CubeSats are small satellites built in standard sizes and form factors, which have been
growing in popularity but have thus far been largely ignored within the field of astronomy …

We report initial results of a large radial velocity survey of K dwarfs up to a distance of 50 pc
from the solar system, to look for stellar, brown dwarf, and Jovian planets using radial …

Measured spectral shifts due to intrinsic stellar variability (eg, pulsations, granulation) and
activity (eg, spots, plages) are the largest source of error for extreme-precision radial-velocity …

Cool main-sequence stars, such as the Sun, have magnetic fields which are generated by
an internal dynamo mechanism. In the Sun, the dynamo mechanism produces a balance …

Photospheric velocities and stellar activity features such as spots and faculae produce
measurable radial velocity signals that currently obscure the detection of sub-meter-per …

Starspots, plages, and activity cycles cause radial velocity variations that can either mimic
planets or hide their existence. To verify the authenticity of newly discovered planets …

HD 189733 b is one of the most well studied exoplanets due to its large transit depth and
host star brightness. The focus on this object has produced a number of high-cadence transit …

Stellar activity interferes with precise radial velocity measurements and limits our ability to
detect and characterize planets, in particular Earth-like planets. We introduce AESTRA (Auto …

The distortions of absorption line profiles caused by photospheric brightness variations on
the surfaces of cool, main-sequence stars can mimic or overwhelm radial velocity (RV) shifts …

We present the first Atacama Large Millimeter/submillimeter Array (ALMA) observations of
the closest known extrasolar debris disc. This disc orbits the star ε Eri, a K-type star just 3.2 …