285 citations · 2.3k across the 32 of their papers we have counts for
30 papers · 1 filter
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…
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…
Water Vapour Absorption in the Clear Atmosphere of an exo-Neptune
Jonathan Fraine, Drake Deming, Björn Benneke +6
Transmission spectroscopy to date has detected atomic and molecular absorption in Jupiter-sized exoplanets, but intense efforts to measure molecular absorption in the atmospheres o…