activity
20222026
most citedIdentification of carbon dioxide in an exoplanet atmosphere

193 citations · 494 across the 14 of their papers we have counts for

collaborators

15 papers

astro-ph.EP2026

A Spatial Map of the Atmospheric Limb of a Hot Jupiter

Lili Alderson, Hannah R. Wakeford, David Grant +18

Planets are inherently three-dimensional objects shaped by their thermal structure and dynamics. Observations of transiting exoplanets have begun to uncover this three-dimensional…

astro-ph.EP2025★ 25 cited

JWST-TST DREAMS: NIRSpec/PRISM Transmission Spectroscopy of the Habitable Zone Planet TRAPPIST-1 e

Néstor Espinoza, Natalie H. Allen, Ana Glidden +32

TRAPPIST-1 e is one of the very few rocky exoplanets that is both amenable to atmospheric characterization and that resides in the habitable zone of its star -- located at a distan…

astro-ph.EP2025★ 22 cited

JWST-TST DREAMS: Secondary Atmosphere Constraints for the Habitable Zone Planet TRAPPIST-1 e

Ana Glidden, Sukrit Ranjan, Sara Seager +25

The TRAPPIST-1 system offers one of the best opportunities to characterize temperate terrestrial planets beyond our own solar system. Within the TRAPPIST-1 system, planet e stands…

astro-ph.EP2025★ 1 cited

Modeling tails of escaping gas in exoplanet atmospheres with Harmonica

Carlos Gascón, Mercedes López-Morales, Shreyas Vissapragada +5

Exoplanets that reside close to their host stars, and therefore receive substantial amounts of X-ray and ultraviolet radiation, are prone to suffer from strong atmospheric escape.…

astro-ph.EP2024

JWST-TST DREAMS: A Super-Solar Metallicity in WASP-17 b Dayside Atmosphere from NIRISS SOSS Eclipse Spectroscopy

Amélie Gressier, Ryan J. MacDonald, Néstor Espinoza +26

We present the first emission spectrum of the hot Jupiter WASP-17 b using one eclipse observation from the JWST Near Infrared Imager and Slitless Spectrograph (NIRISS) Single Objec…

astro-ph.EP2024★ 11 cited

JWST-TST DREAMS: Non-Uniform Dayside Emission for WASP-17b from MIRI/LRS

Daniel Valentine, Hannah R. Wakeford, Ryan C. Challener +23

We present the first spectroscopic characterisation of the dayside atmosphere of WASP-17b in the mid-infrared using a single JWST MIRI/LRS eclipse observation. From forward-model f…

astro-ph.EP2024★ 50 cited

Quartz Clouds in the Dayside Atmosphere of the Quintessential Hot Jupiter HD 189733 b

Julie Inglis, Natasha E. Batalha, Nikole K. Lewis +16

Recent mid-infrared observations with JWST/MIRI have resulted in the first direct detections of absorption features from silicate clouds in the transmission spectra of two transiti…

astro-ph.IM2024★ 49 cited

ExoTiC-LD: thirty seconds to stellar limb-darkening coefficients

David Grant, Hannah R. Wakeford

Stellar limb darkening is the observed variation in brightness of a star between its centre and edge (or limb) when viewed in the plane of the sky. Stellar brightness is maximal at…

astro-ph.EP2024★ 62 cited

A Benchmark JWST Near-Infrared Spectrum for the Exoplanet WASP-39b

A. L. Carter, E. M. May, N. Espinoza +77

Observing exoplanets through transmission spectroscopy supplies detailed information on their atmospheric composition, physics, and chemistry. Prior to JWST, these observations wer…

astro-ph.EP2023

JWST-TST DREAMS: Quartz Clouds in the Atmosphere of WASP-17b

David Grant, Nikole K. Lewis, Hannah R. Wakeford +39

Clouds are prevalent in many of the exoplanet atmospheres that have been observed to date. For transiting exoplanets, we know if clouds are present because they mute spectral featu…

astro-ph.EP2023★ 22 cited

Detection of carbon monoxide's 4.6 micron fundamental band structure in WASP-39b's atmosphere with JWST NIRSpec G395H

David Grant, Joshua D. Lothringer, Hannah R. Wakeford +28

Carbon monoxide (CO) is predicted to be the dominant carbon-bearing molecule in giant planet atmospheres, and, along with water, is important for discerning the oxygen and therefor…

astro-ph.SR2023

MPS-ATLAS library of stellar model atmospheres and spectra

N. Kostogryz, A. I Shapiro, V. Witzke +5

Stellar spectra contain a large amount of information about the conditions in stellar atmospheres. However, extracting this information is challenging and demands comprehensive num…

astro-ph.EP2022★ 22 cited

Transmission strings: a technique for spatially mapping exoplanet atmospheres around their terminators

David Grant, Hannah R. Wakeford

Exoplanet transmission spectra, which measure the absorption of light passing through a planet's atmosphere during transit, are most often assessed globally, resulting in a single…

astro-ph.EP2022★ 193 cited

Identification of carbon dioxide in an exoplanet atmosphere

The JWST Transiting Exoplanet Community Early Release Science Team, Eva-Maria Ahrer, Lili Alderson +129

Carbon dioxide (CO2) is a key chemical species that is found in a wide range of planetary atmospheres. In the context of exoplanets, CO2 is an indicator of the metal enrichment (i.…

astro-ph.EP2022★ 37 cited

A Comprehensive Analysis of WASP-17b's Transmission Spectrum from Space-Based Observations

L. Alderson, H. R. Wakeford, R. J. MacDonald +9

Due to its 1770 K equilibrium temperature, WASP-17b, a 1.99 , 0.486 exoplanet, sits at the critical juncture between hot and ultra-hot Jupiters. We…