activity
20152026
most citedIdentification of carbon dioxide in an exoplanet atmosphere

193 citations · 1.5k across the 43 of their papers we have counts for

collaborators

46 papers

astro-ph.EP2026

Thermal Evolution of Lava Planets Across System Ages: Predictions for Hell of a Survey

Mariana Sastre, Tim Lichtenberg, Lisa Dang +22

Ultra-short-period (USP) rocky exoplanets can have dayside temperatures high enough to maintain permanent magma oceans, sitting at the intersection of interior geophysics and atmos…

astro-ph.EP2026

No statistically significant evidence for a correlation between stellar and planetary composition

Daisy A. Turner, Annelies Mortier, James G. Rogers +4

The chemical compositions of planets and their hosts stars are intrinsically linked, having formed from the same protostellar material. Characterising this relationship provides ke…

astro-ph.EP2026

Evolutionary pathways toward survival of a thick CO2- or SO2-rich atmosphere on the lava world TOI-561 b

Emma Postolec, Tim Lichtenberg, Johanna K. Teske +10

Rocky planets evolve through the exchange of volatiles between their interiors and atmospheres, an interplay still poorly constrained by observations. Remarkably, highly irradiated…

astro-ph.EP2026

JWST MIRI reveals a potential atmosphere on the ultra-hot rocky planet TOI-431b

Cole Smith, Brandon Park Coy, Megan Weiner Mansfield +13

An open question in exoplanet science is whether rocky exoplanets extremely close in to their host stars, `lava worlds', can retain significant atmospheres. Thermal emission observ…

astro-ph.EP2026

A Highly Reflective Atmosphere on the Lava World TOI-561b Revealed by JWST/NIRSpec Phase Curve

Samuel Boucher, Lisa Dang, Alex McGinty +15

Ultra-short period (USP) rocky planets are expected to be depleted of any substantial gaseous envelope due to the intense irradiation they receive from their host star, making the…

astro-ph.EP2026

GEMS JWST: Hold on to your HATS(-6 b), a sub-solar metallicity giant planet with water, methane and ammonia in its atmosphere

Giannina Guzmán Caloca, Caleb I. Cañas, Nicole L. Wallack +16

HATS-6 b is one of several recently discovered Giant Exoplanets orbiting M-dwarf Stars (GEMS) and is part of a JWST survey that aims to compare bulk and atmospheric properties of t…

astro-ph.EP2026

Phase-dependent chemistry of WASP-43 b revealed with a suite of one-, two-, and three-dimensional models

Robin Baeyens, Julianne I. Moses, Jasmina Blecic +17

Our goal is to investigate the chemistry of the hot Jupiter WASP-43 b in detail using theoretical models, considering the constraints of the James Webb Space Telescope MIRI phase c…

astro-ph.EP2026

Understanding eccentric temperate giants: an in-depth study of the architecture and stellar obliquity of the TOI-2134 system

Federica Rescigno, Manu Stalport, Ancy Anna John +28

We revisit the TOI-2134 planetary system with three new high-cadence TESS sectors and 98 more spectra. This new analysis confirms the two orbiting planets by simultaneously modelli…

astro-ph.EP2026

GEMS JWST: HATS-75 b -- A giant planet with a sub-solar metallicity atmosphere orbiting an M-dwarf

Reza Ashtari, Jacob Lustig-Yaeger, Jessica Libby-Roberts +12

HATS-75 b is one of the recently discovered Giant Exoplanets orbiting M-dwarf Stars (GEMS) with a transmission spectrum shaped by both its atmosphere and the active stellar surface…

astro-ph.EP2026★ 3 cited

Evidence for an Atmosphere on the Ultra-Short Period super-Earth HD 3167 b

Brandon Park Coy, Qiao Xue, Megan Weiner Mansfield +14

'Lava worlds'-Earth-sized planets hot enough (Teq >~ 1100 K) to melt their dayside silicate surfaces-have emerged as promising candidates for atmospheric detection and characteriza…

astro-ph.EP2026

GEMS JWST: A sub-Solar metallicity atmosphere for giant planet TOI-5293Ab orbiting a rapidly changing M-dwarf

Shubham Kanodia, Caleb I. Cañas, Jacob Lustig-Yaeger +13

The growing sample of Giant Exoplanets around M-dwarf Stars (GEMS) helps probe the extremes of giant planet formation. Comparing the properties of this sample with their FGK counte…

astro-ph.EP2025★ 6 cited

Horizontal and vertical exoplanet thermal structure from a JWST spectroscopic eclipse map

Ryan C. Challener, Megan Weiner Mansfield, Patricio E. Cubillos +33

Highly-irradiated giant exoplanets known as "ultra-hot Jupiters" are anticipated to exhibit large variations of atmospheric temperature and chemistry as a function of longitude, la…

astro-ph.EP2025★ 14 cited

Magma ocean interactions can explain JWST observations of the sub-Neptune TOI-270 d

Matthew C. Nixon, R. Sander Somers, Arjun B. Savel +9

Sub-Neptunes with substantial atmospheres may possess magma oceans in contact with the overlying gas, with chemical interactions between the atmosphere and magma playing an importa…

astro-ph.EP2025

A Thick Volatile Atmosphere on the Ultrahot Super-Earth TOI-561 b

Johanna K. Teske, Nicole L. Wallack, Anjali A. A. Piette +10

Ultrashort-period (USP) exoplanets -- with R and periods 1 day -- are expected to be stripped of volatile atmospheres by intense host star irradiation…

astro-ph.EP2025

A carbon-rich atmosphere on a windy pulsar planet

Michael Zhang, Maya Beleznay, Timothy D. Brandt +17

A handful of enigmatic Jupiter-mass objects have been discovered orbiting pulsars. One such object, PSR\,J2322-2650b, uniquely resembles a hot Jupiter exoplanet due to its minimum…

astro-ph.EP2025

SiO and a super-stellar C/O ratio in the atmosphere of the giant exoplanet WASP-121b

Thomas M. Evans-Soma, David K. Sing, Joanna K. Barstow +15

Refractory elements such as iron, magnesium, and silicon can be detected in the atmospheres of ultrahot giant planets. This provides an opportunity to quantify the amount of refrac…

astro-ph.EP2025★ 1 cited

On Linking Planet Formation Models, Protoplanetary Disk Properties, and Mature Gas Giant Exoplanet Atmospheres

Adina D. Feinstein, Richard A. Booth, Jennifer B. Bergner +34

Measuring a single elemental ratio (e.g., carbon-to-oxygen) provides insufficient information for understanding the formation mechanisms and evolution that affect our observations…

astro-ph.EP2025

New Constraints on DMS and DMDS in the Atmosphere of K2-18 b from JWST MIRI

Nikku Madhusudhan, Savvas Constantinou, Måns Holmberg +3

The sub-Neptune frontier has opened a new window into the rich diversity of planetary environments beyond the solar system. The possibility of hycean worlds, with planet-wide ocean…

astro-ph.EP2025

TOI-6478 b: a cold under-dense Neptune transiting a fully convective M dwarf from the thick disc

Madison G. Scott, Amaury H. M. J. Triaud, Khalid Barkaoui +25

Growing numbers of exoplanet detections continue to reveal the diverse nature of planetary systems. Planet formation around late-type M dwarfs is of particular interest. These syst…

astro-ph.EP2025

The radiative effects of photochemical hazes on the atmospheric circulation and phase curves of sub-Neptunes

Maria E. Steinrueck, Vivien Parmentier, Laura Kreidberg +13

Measuring the atmospheric composition of hazy sub-Neptunes like GJ~1214b through transmission spectroscopy is difficult because of the degeneracy between mean molecular weight and…

astro-ph.EP2025★ 14 cited

Clouds and Hazes in GJ 1214b's Metal-Rich Atmosphere

Isaac Malsky, Emily Rauscher, Kevin Stevenson +10

The sub-Neptune GJ 1214b has an infamously flat transmission spectrum, likely due to thick aerosols in its atmosphere. A recent JWST MIRI spectroscopic phase curve of GJ 1214 b add…

astro-ph.EP2025★ 6 cited

GEMS JWST: Transmission spectroscopy of TOI-5205b reveals significant stellar contamination and a metal-poor atmosphere

Caleb I. Cañas, Jacob Lustig-Yaeger, Shang-Min Tsai +21

Recent discoveries of transiting giant exoplanets () around M dwarfs (GEMS) present an opportunity to investigate their atmospheric compositions and…

astro-ph.EP2024

New insights into the internal structure of GJ 1214 b informed by JWST

Matthew C. Nixon, Anjali A. A. Piette, Eliza M. -R. Kempton +7

Recent JWST observations of the sub-Neptune GJ 1214 b suggest that it hosts a high-metallicity (>100x solar), hazy atmosphere. Emission spectra of the planet show molecular absorpt…

astro-ph.EP2024★ 96 cited

Sulphur dioxide in the mid-infrared transmission spectrum of WASP-39b

Diana Powell, Adina D. Feinstein, Elspeth K. H. Lee +70

The recent inference of sulphur dioxide (SO) in the atmosphere of the hot (1100 K), Saturn-mass exoplanet WASP-39b from near-infrared JWST observations suggests that phot…