979 citations · 19.7k across the 190 of their papers we have counts for
19 papers · 2 filters
Friends of Hot Jupiters I: A Radial Velocity Search for Massive, Long-Period Companions to Close-In Gas Giant Planets
Heather A. Knutson, Benjamin J. Fulton, Benjamin T. Montet +10
In this paper we search for distant massive companions to known transiting gas giant planets that may have influenced the dynamical evolution of these systems. We present new radia…
A Near-Infrared Transmission Spectrum for the Warm Saturn HAT-P-12b
Michael R. Line, Heather Knutson, Drake Deming +2
We present a HST WFC3 transmission spectrum for the transiting exoplanet HAT-P-12b. This warm (1000 K) sub-Saturn-mass planet has a smaller mass and a lower temperature than the ho…
A Spitzer Search for Transits of Radial Velocity Detected Super-Earths
J. A. Kammer, H. A. Knutson, A. W. Howard +9
Unlike hot Jupiters or other gas giants, super-Earths are expected to have a wide variety of compositions, ranging from terrestrial bodies like our own to more gaseous planets like…
Spitzer and z' Secondary Eclipse Observations of the Highly Irradiated Transiting Brown Dwarf KELT-1b
Thomas G. Beatty, Karen A. Collins, Jonathan Fortney +9
We present secondary eclipse observations of the highly irradiated transiting brown dwarf KELT-1b. These observations represent the first constraints on the atmospheric dynamics of…
Warm Spitzer and Palomar Near-IR Secondary Eclipse Photometry of Two Hot Jupiters: WASP-48b and HAT-P-23b
Joseph G. O'Rourke, Heather A. Knutson, Ming Zhao +9
We report secondary eclipse photometry of two hot Jupiters, WASP-48b and HAT-P-23b, at 3.6 and 4.5 um taken with the InfraRed Array Camera aboard the Spitzer Space Telescope during…
Inference of Inhomogeneous Clouds in an Exoplanet Atmosphere
Brice-Olivier Demory, Julien de Wit, Nikole Lewis +11
We present new visible and infrared observations of the hot Jupiter Kepler-7b to determine its atmospheric properties. Our analysis allows us to 1) refine Kepler-7b's relatively la…
HST hot Jupiter transmission spectral survey: evidence for aerosols and lack of TiO in the atmosphere of WASP-12b
D. K. Sing, A. Lecavelier des Etangs, J. J. Fortney +17
We present HST optical transmission spectra of the transiting hot Jupiter WASP-12b, taken with the STIS instrument. From the transmission spectra, we are able to decisively rule ou…
A Systematic Retrieval Analysis of Secondary Eclipse Spectra II: A Uniform Analysis of Eight Planets and Their C to O Ratios
Michael R Line, Heather Knutson, Aaron Wolf +1
Secondary eclipse spectroscopy provides invaluable insights into the temperatures and compositions of exoplanetary atmospheres. We carry out a systematic temperature and abundance…
Hubble Space Telescope hot Jupiter Transmission Spectral Survey: detection of water in HAT-P-1b from Wide Field Camera 3 near-infrared spatial scan observations
H. R. Wakeford, D. K. Sing, D. Deming +13
We present Hubble Space Telescope near-infrared transmission spectroscopy of the transiting hot-Jupiter HAT-P-1b. We observed one transit with Wide Field Camera 3 using the G141 lo…
The Deep Blue Color of HD189733b: Albedo Measurements with Hubble Space Telescope/Space Telescope Imaging Spectrograph at Visible Wavelengths
Thomas M. Evans, Frédéric Pont, David K. Sing +7
We present a secondary eclipse observation for the hot Jupiter HD189733b across the wavelength range 290-570nm made using the Space Telescope Imaging Spectrograph on the Hubble Spa…
WASP-12b and HAT-P-8b are Members of Triple Star Systems
Eric B. Bechter, Justin R. Crepp, Henry Ngo +9
We present high spatial resolution images that demonstrate the hot Jupiters WASP-12b and HAT-P-8b orbit the primary star of hierarchical triple star systems. In each case, two dist…
Search for a habitable terrestrial planet transiting the nearby red dwarf GJ 1214
M. Gillon, B. -O. Demory, N. Madhusudhan +12
High-precision eclipse spectrophotometry of transiting terrestrial exoplanets represents a promising path for the first atmospheric characterizations of habitable worlds and the se…
Warm Spitzer Photometry of Three Hot Jupiters: HAT-P-3b, HAT-P-4b and HAT-P-12b
Kamen O. Todorov, Drake Deming, Heather A. Knutson +11
We present Warm Spitzer/IRAC secondary eclipse time series photometry of three short-period transiting exoplanets, HAT-P-3b, HAT-P-4b and HAT-P-12b, in both the available 3.6 and 4…
A Systematic Retrieval Analysis of Secondary Eclipse Spectra I: A Comparison of Atmospheric Retrieval Techniques
Michael R. Line, Aaron Wolf, Xi Zhang +6
Spectra of exoplanet atmospheres provide us the opportunity to improve our understanding of these objects just as remote sensing in our own solar system has increased our understan…
Secondary Eclipse Photometry of the Exoplanet WASP-5b with Warm Spitzer
Nathaniel J. Baskin, Heather A. Knutson, Adam Burrows +10
We present photometry of the extrasolar planet WASP-5b in the 3.6 and 4.5 micron bands taken with the Spitzer Space Telescope's Infrared Array Camera as part of the extended warm m…
Orbital Phase Variations of the Eccentric Giant Planet HAT-P-2b
Nikole K. Lewis, Heather A. Knutson, Adam P. Showman +20
We present the first secondary eclipse and phase curve observations for the highly eccentric hot Jupiter HAT-P-2b in the 3.6, 4.5, 5.8, and 8.0 μm bands of the Spitzer Space Telesc…
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 McCullough +18
Exoplanetary transmission spectroscopy in the near-infrared using Hubble/NICMOS is currently ambiguous because different observational groups claim different results from the same…
Spitzer Transits of the Super-Earth GJ1214b and Implications for Its Atmosphere
Jonathan D. Fraine, Drake Deming, Michaël Gillon +7
We observed the transiting super-Earth exoplanet GJ1214b using Warm Spitzer at 4.5 microns wavelength during a 20-day quasi-continuous sequence in May 2011. The goals of our long o…
The Stellar Obliquity and the Long-period planet in the HAT-P-17 Exoplanetary System
Benjamin J. Fulton, Andrew W. Howard, Joshua N. Winn +9
We present the measured projected obliquity -- the sky-projected angle between the stellar spin axis and orbital angular momentum -- of the inner planet of the HAT-P-17 multi-plane…