High-resolution UV spectra of stellar H i Lyα lines from the Hubble Space Telescope (HST)
provide observational constraints on the winds of coronal main-sequence stars, thanks to an …

M dwarfs dominate the stellar population, accounting for three of every four stars, the nearest
of which is Proxima Centauri, the closest destination beyond our Solar System. These cool …

The upcoming deployment of the James Webb Space Telescope will dramatically advance
our ability to characterize exoplanet atmospheres, both in terms of precision and sensitivity …

Multiplanet systems orbiting M dwarfs provide valuable tests of theories of small-planet
formation and evolution. K2-3 is an early M dwarf hosting three small exoplanets (1.5–2.0 …

Transmission spectroscopy of transiting exoplanets is a proven technique that can yield
information on the composition and structure of a planet's atmosphere. However …

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 …

We present the first results of our ongoing project conducting simultaneous multiwavelength
observations of flares on nearby active M dwarfs. We acquired data of the nearby dM3. 5e …

Accurate stellar properties are essential for precise stellar astrophysics and exoplanetary
science. In the M-dwarf regime, much effort has gone into defining empirical relations that …

We confirm the planetary nature of two gas giants discovered by TESS to transit M dwarfs
with stellar companions at wide separations. TOI-3984 A (J= 11.93) is an M4 dwarf hosting a …

We have performed a search for flares and quasi-periodic pulsations (QPPs) from low-mass
M-dwarf stars using Transient Exoplanet Survey Satellite (TESS) two-minute cadence data …