Context. The third Gaia data release (DR3) provides a wealth of new data products. The
early part of the release, Gaia EDR3, already provided the astrometric and photometric data …

Context. To calibrate automatic pipelines that determine atmospheric parameters of stars,
one needs a sample of stars, or “benchmark stars”, with well-defined parameters to be used …

We report the first detection of elements at all three r-process peaks in the metal-poor halo
star HD 160617. These elements include arsenic and selenium, which have not been …

Polaris is the nearest and brightest classical Cepheid, and pulsates with a period of about 4
d. It has long been known as a single-lined spectroscopic binary with an orbital period of 30 …

Context. Classical Cepheids are among the most important variable star types due to their
nature as standard candles and have a long history of modeling in terms of stellar evolution …

We used high-resolution spectra acquired with the Magellan Telescope to measure radial
and rotational velocities of approximately 200 stars in the Galactic globular cluster NGC …

We report the discovery by the HATSouth survey of HATS-3b, a transiting extrasolar planet
orbiting a V= 12.4 F dwarf star. HATS-3b has a period of P= 3.5479 days, mass of M p= 1.07 …

This paper describes the behavior of the rotational velocity in metal-poor stars ([Fe/H]⩽− 0.5
dex) in different evolutionary stages, based on vsin i values from the literature. Our sample is …

We present the multiple stellar systems observed within the SpHere INfrared survey for
Exoplanet (SHINE). SHINE searched for sub-stellar companions to young stars using high …

We report observations of the linear polarization of a sample of 50 nearby Southern bright
stars measured to a median sensitivity of∼ 4.4× 10− 6. We find larger polarizations and …