet HD 209458b at 3.6, 4.5, 5.8, and 8.0 microns using the Infrared Array Camera (IRAC) on the Spitzer Space Telescope.
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Detection of atmospheric haze on an extrasolar planet: The 0.55 - 1.05 micron transmission spectrum of HD189733b with the Hubble Space Telescope
TL;DR: In this article, the authors observed an almost featureless transmission spectrum between 550 and 1050 nm, with no indication of the expected sodium or potassium atomic absorption features, and compared the results with the transit radius observed in the near and mid-infrared (2-8 microns), and the slope of the spectrum, suggest the presence of a haze of sub-micron particles in the upper atmosphere of the planet.