Accretion through circumstellar disks plays an important role in star formation and in
establishing the properties of the regions in which planets form and migrate. The …

We present an attempt to reconstruct the complete evolutionary path followed by cataclysmic
variables (CVs), based on the observed mass–radius relationship of their donor stars. Along …

The high-energy emission from low-mass stars is mediated by the magnetic dynamo.
Although the mechanisms by which fully convective stars generate large-scale magnetic …

How has the solar wind evolved to reach what it is today? In this review, I discuss the long-
term evolution of the solar wind, including the evolution of observed properties that are …

The Sun and other stars are magnetic: magnetism pervades their interiors and affects their
evolution in a variety of ways. In the Sun, both the fields themselves and their influence on …

Magnetic fields play a fundamental role for interior and atmospheric properties of M dwarfs
and greatly influence terrestrial planets orbiting in the habitable zones of these low-mass …

Rotation is a directly observable stellar property, and it drives magnetic field generation and
activity through a magnetic dynamo. Main-sequence stars with masses below approximately …

We determined effective temperatures, surface gravities, and metallicities for a sample of
343 M dwarfs observed with CARMENES, the double-channel, high-resolution spectrograph …

We analyzed Kepler short-cadence M dwarf observations. Spectra from the Astrophysical
Research Consortium 3.5 m telescope identify magnetically active (Hα in emission) stars …

We present here the final results of the first spectropolarimetric survey of a small sample of
active M dwarfs, aimed at providing observational constraints on dynamo action on both …