285 citations · 2.3k across the 32 of their papers we have counts for
33 papers
A young progenitor for the most common planetary systems in the Galaxy
John H. Livingston, Erik A. Petigura, Trevor J. David +39
The Galaxy's most common known planetary systems have several Earth-to-Neptune-size planets in compact orbits. At small orbital separations, larger planets are less common than the…
The metal-poor atmosphere of a Neptune/Sub-Neptune planet progenitor
Saugata Barat, Jean-Michel Désert, Allona Vazan +12
Young transiting exoplanets offer a unique opportunity to characterize the atmospheres of fresh and evolving products of planet formation. We present the transmission spectrum of V…
Atmospheric Retrieval of L Dwarfs: Benchmarking Results and Characterizing the Young Planetary Mass Companion HD 106906 b in the Near-Infrared
Arthur D. Adams, Michael R. Meyer, Alex R. Howe +7
We present model constraints on the atmospheric structure of HD 106906 b, a planetary-mass companion orbiting at a ~700 AU projected separation around a 15 Myr-old stellar binary,…
A new method to correct for host star variability in multi-epoch observations of exoplanet transmission spectra
Vatsal Panwar, Jean-Michel Désert, Kamen O. Todorov +5
Transmission spectra of exoplanets orbiting active stars suffer from wavelength-dependent effects due to stellar photospheric heterogeneity. WASP-19b, an ultra-hot Jupiter (T$_{eq}…
A new method to measure the spectra of transiting exoplanet atmospheres using multi-object spectroscopy
Vatsal Panwar, Jean-Michel Désert, Kamen O. Todorov +5
Traditionally, ground-based spectrophotometric observations probing transiting exoplanet atmospheres have employed a linear map between comparison and target star light curves (e.g…
Characterizing the protolunar disk of the accreting companion GQ Lupi B
Tomas Stolker, Sebastiaan Y. Haffert, Aurora Y. Kesseli +11
GQ Lup B is a young and accreting, substellar companion that appears to drive a spiral arm in the circumstellar disk of its host star. We report high-contrast imaging observations…
The Dark World: A Tale of WASP-43b in Reflected Light with HST WFC3/UVIS
Jonathan Fraine, Laura C. Mayorga, Kevin B. Stevenson +14
Optical, reflected light eclipse observations provide a direct probe of the exoplanet scattering properties, such as from aerosols. We present here the photometric, reflected light…
Evidence for disequilibrium chemistry from vertical mixing in hot Jupiter atmospheres. A comprehensive survey of transiting close-in gas giant exoplanets with warm-Spitzer/IRAC
C. Baxter, J-M. Désert, S-M. Tsai +10
[Abridged] Aims. We present a large atmospheric study of 49 gas giant exoplanets using infrared transmission photometry with Spitzer/IRAC at 3.6 and 4.5um. Methods. We uniformly an…
MIRACLES: atmospheric characterization of directly imaged planets and substellar companions at 4-5 m. II. Constraints on the mass and radius of the enshrouded planet PDS 70 b
Tomas Stolker, Gabriel-Dominique Marleau, Gabriele Cugno +4
The circumstellar disk of PDS 70 hosts two forming planets, which are actively accreting gas from their environment. In this work, we report the first detection of PDS 70 b in the…
A transition between the hot and the ultra-hot Jupiter atmospheres
Claire Baxter, Jean-Michel Désert, Vivien Parmentier +6
[Abridged] A key hypothesis in the field of exoplanet atmospheres is the trend of atmospheric thermal structure with planetary equilibrium temperature. We explore this trend and re…
The Young Suns Exoplanet Survey: Detection of a wide orbit planetary mass companion to a solar-type Sco-Cen member
A. J. Bohn, M. A. Kenworthy, C. Ginski +9
The Young Suns Exoplanet Survey (YSES) consists of a homogeneous sample of 70 young, solar-mass stars located in the Lower Centaurus-Crux subgroup of the Scorpius-Centaurus associa…
Mass Loss from the Exoplanet WASP-12b Inferred from Phase Curves
Taylor J. Bell, Michael Zhang, Patricio E. Cubillos +12
The exoplanet WASP-12b is the prototype for the emerging class of ultra-hot, Jupiter-mass exoplanets. Past models have predicted---and near ultra-violet observations have shown---t…
Ground-based optical transmission spectrum of the hot Jupiter HAT-P-1b
Kamen O. Todorov, Jean-Michel Desert, Catherine M. Huitson +6
Time-series spectrophotometric studies of exoplanets during transit using ground-based facilities are a promising approach to characterize their atmospheric compositions. We aim to…
The Transiting Exoplanet Community Early Release Science Program for JWST
Jacob L. Bean, Kevin B. Stevenson, Natalie M. Batalha +99
The James Webb Space Telescope (JWST) presents the opportunity to transform our understanding of planets and the origins of life by revealing the atmospheric compositions, structur…
Phase curves of WASP-33b and HD 149026b and a New Correlation Between Phase Curve Offset and Irradiation Temperature
Michael Zhang, Heather A. Knutson, Tiffany Kataria +9
We present new 3.6 and 4.5 Spitzer phase curves for the highly irradiated hot Jupiter WASP-33b and the unusually dense Saturn-mass planet HD 149026b. As part of this analysis,…
High signal-to-noise spectral characterization of the planetary-mass object HD 106906 b
Sebastian Daemgen, Kamen Todorov, Sascha P. Quanz +4
We spectroscopically characterize the atmosphere of HD 106906b, a young low-mass companion near the deuterium burning limit. The wide separation from its host star of 7.1" makes it…
Mid-infrared characterization of the planetary-mass companion ROXs 42B b
Sebastian Daemgen, Kamen Todorov, Jasmin Silva +10
We present new Keck/NIRC2 35 m infrared photometry of the planetary-mass companion to ROXS 42B in , and for the first time in Brackett- (Br) and in $M_\mathrm…
Transiting Exoplanet Studies and Community Targets for JWST's Early Release Science Program
Kevin B. Stevenson, Nikole K. Lewis, Jacob L. Bean +49
The James Webb Space Telescope will revolutionize transiting exoplanet atmospheric science due to its capability for continuous, long-duration observations and its larger collectin…
3.6 and 4.5 m Phase Curves of the Highly-Irradiated Hot Jupiters WASP-19b and HAT-P-7b
Ian Wong, Heather A. Knutson, Tiffany Kataria +15
We analyze full-orbit phase curve observations of the transiting hot Jupiters WASP-19b and HAT-P-7b at 3.6 and 4.5 m obtained using the Spitzer Space Telescope. For WASP-19b, we…
Spitzer Secondary Eclipse Observations of Five Cool Gas Giant Planets and Empirical Trends in Cool Planet Emission Spectra
Joshua A. Kammer, Heather A. Knutson, Michael R. Line +15
In this work we present Spitzer 3.6 and 4.5 micron secondary eclipse observations of five new cool (<1200 K) transiting gas giant planets: HAT-P-19b, WASP-6b, WASP-10b, WASP-39b, a…
3.6 and 4.5 m Phase Curves of the Highly-Irradiated Eccentric Hot Jupiter WASP-14b
Ian Wong, Heather A. Knutson, Nikole K. Lewis +14
We present full-orbit phase curve observations of the eccentric () transiting hot Jupiter WASP-14b obtained in the 3.6 and 4.5 m bands using the \textit{Spitzer Spac…
The Water Abundance of the Directly Imaged Substellar Companion κ And b Retrieved from a Near Infrared Spectrum
Kamen O. Todorov, Michael R. Line, Jaime E. Pineda +4
Spectral retrieval has proven to be a powerful tool for constraining the physical properties and atmospheric compositions of extrasolar planet atmospheres from observed spectra, pr…
Spitzer Secondary Eclipses of the Dense, Modestly-irradiated, Giant Exoplanet HAT-P-20b Using Pixel-Level Decorrelation
Drake Deming, Heather Knutson, Joshua Kammer +13
HAT-P-20b is a giant exoplanet that orbits a metal-rich star. The planet itself has a high total density, suggesting that it may also have a high metallicity in its atmosphere. We…
Updated Spitzer Emission Spectroscopy of Bright Transiting Hot Jupiter HD189733b
Kamen O. Todorov, Drake Deming, Adam S. Burrows +1
We analyze all existing secondary eclipse time series spectroscopy of hot Jupiter HD189733b acquired with the now defunct Spitzer/IRS instrument. We describe the novel approaches w…