activity
20162026
most citedTESS Hunt for Young and Maturing Exoplanets (THYME) III: a two-planet system in the 400 Myr Ursa Major Group

99 citations · 178 across the 16 of their papers we have counts for

collaborators

16 papers

astro-ph.IM2026

Early Exploration of the Scientific Discovery Space for the Habitable Worlds Observatory

Courtney D. Dressing, Danica Adams, Evelyne Alecian +324

The Habitable Worlds Observatory (HWO) is a future NASA flagship mission concept identified by the Astro2020 Decadal Survey as the highest priority for large space missions. HWO sh…

astro-ph.IM2026

A Critical UV Legacy: A Hubble Roadmap for HWO Science Readiness

Sarah Peacock, Aiden S. Zelakewicz, Lisa Kaltenegger +14

The Habitable Worlds Observatory (HWO) will provide the first opportunity to directly image and spectrally characterize terrestrial exoplanets in the habitable zones of nearby star…

astro-ph.IM2026

The role of the Hubble Space Telescope in advancing our understanding of atmospheric escape in exoplanets

Leonardo A. Dos Santos, Arika Egan, Kevin France +14

An important evolutionary pathway for planetary atmospheres is escape to space, which has been studied on Earth and Mars for several decades and more recently in exoplanets. A part…

astro-ph.IM2026

The unique ability of the Hubble Space Telescope to characterize young exoplanet environments

Keighley E. Rockcliffe, Allison Youngblood, Kevin France +10

The chemical and mass evolution of exoplanet atmospheres is shaped by their specific X-ray through ultraviolet (5 - 3200 Angstroms) irradiance history. X-ray and EUV (5 - 911 Angst…

astro-ph.EP2025

Ever Elusive Exospheres: One Probable Detection and Two Non-Detections of Hα Transits in Young Systems

Reilly P. Milburn, Andrew W. Mann, Keighley Rockcliffe +5

Gaps in the exoplanet population, such as the Neptunian Desert, point to the importance of mass-loss in sculpting the radii of close-in exoplanets. Young planets (500Myr) offer…

astro-ph.SR2025

HWO Target Stars and Systems: A Survey of Archival UV and X-ray Data

Sarah Peacock, David J. Wilson, Tyler Richey-Yowell +14

We assess archival high-energy data for key stars on the Habitable Worlds Observatory (HWO) Target Stars and Systems 2025 list, as stellar radiation is critical to shaping and inte…

astro-ph.IM2025★ 1 cited

Exoplanet Atmospheric Escape Observations with the Habitable Worlds Observatory

Leonardo A. Dos Santos, Eric D. Lopez, Luca Fossati +15

The Decadal Survey on Astronomy and Astrophysics 2020 highlights the importance of advancing research focused on discovering and characterizing habitable worlds. In line with this…

astro-ph.EP2025

Searching for helium escape and a low density atmosphere around the 120 Myr old sub-Neptune HIP94235b using CRIRES+

Ava Morrissey, George Zhou, Chelsea X. Huang +6

Atmospheric mass loss is thought to induce the bimodality in the small planet population as we observe it today. Observationally, active mass loss can be traced by excess absorptio…

astro-ph.EP2025★ 2 cited

Far-ultraviolet flares and variability of the young M dwarf AU Mic: a non-detection of planet c in transit at Lyman-alpha

Keighley E. Rockcliffe, Elisabeth R. Newton, Allison Youngblood +8

Atmospheric escape's potential to shape the exoplanet population motivates detailed observations of systems actively undergoing escape. AU Mic is a young and active M dwarf hosting…

astro-ph.EP2024

Searching for Neutral Hydrogen Escape from the 120 Myr Old Sub-Neptune HIP94235b using HST

Ava Morrissey, George Zhou, Chelsea X. Huang +9

HIP94235 b, a 120 Myr old sub-Neptune, provides us the unique opportunity to study mass loss at a pivotal stage of the system's evolution: the end of a 100 million year (Myr) old p…

astro-ph.EP2023★ 18 cited

The Variable Detection of Atmospheric Escape around the young, Hot Neptune AU Mic b

Keighley E. Rockcliffe, Elisabeth R. Newton, Allison Youngblood +5

Photoevaporation is a potential explanation for several features within exoplanet demographics. Atmospheric escape observed in young Neptune-sized exoplanets can provide insight in…

astro-ph.SR2022★ 6 cited

The Mysterious Affair of the H in AU Mic

Laura Flagg, Christopher Johns-Krull, Kevin France +8

Molecular hydrogen is the most abundant molecule in the Galaxy and plays important roles for planets, their circumstellar environments, and many of their host stars. We have confir…

astro-ph.EP2021★ 22 cited

A Lyman-alpha transit left undetected: the environment and atmospheric behavior of K2-25b

Keighley E. Rockcliffe, Elisabeth R. Newton, Allison Youngblood +6

K2-25b is a Neptune-sized exoplanet (3.45 Earth radii) that orbits its M4.5 host with a period of 3.48 days. Due to its membership in the Hyades Cluster, the system has a known age…

astro-ph.EP2020★ 29 cited

Zodiacal Exoplanets in Time. XI. The Orbit and Radiation Environment of the Young M Dwarf-Hosted Planet K2-25b

E. Gaidos, T. Hirano, D. J. Wilson +20

M dwarf stars are high-priority targets for searches for Earth-size and potentially Earth-like planets, but their planetary systems may form and evolve in very different circumstel…

astro-ph.EP2020★ 99 cited

TESS Hunt for Young and Maturing Exoplanets (THYME) III: a two-planet system in the 400 Myr Ursa Major Group

Andrew W. Mann, Marshall C. Johnson, Andrew Vanderburg +51

Exoplanets can evolve significantly between birth and maturity, as their atmospheres, orbits, and structures are shaped by their environment. Young planets (1 Gyr) offer an oppo…

nucl-th2016★ 1 cited

Partial restoration of chiral symmetry in hot and dense neutron matter

Jeremy W. Holt, Keighley E. Rockcliffe

We review efforts to describe the approach to chiral symmetry restoration in neutron matter from the low-energy realization of QCD, chiral effective field theory.