The coronal activity–rotation relationship is considered to be a proxy for the underlying
stellar dynamo responsible for magnetic activity in solar and late-type stars. While this has …

We combine optical, near-infrared, and mid-infrared spectra and photometry to construct
expanded spectral energy distributions for 145 field age (> 500 Myr) and 53 young (lower …

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 present results of the largest, most comprehensive study ever done of the stellar
multiplicity of the most common stars in the Galaxy, the red dwarfs. We have conducted an …

Context. The nearest stars provide a fundamental constraint for our understanding of stellar
physics and the Galaxy. The nearby sample serves as an anchor where all objects can be …

We present a mass–luminosity relation (MLR) for red dwarfs spanning a range of masses
from 0.62${{\mathcal M}} _ {\odot} $ to the end of the stellar main sequence at …

We present K-band spectra for 133 nearby (d< 33 ps) M dwarfs, including 18 M dwarfs with
reliable metallicity estimates (as inferred from an FGK type companion), 11 M dwarf planet …

Aims. We investigate the photometric modulation induced by magnetic activity cycles and
study the relationship between rotation period and activity cycle (s) in late-type (FGKM) stars …

We present the discovery of another seven Y dwarfs from the Wide-field Infrared Survey
Explorer (WISE). Using these objects, as well as the first six WISE Y dwarf discoveries from …

Spectroscopy of transiting exoplanets can be used to investigate their atmospheric
properties and habitability. Combining radial velocity (RV) and transit data provides …