7 papers
Preparing for the Early eVolution Explorer: The Impact of Flare Temperature on Ozone Column Depth in Earth-Like Atmospheres
Jaime S. Crouse, Nicholas F. Wogan, Ward S. Howard +4
Atmospheric photochemical models incorporating the impacts of stellar flares often assume a 9,000 K spectrum at ultraviolet-optical wavelengths. Recent multiwavelength observ…
Preparing for the Early eVolution Explorer: Photometric Diagnostics of Magnetospheric Accretion Geometry in Young Stellar Objects
Laura Venuti, Connor E. Robinson, Ann Marie Cody +13
The inner disk truncation radius, , plays a crucial role in the regulation of star-disk interaction and the early evolution of star-disk-planet systems; however, measuring thi…
Preparing for the Early eVolution Explorer: Detecting the Primordial, Transiting Exoplanet Population
George Zhou, James G. Rogers, Jennifer A. Burt +17
The close-in small planet population may be formed either with hydrogen/helium dominated envelopes or with water-rich interiors. Both scenarios reproduce the present day planet pop…
Separating flare and secondary atmospheric signals with RADYN modeling of near-infrared JWST transmission spectroscopy observations of TRAPPIST-1
Ward S. Howard, Adam F. Kowalski, Michael Radica +10
Although TRAPPIST-1's temperate planets have the highest transmission signals of any known system, flares contaminate 50-70% of transits at the 1000 ppm level, far above 100 ppm se…
TESS Discovers a Second System of Transiting Exocomets in the Extreme Debris Disk of RZ Psc
Adalyn Gibson, Meredith A. MacGregor, Ward S. Howard +9
We present the TESS discovery of only the second system of transiting exocomets with a sufficient number of events to measure the size distribution in the RZ Psc system, enabling c…
Flares on TRAPPIST-1 reveal the spectrum of magnetic features on its surface
Valeriy Vasilyev, Nadiia Kostogryz, Alexander I. Shapiro +11
TRAPPIST-1 is an M8 dwarf hosting seven known exoplanets and is currently one of the most frequently observed targets of the James Webb Space Telescope (JWST). However, it is notor…