5 papers
Optomechanical Design of the MANTIS SmallSat: An Extreme-, Far- and Near-Ultraviolet Spectrograph for Exoplanet Host Stars
Brian Fleming, Briana Indahl, Dmitry Vorobiev +16
The MANTIS (Monitoring Activity of Nearby sTars with uv Imaging and Spectroscopy) observatory is a compact, multi-instrument small satellite designed for simultaneous extreme- (EUV…
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…
X-ray and UV Observations of the Young Sun HIP~67522: Evidence of Lyman-alpha Absorption Within the Planetary System
Cynthia S. Froning, Allison Youngblood, David J. Wilson +7
We present ultraviolet (UV) spectroscopy of the 17 Myr, G0V star, HIP 67522. The UV spectrum is characterized by strong chromospheric and transition region emission lines. There wa…
Measurements of three exo-planetesimal compositions: a planetary core, a chondritic body, and an icy Kuiper belt analogue
Jamie T. Williams, Boris T. Gänsicke, Snehalata Sahu +6
The study of planetesimal debris accreted by white dwarfs offers unique insights into the composition of exoplanets. Using far-ultraviolet and optical spectroscopy, we have analyse…
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 transmiss…