▪ Abstract Until the late 1990s the rich Hyades and the sparse UMa clusters were the only
coeval, comoving concentrations of stars known within 60 pc of Earth. Both are hundreds of …

The Sun's magnetic activity has steadily declined during its main-sequence life. While the
solar photospheric luminosity was about 30% lower 4.6 Gyr ago when the Sun arrived on …

BANYAN Σ is a new Bayesian algorithm to identify members of young stellar associations
within 150 pc of the Sun. It includes 27 young associations with ages in the range∼ 1–800 …

The last decade of direct imaging (DI) searches for sub-stellar companions has uncovered a
widely diverse sample that challenges the current formation models, while highlighting the …

We report on the results of the Sun in Time multiwavelength program (X-rays to UV) of solar
analogs with ages covering∼ 0.1–7 Gyr. The chief science goals are to study the solar …

Abstract Model atmosphere analyses of echelle spectra of some fifty nearby F-and G-type
stars are presented. The sample is confined to the main-sequence, turnoff and subgiant …

Abstract The Pulkovo Compilation of Radial Velocities (PCRV) has been made to study the
stellar kinematics in the local spiral arm. The PCRV contains weighted mean absolute radial …

CARMENES is a spectrograph for radial velocity surveys of M dwarfs with the aim of
detecting Earth-mass planets orbiting in the habitable zones of their host stars. To ensure an …

This is the first paper of a series aimed at studying the properties of late-type members of
young stellar kinematic groups. We concentrate our study on classical young moving groups …

Exoplanets can evolve significantly between birth and maturity, as their atmospheres, orbits,
and structures are shaped by their environment. Young planets (< 1 Gyr) offer an opportunity …