TESS survey of rotational and pulsational variability of mercury–manganese stars
Mercury–manganese (HgMn) stars are late-B upper main sequence chemically peculiar
stars distinguished by large overabundances of heavy elements, slow rotation, and frequent …
stars distinguished by large overabundances of heavy elements, slow rotation, and frequent …
Hidden magnetic fields of young suns
O Kochukhov, T Hackman, JJ Lehtinen… - Astronomy & …, 2020 - aanda.org
Global magnetic fields of active solar-like stars are, nowadays, routinely detected with
spectropolarimetric measurements and are mapped with Zeeman Doppler imaging (ZDI) …
spectropolarimetric measurements and are mapped with Zeeman Doppler imaging (ZDI) …
MOBSTER – II. Identification of rotationally variable A stars observed with TESS in sectors 1–4
J Sikora, A David-Uraz, S Chowdhury… - Monthly Notices of …, 2019 - academic.oup.com
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 …
for targets located in the mission's defined first four sectors have been released. The majority …
Rotational modulation in A and F stars: magnetic stellar spots or convective core rotation?
AI Henriksen, V Antoci, H Saio… - Monthly Notices of …, 2023 - academic.oup.com
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 …
some associated with magnetic activity or stellar oscillations. In this work, we analyse the …
Doppler and Zeeman Doppler imaging of stars
O Kochukhov - Cartography of the Sun and the Stars, 2016 - Springer
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 …
maps from the variability of intensity and/or polarisation profiles of spectral lines. We start by …
New photometrically variable magnetic chemically peculiar stars in the ASAS-3 Archive
S Hümmerich, E Paunzen… - The Astronomical Journal, 2016 - iopscience.iop.org
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 …
changes are observed in the spectra and brightness of these stars, which allow the …
New mercury-manganese stars and candidates from LAMOST DR4
E Paunzen, S Hümmerich, K Bernhard - Astronomy & Astrophysics, 2021 - aanda.org
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 …
(HgMn/CP3) stars using spectra obtained with the Large Sky Area Multi-Object Fiber …
[HTML][HTML] Doppler imaging of chemical spots on magnetic Ap/Bp stars-Numerical tests and assessment of systematic errors
O Kochukhov - Astronomy & Astrophysics, 2017 - aanda.org
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 …
conversion of a line profile time series into a two-dimensional map of the stellar surface …
Discovery of new magnetic early-B stars within the MiMeS HARPSpol survey
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 …
of the magnetic fields in massive stars as well as their impact on stellar internal structure …
Observations of strong magnetic fields in nondegenerate stars
JL Linsky, M Schöller - Space Science Reviews, 2015 - Springer
We review magnetic-field measurements of nondegenerate stars across the Hertzprung–
Russell diagram for main sequence, premain sequence, and postmain sequence stars. For …
Russell diagram for main sequence, premain sequence, and postmain sequence stars. For …