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20242026
most citedUsing the helium triplet as a tracer of the physics of giant planet outflows

10 citations · 12 across the 7 of their papers we have counts for

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7 papers · 1 filter

astro-ph.EP2026

Hydrogen airglow from an escaping ultrahot Jupiter atmosphere

Yapeng Zhang, Chenliang Huang, Aaron Householder +17

Intense high-energy irradiation of close-in gaseous exoplanets drives the rapid escape of their atmospheres, fundamentally shaping planetary demographics. While atmospheric loss is…

astro-ph.EP2026★ 1 cited

Photochemical CS Gas Detected on a 20-Myr-old Exoplanet

Fei Dai, Erik Petigura, John Livingston +6

Probing the atmospheres of young exoplanets offers a powerful window into how planetary systems evolve and the physical and chemical processes that drive those early evolutions. We…

astro-ph.EP2026

BOWIE-ALIGN: Exploring degeneracies in the muted transmission spectrum of the aligned hot Jupiter NGTS-2b with NIRSpec/G395H

Charlotte Fairman, Hannah R. Wakeford, Alastair B. Claringbold +15

We present the first atmospheric observation and characterisation of the aligned, 1468 K hot Jupiter, NGTS-2b, with one JWST NIRSpec/G395H transit. These observations complete the…

astro-ph.EP2026★ 1 cited

Oxygen left behind: Atmospheric Enrichment due to Fractionation in Sub-Neptunes using BOREAS

Marilina Valatsou, Caroline Dorn, Pierlou Marty +1

The evolution of exoplanetary atmospheres is strongly influenced by atmospheric escape, particularly for close-in planets. Fractionation during atmospheric loss can preferentially…

astro-ph.EP2025

Efficient and inefficient hydrodynamic escape of exo-satellite atmospheres driven by irradiation from their young giant planets

Matthäus Schulik, James E. Owen, Richard A. Booth +2

The bolometric radiation from a central body is potentially a powerful driver of atmospheric escape from planets or satellites. When heated above their equilibrium temperatures tho…

astro-ph.EP2025

Understanding what helium absorption tells us about atmospheric escape from exoplanets

Giulia Ballabio, James E. Owen

Atmospheric escape is now considered the major contributing factor in shaping the demographic of detected exoplanets. However, inferences about the exoplanet populations strongly d…

astro-ph.EP2024★ 10 cited

Using the helium triplet as a tracer of the physics of giant planet outflows

Matthäus Schulik, James Owen

Hydrodynamic outflows, such as those observed escaping close-in gas giant planets, are not isothermal in structure. Their highly ionized nature allows them to cool adiabatically at…