Determining the sequence of events in the formation of stars and planetary systems and
their timescales is essential for understanding those processes, yet establishing ages is …

The discovery of lithium-rich giants contradicts expectations from canonical stellar evolution.
Here we report on the serendipitous discovery of 20 Li-rich giants observed during the Gaia …

Aims. We study the dependence of protoplanetary disk evolution on stellar mass using a
large sample of young stellar objects in nearby young star-forming regions. Methods. We …

Context. We have obtained precise radial velocities for a sample of 373 G and K type giants
at Lick Observatory regularly over more than 12 years. Planets have been identified around …

We have derived ages for 13 young (< 30 Myr) star-forming regions and find that they are up
to a factor of 2 older than the ages typically adopted in the literature. This result has wide …

Context. This is the fourth paper in a series showing the results of planet population
synthesis calculations. In Paper I, we presented our methods. In Paper II, we compared the …

In contrast to the water-poor planets of the inner Solar System, stochasticity during planetary
formation, and order-of-magnitude deviations in exoplanet volatile contents suggest that …

Aims. We present an extended grid of state-of-the art stellar models for low-mass stars
including updated physics (nuclear reaction rates, surface boundary condition, mass-loss …

We present an analysis of∼ 5 years of Lick Observatory radial velocity measurements
targeting a uniform sample of 31 intermediate-mass (IM) subgiants (1.5≲ M*/M☉≲ 2.0) with …

Photometric detections of dust circumstellar discs around pre-main sequence (PMS) stars,
coupled with estimates of stellar ages, provide constraints on the time available for planet …