297 citations · 2.2k across the 26 of their papers we have counts for
26 papers
ACCESS: Tentative detection of HO in the ground-based optical transmission spectrum of the low-density hot Saturn HATS-5b
Natalie H. Allen, Néstor Espinoza, Andrés Jordán +13
We present a precise ground-based optical transmission spectrum of the hot-Saturn HATS-5b ( K), obtained as part of the ACCESS survey with the IMACS multi-object spec…
Hiding in plain sight: observing planet-starspot crossings with the James Webb Space Telescope
Giovanni Bruno, Nikole K. Lewis, Jeff A. Valenti +9
Transiting exoplanets orbiting active stars frequently occult starspots and faculae on the visible stellar disc. Such occultations are often rejected from spectrophotometric transi…
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…
Random Forests applied to High Precision Photometry Analysis with Spitzer IRAC
Jessica Krick, Jonathan Fraine, Jim Ingalls +1
We present a new method employing machine learning techniques for measuring astrophysical features by correcting systematics in IRAC high precision photometry using Random Forests.…
Transmission Spectroscopy of WASP-79b from 0.6 to 5.0 m
Kristin S. Sotzen, Kevin B. Stevenson, David K. Sing +18
As part of the PanCET program, we have conducted a spectroscopic study of WASP-79b, an inflated hot Jupiter orbiting an F-type star in Eridanus with a period of 3.66 days. Building…
Water Vapor and Clouds on the Habitable-Zone Sub-Neptune Exoplanet K2-18b
Björn Benneke, Ian Wong, Caroline Piaulet +13
Results from the Kepler mission indicate that the occurrence rate of small planets ( ) in the habitable zone of nearby low-mass stars may be as high as 80%. Despite t…
Astro2020 APC White Paper: Providing a Timely Review of Input Demographics to Advisory Committees
Dara Norman, Terri J. Brandt, Nancy D. Morrison +12
Organizations that support science (astronomy) such as federal agencies, research centers, observatories, academic institutions, societies, etc. employ advisory committees and boar…
Statistical Characterization of Hot Jupiter Atmospheres using Spitzer's Secondary Eclipses
Emily Garhart, Drake Deming, Avi Mandell +15
We report 78 secondary eclipse depths for a sample of 36 transiting hot Jupiters observed at 3.6- and 4.5 microns using the Spitzer Space Telescope. Our eclipse results for 27 of t…
Back to "Normal" for the Disintegrating Planet Candidate KIC 12557548 b
Everett Schlawin, Teruyuki Hirano, Hajime Kawahara +5
KIC 12557548 b is first of a growing class of intriguing disintegrating planet candidates, which lose mass in the form of a metal rich vapor that condenses into dust particles. Her…
Starspot occultations in infrared transit spectroscopy: the case of WASP-52b
Giovanni Bruno, Nikole K. Lewis, Kevin B. Stevenson +7
Stellar activity is one of the main obstacles to high-precision exoplanet observations and has motivated extensive studies in detection and characterization problems. Most efforts…
ACCESS: A featureless optical transmission spectrum for WASP-19b from Magellan/IMACS
Néstor Espinoza, Benjamin V. \ Rackham, Andrés Jordán +13
The short period (-day) transiting exoplanet WASP-19b is an exceptional target for transmission spectroscopy studies, due to its relatively large atmospheric scale-height ($\…
The need for a far-infrared cold space telescope to understand the chemistry of planet formation
Klaus M. Pontoppidan, Edwin A. Bergin, Gary Melnick +14
At a time when ALMA produces spectacular high resolution images of gas and dust in circumstellar disks, the next observational frontier in our understanding of planet formation and…
The Origins Space Telescope: Towards An Understanding of Temperate Planetary Atmospheres
Jonathan Fortney, Tiffany Kataria, Kevin Stevenson +46
The Origins Space Telescope (OST) is one of four mission concepts currently being studied by NASA in preparation for the Astrophysics 2020 Decadal Survey. With active cooling (~4 K…
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…
A comparative study of WASP-67b and HAT-P-38b from WFC3 data
Giovanni Bruno, Nikole K. Lewis, Kevin B. Stevenson +12
Atmospheric temperature and planetary gravity are thought to be the main parameters affecting cloud formation in giant exoplanet atmospheres. Recent attempts to understand cloud fo…
Statistical Analysis of Hubble/WFC3 Transit Spectroscopy of Extrasolar Planets
Guangwei Fu, Drake Deming, Heather Knutson +3
Transmission spectroscopy provides a window to study exoplanetary atmospheres, but that window is fogged by clouds and hazes. Clouds and haze introduce a degeneracy between the str…
Community targets for JWST's early release science program: evaluation of WASP-63b
Brian M. Kilpatrick, Patricio E. Cubillos, Kevin B. Stevenson +21
We present observations of WASP-63b by the Hubble Space Telescope (HST) as part of "A Preparatory Program to Identify the Single Best Transiting Exoplanet for JWST Early Release Sc…
ACCESS I: An Optical Transmission Spectrum of GJ 1214b Reveals a Heterogeneous Stellar Photosphere
Benjamin Rackham, Néstor Espinoza, Dániel Apai +8
GJ 1214b is the most studied sub-Neptune exoplanet to date. Recent measurements have shown its near-infrared transmission spectrum to be flat, pointing to a high-altitude opacity s…
Two NIRCam channels are Better than One: How JWST Can Do More Science with NIRCam's Short-Wavelength Dispersed Hartmann Sensor
Everett Schlawin, Marcia Rieke, Jarron Leisenring +8
The James Webb Space Telescope (JWST) offers unprecedented sensitivity, stability, and wavelength coverage for transiting exoplanet studies, opening up new avenues for measuring at…
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…
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…
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…
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…
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…