88 citations · 497 across the 31 of their papers we have counts for
14 papers · 1 filter
ESCAPE: a small explorer mission to study the stellar drivers of exoplanet evolution
Allison Youngblood, Kevin France, Brian Fleming +37
The long-term stability of exoplanetary atmospheres depends critically on the extreme-ultraviolet (EUV) photon and high-energy particle fluxes from the host star, which are poorly…
Investigating the High-energy Radiation Environment of Planets in Sun-like Binary Systems
Patrick R. Behr, Kevin France, Nicholas Kruczek +6
Far-ultraviolet (FUV) radiation is a driving source of photochemistry in planetary atmospheres. Proper interpretation of atmospheric observations requires a full understanding of t…
The MUSCLES Extension for Atmospheric Transmission Spectroscopy: Spectral energy distributions for 20 exoplanet host stars that JWST observed in Cycle 1
David J. Wilson, Allison Youngblood, Girish M. Duvvuri +11
Correctly interpreting JWST spectra of close-in exoplanets requires a measurement of the X-ray and ultraviolet light that the planets receive from their host stars. Here we provide…
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…
The Mega-MUSCLES Treasury Survey: X-ray to infrared Spectral Energy Distributions of a representative sample of M dwarfs
David J. Wilson, Cynthia S. Froning, Girish M. Duvvuri +15
We present 5-1x10^7 Angstrom spectral energy distributions (SEDs) for twelve M dwarf stars covering spectral types M0-M8. Our SEDs are provided for community use as a sequel to the…
The Thermal Emission Spectrum of the Nearby Rocky Exoplanet LTT 1445A b from JWST MIRI/LRS
Patcharapol Wachiraphan, Zachory K. Berta-Thompson, Hannah Diamond-Lowe +7
The nearby transiting rocky exoplanet LTT 1445A b presents an ideal target for studying atmospheric retention in terrestrial planets orbiting M dwarfs. It is cooler than many rocky…
The Featherweight Giant: Unraveling the Atmosphere of a 17 Myr Planet with JWST
Pa Chia Thao, Andrew W. Mann, Adina D. Feinstein +29
The characterization of young planets (< 300 Myr) is pivotal for understanding planet formation and evolution. We present the 3-5m transmission spectrum of the 17 Myr, Jupiter-s…
Constraining atmospheric composition from the outflow: helium observations reveal the fundamental properties of two planets straddling the radius gap
Michael Zhang, Jacob L. Bean, David Wilson +13
TOI-836 is a ~2-3 Gyr K dwarf with an inner super Earth (, d) and an outer mini Neptune (, d). JWST/NIRSpec 2.8--5.2 m transmissi…
High-energy spectra of LTT 1445A and GJ 486 reveal flares and activity
H. Diamond-Lowe, G. W. King, A. Youngblood +19
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 atmosphe…
The dynamics of self-gravity wakes in the Mimas 5:3 bending wave: modifying the linear theory
Daniel D. Sega, Glen. Stewart, Josh E. Colwell +3
The satellite Mimas launches a bending wave -- a warping of the rings that propagates radially through self-gravity -- at the 5:3 inner vertical resonance with Saturn's rings. We p…
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…
The High-Energy Radiation Environment Around a 10 Gyr M Dwarf: Habitable at Last?
Kevin France, Girish Duvvuri, Hilary Egan +20
High levels of X-ray and UV activity on young M dwarfs may drive rapid atmospheric escape on temperate, terrestrial planets orbiting within the liquid water habitable zone. However…
Necroplanetology: Simulating the Tidal Disruption of Differentiated Planetary Material Orbiting WD 1145+017
Girish M. Duvvuri, Seth Redfield, Dimitri Veras
The WD 1145+017 system shows irregular transit features that are consistent with the tidal disruption of differentiated asteroids with bulk densities g cm and bulk mas…
Three Small Super-Earths Transiting the nearby star GJ 9827
Prajwal Niraula, Seth Redfield, Fei Dai +25
We report on the discovery of three transiting planets around GJ~9827. The planets have radii of 1.75, 1.36, and 2.10~…