activity
20032025
most citedGaia Data Release 3: Astrophysical parameters inference system (Apsis) I -- methods and content overview

223 citations · 3.1k across the 83 of their papers we have counts for

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astro-ph.SR2025

Comparative study of small-scale magnetic fields on Boo A using optical and near-infrared spectroscopy

A. Hahlin, O. Kochukhov, P. Chaturvedi +12

Magnetic field investigations of Sun-like stars, using Zeeman splitting of non-polarised spectra, in the optical and H-band have found significantly different magnetic field streng…

astro-ph.SR2024★ 3 cited

HD 34736: An intensely magnetised double-lined spectroscopic binary with rapidly-rotating chemically peculiar B-type components

E. Semenko, O. Kochukhov, Z. Mikulášek +21

We report the results of a comprehensive study of the spectroscopic binary (SB2) system HD 34736 hosting two chemically peculiar (CP) late B-type stars. Using new and archival obse…

astro-ph.SR2024★ 5 cited

A conclusive non-detection of magnetic field in the Am star o Peg with high-precision near-infrared spectroscopy

O. Kochukhov, A. M. Amarsi, A. Lavail +10

The A-type metallic-line (Am) stars are typically considered to be non-magnetic or possessing very weak sub-G magnetic fields. This view has been repeatedly challenged in the liter…

astro-ph.SR2023★ 18 cited

Determination of small-scale magnetic fields on Sun-like stars in the near-infrared using CRIRES

A. Hahlin, O. Kochukhov, A. D. Rains +18

We aim to characterise the small-scale magnetic fields for a sample of 16 Sun-like stars and investigate the capabilities of the newly upgraded near-infrared (NIR) instrument CRIRE…

astro-ph.SR2022★ 177 cited

Magnetism, rotation, and nonthermal emission in cool stars -- Average magnetic field measurements in 292 M dwarfs

A. Reiners, D. Shulyak, P. J. Käpylä +16

Stellar dynamos generate magnetic fields that are of fundamental importance to the variability and evolution of Sun-like and low-mass stars, and for the development of their planet…

astro-ph.SR2021★ 7 cited

Fundamental parameters of the Ap-stars GO And, 84 UMa, and Psc

A. Romanovskaya, D. Shulyak, T. Ryabchikova +1

The aim of this work is to determine fundamental parameters of three Ap stars, GO And (HD 4778), Psc (HD 220825), and 84 UMa (HD 120198), using spectroscopic techniques. By ana…