Mercury–manganese (HgMn) stars are late-B upper main sequence chemically peculiar
stars distinguished by large overabundances of heavy elements, slow rotation, and frequent …

Global magnetic fields of active solar-like stars are, nowadays, routinely detected with
spectropolarimetric measurements and are mapped with Zeeman Doppler imaging (ZDI) …

ABSTRACT Recently, high-precision optical 2-min cadence light curves obtained with TESS
for targets located in the mission's defined first four sectors have been released. The majority …

The Kepler mission revealed a plethora of stellar variability in the light curves of many stars,
some associated with magnetic activity or stellar oscillations. In this work, we analyse the …

In this chapter we discuss the problem of reconstructing two-dimensional stellar surface
maps from the variability of intensity and/or polarisation profiles of spectral lines. We start by …

The magnetic Ap or CP2 stars are natural atomic and magnetic laboratories. Strictly periodic
changes are observed in the spectra and brightness of these stars, which allow the …

Aims. The present work presents our efforts at identifying new mercury-manganese
(HgMn/CP3) stars using spectra obtained with the Large Sky Area Multi-Object Fiber …

Context. Doppler imaging (DI) is a powerful spectroscopic inversion technique that enables
conversion of a line profile time series into a two-dimensional map of the stellar surface …

Context. The Magnetism in Massive Stars (MiMeS) project aims at understanding the origin
of the magnetic fields in massive stars as well as their impact on stellar internal structure …

We review magnetic-field measurements of nondegenerate stars across the Hertzprung–
Russell diagram for main sequence, premain sequence, and postmain sequence stars. For …