Until the last few decades, investigations of stellar interiors had been restricted to theoretical
studies only constrained by observations of their global properties and external …

The internal properties of stars in the red-giant phase undergo significant changes on
relatively short timescales. Long near-uninterrupted high-precision photometric timeseries …

PLATO 2.0 has recently been selected for ESA's M3 launch opportunity (2022/24). Providing
accurate key planet parameters (radius, mass, density and age) in statistical numbers, it …

Context. The space mission Kepler provides us with long and uninterrupted photometric time
series of red giants. We are now able to probe the rotational behaviour in their deep interiors …

Ensemble studies of red-giant stars with exquisite asteroseismic (Kepler), spectroscopic
(APOGEE), and astrometric (Gaia) constraints offer a novel opportunity to recast and …

The advent of space-based missions like Kepler has revolutionized the study of solar-type
stars, particularly through the measurement and modeling of their resonant modes of …

Asteroseismic parameters allow us to measure the basic stellar properties of field giants
observed far across the Galaxy. Most of such determinations are, up to now, based on …

Context. The long and almost continuous observations by Kepler show clear evidence of a
granulation background signal in a large sample of stars, which is interpreted as the surface …

Stars hosting hot Jupiters are often observed to have high obliquities, whereas stars with
multiple coplanar planets have been seen to have low obliquities. This has been interpreted …

Context. The detection of oscillations with a mixed character in subgiants and red giants
allows us to probe the physical conditions in their cores. Aims. With these mixed modes, we …