activity
20142026
most citedHelium in the eroding atmosphere of an exoplanet

368 citations · 2k across the 54 of their papers we have counts for

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Showing 2025Show all

6 papers · 1 filter

astro-ph.SR2025

Gray Spectral Variability in Three Brown Dwarfs Observed by HST/WFC3 Time-Series Observations

Madalyn F. Chapleski, Yifan Zhou

The L/T transition is a critical evolutionary stage for brown dwarfs and self-luminous giant planets. L/T transition brown dwarfs are more likely to be spectroscopically variable,…

astro-ph.EP2025★ 3 cited

Sensitivity to Sub-Io-sized Exosatellite Transits in the MIRI LRS Lightcurve of the Nearest Substellar Worlds

Andrew Householder, Mary Anne Limbach, Beth Biller +20

JWST's unprecedented sensitivity enables precise spectrophotometric monitoring of substellar worlds, revealing atmospheric variability driven by mechanisms operating across differe…

astro-ph.EP2025

Seismic Oscillations Excited by Giant Impacts in Directly-Imaged Giant Planets

J. J. Zanazzi, Eugene Chiang, Yifan Zhou

The radii and masses of many giant exoplanets imply their interiors each contain more than 100 of solids. A large metal content may arise when a giant planet grows…

astro-ph.EP2025

H Variability of AB Aur b with the Hubble Space Telescope: Probing the Nature of a Protoplanet Candidate with Accretion Light Echoes

Brendan P. Bowler, Yifan Zhou, Lauren I. Biddle +11

Giant planets generate accretion luminosity as they form. Much of this energy is radiated in strong H line emission, which has motivated direct imaging surveys at optical wavele…

astro-ph.EP2025★ 17 cited

Evidence for Variable Accretion onto PDS 70 c and Implications for Protoplanet Detections

Yifan Zhou, Brendan P. Bowler, Aniket Sanghi +14

Understanding the processes of planet formation and accretion in young systems is essential to unraveling the initial conditions of planetary systems. The PDS 70 system, which host…

astro-ph.SR2025★ 1 cited

Phase-resolved Hubble Space Telescope WFC3 Spectroscopy of Weakly-Irradiated Brown Dwarf GD 1400 and Energy Redistribution-Irradiation Trends in Six WDBD Binaries

Rachael C. Amaro, Dániel Apai, Yifan Zhou +8

Irradiated brown dwarfs offer a unique opportunity to bridge the gap between stellar and planetary atmospheres. We present high-quality /WFC3/G141 phase-resolved spec…