An overview of exoplanet biosignatures
In the last three decades, knowledge of planetary systems other than our own has increased
rapidly with the discovery of over 5,000 exoplanets (Christiansen 2022). These worlds vary …
rapidly with the discovery of over 5,000 exoplanets (Christiansen 2022). These worlds vary …
3D modelling of the impact of stellar activity on tidally locked terrestrial exoplanets: atmospheric composition and habitability
Stellar flares present challenges to the potential habitability of terrestrial planets orbiting M
dwarf stars through inducing changes in the atmospheric composition and irradiating the …
dwarf stars through inducing changes in the atmospheric composition and irradiating the …
Extending optical flare models to the UV: results from comparing of TESS and GALEX flare observations for M Dwarfs
The ultraviolet (UV) emission of stellar flares may have a pivotal role in the habitability of
rocky exoplanets around low-mass stars. Previous studies have used white-light …
rocky exoplanets around low-mass stars. Previous studies have used white-light …
Characterizing the Near-infrared Spectra of Flares from TRAPPIST-1 during JWST Transit Spectroscopy Observations
WS Howard, AF Kowalski, L Flagg… - The Astrophysical …, 2023 - iopscience.iop.org
We present the first analysis of JWST near-infrared spectroscopy of stellar flares from
TRAPPIST-1 during transits of rocky exoplanets. Four flares were observed from 0.6–2.8 μm …
TRAPPIST-1 during transits of rocky exoplanets. Four flares were observed from 0.6–2.8 μm …
No such thing as a simple flare: substructure and quasi-periodic pulsations observed in a statistical sample of 20 s cadence TESS flares
A 20 s cadence Transiting Exoplanet Survey Satellite monitoring campaign of 226 low-mass
flare stars during Cycle 3 recorded 3792 stellar flares of≥ 10 32 erg. We explore the time …
flare stars during Cycle 3 recorded 3792 stellar flares of≥ 10 32 erg. We explore the time …
Apache Point Observatory (APO)/SMARTS flare star campaign observations. I. Blue wing asymmetries in chromospheric lines during Mid-M-Dwarf flares from …
Y Notsu, AF Kowalski, H Maehara… - The Astrophysical …, 2024 - iopscience.iop.org
We conducted the time-resolved simultaneous optical spectroscopic and photometric
observations of mid-M-dwarf flare stars YZ CMi, EV Lac, and AD Leo. Spectroscopic …
observations of mid-M-dwarf flare stars YZ CMi, EV Lac, and AD Leo. Spectroscopic …
Lightning-induced chemistry on tidally-locked Earth-like exoplanets
Determining the habitability and interpreting atmospheric spectra of exoplanets requires
understanding their atmospheric physics and chemistry. We use a 3-D coupled climate …
understanding their atmospheric physics and chemistry. We use a 3-D coupled climate …
High-energy spectra of LTT 1445A and GJ 486 reveal flares and activity
The high-energy radiative output, from the X-ray to the ultraviolet, of exoplanet host stars
drives photochemical reactions and mass loss in the upper regions of planetary …
drives photochemical reactions and mass loss in the upper regions of planetary …
Bistability of the atmospheric circulation on TRAPPIST-1e
Using a 3D general circulation model, we demonstrate that a confirmed rocky exoplanet and
a primary observational target, TRAPPIST-1e presents an interesting case of climate …
a primary observational target, TRAPPIST-1e presents an interesting case of climate …
Impact of stellar flares on the chemical composition and transmission spectra of gaseous exoplanets orbiting M dwarfs
T Konings, R Baeyens, L Decin - Astronomy & Astrophysics, 2022 - aanda.org
Context. Stellar flares of active M dwarfs can affect the atmospheric composition of close-
orbiting gas giants, and can result in time-dependent transmission spectra. Aims. We aim to …
orbiting gas giants, and can result in time-dependent transmission spectra. Aims. We aim to …