OK
O. Kochukhov
astro-ph.SRastro-phastro-ph.EPastro-ph.IMastro-ph.GAastro-ph.HEhep-phcs.CV
On Valency
published · living versionsW_yjca5qhy·v1 · currentpublished
A comprehensive reanalysis of HD 99458. Not a magnetic Ap star but an oscillating Algol with ongoing mass transfer
with E. Semenko, Z. Mikulášek, D. Mkrtichian, P. Walczak +19
1 version
W_4mnp3228·v1published
W_8epvx92t·v1published
W_5ccjqvfx·v1published
W_thtaqzcc·v1published
Preprints & journals
250 papers in the corpus · 2002–2026A comprehensive reanalysis of HD 99458. Not a magnetic Ap star but an oscillating Algol with ongoing mass transfer2610.32406v1 · E. Semenko, Z. Mikul'asek, D. Mkrtichian et al.2026 · 0 citationsarXivon Valency
FastSpec: Fast and versatile stellar spectrum synthesis code2610.31763v1 · Oleg Kochukhov2026 · 0 citationsarXivon Valency
Unlocking new information in stellar circular polarisation with second-order least-squares deconvolution2610.07148v1 · Oleg Kochukhov2026 · 0 citationsarXiv
Exploring the ultrahot Neptune LTT 9779 b with CRIRES+. Non-detection of helium transmission spectra and detection of HO on the dayside2610.07202v1 · S. Liu, F. Yan, L. Nortmann et al.2026 · 0 citationsarXiv
Early Exploration of the Scientific Discovery Space for the Habitable Worlds Observatory2608.11294v1 · Courtney D. Dressing, Danica Adams, Evelyne Alecian et al.2026 · 0 citationsarXiv
Stellar masses and ages in Gaia Data Release 4 from the Final Luminosity Age Mass Estimator algorithm2607.00264v1 · Orlagh L. Creevey, Laia Casamiquela, Yveline Lebreton et al.2026 · 0 citationsarXiv
Minimising magnetic activity effects in PLATO observations: insights from the Sun-as-a-star2606.16450v1 · J'erome B'etrisey, Anne-Marie Broomhall, Sylvain N. Breton et al.2026 · 0 citationsarXiv
51 Peg b revisited with VLT/CRIRES+. Constraints on atmospheric thermal structure, chemical composition, and an alternative orbital solution2605.23582v1 · D. Cont, L. Nortmann, F. Lesjak et al.2026 · 0 citationsarXiv
Testing the reliability of magnetic field strength measurements for M dwarfs2605.18151v1 · I. Amateis, O. Kochukhov, A. Hahlin2026 · 0 citationsarXiv
Cloudy with a chance of metals: Indications of CO in the atmosphere of GJ 1214 b from high-resolution K-band spectroscopy2604.15292v1 · L. Nortmann, D. Cont, F. Lesjak et al.2026 · 0 citationsarXiv
The PLATO Science Calibration and Validation Plan: Targets for the First Long-pointing Field2604.04042v1 · Konstanze Zwintz, Conny Aerts, Andrew Tkachenko et al.2026 · 0 citationsarXiv
Magnetic field measurements in a sample of Class I and flat-spectrum protostars observed with SPIRou2603.17482v2 · L. Drouglazet, E. Alecian, A. Sousa et al.2026 · 2 citationsA&A 708, A371 (2026)
Spectropolarimetric Constraints on the Maunder Minimum Analog HD 166620: Evidence for Weakened Magnetic Braking2603.18139v1 · Federica Chiti, Jennifer L. van Saders, Oleg Kochukhov et al.2026 · 0 citationsarXiv
Anti-Solar Differential Rotation May Have Revived Magnetic Braking in the Subgiant 31 Aquilae2603.17001v1 · Travis S. Metcalfe, Jennifer L. van Saders, Thomas R. Ayres et al.2026 · 0 citationsAstron. J. 171, 287 (2026)
How to interpret near-infrared polarisation spectra of active M dwarfs?2601.19363v1 · Oleg Kochukhov2026 · 0 citationsarXiv
Zeeman Doppler Imaging of Ceti: The Weakest Magnetic Field Detected in a Sun-like Star2509.12310v1 · Federica Chiti, Oleg Kochukhov, Jennifer L. van Saders et al.2025 · 0 citations2025, ApJL, 991, L13
Weakened Magnetic Braking Signals the Collapse of the Global Stellar Dynamo2509.03717v1 · Travis S. Metcalfe, Jennifer L. van Saders, Marc H. Pinsonneault et al.2025 · 8 citationsAstrophys. J. 991, L17 (2025)
Chemical abundances and doppler imaging of the Ap Si/He-wk star HD 1003572508.20682v1 · Athul Dileep, Santosh Joshi, Sofya Alexeeva et al.2025 · 2 citationsMNRAS, Volume 542, Issue 2, September 2025, Pages 747
VLT/CRIRES+ observations of warm Neptune WASP-107 b: Challenges in detecting molecules with ground-based transmission spectroscopy of cooler and cloudy exoplanets2508.18964v2 · Linn Boldt-Christmas, Adam D. Rains, Nikolai Piskunov et al.2025 · 1 citationarXiv
Frequency separation ratios do not suppress magnetic activity effects in solar-like stars2507.02597v1 · J'erome B'etrisey, Anne-Marie Broomhall, Sylvain N. Breton et al.2025 · 3 citationsA&A 699, L9 (2025)
Magnetic braking and dynamo evolution of Hydri2506.17049v1 · A. R. G. Santos, T. S. Metcalfe, O. Kochukhov et al.2025 · 3 citations2025, A&A, 698, L23
Coupling 1D stellar evolution with 3D-hydrodynamical simulations on-the-fly III: stellar evolution at different metallicities2506.05094v1 · Yixiao Zhou, Jakob L. R\orsted, Achim Weiss et al.2025 · 5 citationsarXiv
viper: High-precision radial velocities from the optical to the infrared (Reaching 3 m/s in the K band of CRIRES+ with telluric modelling)2505.08315v1 · J. Kohler, M. Zechmeister, A. Hatzes et al.2025 · 7 citationsA&A, 698, A44 (2025)
Abundance analysis of benchmark M dwarfs2505.07116v1 · T. Olander, U. Heiter, N. Piskunov et al.2025 · 3 citationsA&A 698, A289 (2025)
Probabilistic Zeeman-Doppler imaging of stellar magnetic fields: I. Analysis of tau Scorpii in the weak-field limit2505.04437v1 · Jennifer Rosina Andersson, Oleg Kochukhov, Zheng Zhao et al.2025 · 0 citationsA&A 699, A63 (2025)
Retrieving day- and nightside atmospheric properties of the ultra-hot Jupiter TOI-2109b. Detection of Fe and CO emission lines and evidence for inefficient heat transport2504.15757v1 · D. Cont, L. Nortmann, F. Lesjak et al.2025 · 10 citationsarXiv
Influence of the magnetic activity cycle on mean density and acoustic radius inversions2504.11283v1 · J'erome B'etrisey, Daniel R. Reese, Sylvain N. Breton et al.2025 · 5 citationsA&A 697, A219 (2025)
Extremely asymmetric bipolar magnetic field of the Bp star HD 573722504.06098v1 · Oleg Kochukhov2025 · 3 citationsA&A 696, L17 (2025)
Comparative study of small-scale magnetic fields on Boo A using optical and near-infrared spectroscopy2503.04519v1 · A. Hahlin, O. Kochukhov, P. Chaturvedi et al.2025 · 1 citationarXiv
Performance of the Stellar Abundances and atmospheric Parameters Pipeline adapted for M dwarfs I. Atmospheric parameters from the spectroscopic module2502.09388v1 · Terese Olander, Matthew R. Gent, Ulrike Heiter et al.2025 · 5 citationsA&A 696, A62 (2025)
Testing the Rossby Paradigm: Weakened Magnetic Braking in early K-type Stars2501.19169v3 · Travis S. Metcalfe, Pascal Petit, Jennifer L. van Saders et al.2025 · 7 citationsAstrophys. J. 986, 120 (2025)
Multi-Observatory Study of Young Stellar Energetic Flares (MORYSEF): No Evidence For Abnormally Strong Stellar Magnetic Fields After Powerful X-ray Flares2501.01321v1 · Konstantin V. Getman, Oleg Kochukhov, Joe P. Ninan et al.2025 · 2 citationsarXiv
HD 34736: An intensely magnetised double-lined spectroscopic binary with rapidly-rotating chemically peculiar B-type components2411.05376v1 · E. Semenko, O. Kochukhov, Z. Mikul'asek et al.2024 · 3 citationsarXiv
Multi-Observatory Research of Young Stellar Energetic Flares (MORYSEF): X-ray Flare Related Phenomena and Multi-epoch Behavior2410.05126v1 · Konstantin V. Getman, Eric D. Feigelson, Abygail R. Waggoner et al.2024 · 4 citationsarXiv
Magnetic Fields in a sample of planet-hosting M dwarf stars from Kepler, K2, and TESS observed by APOGEE2409.06637v1 · F'abio Wanderley, Katia Cunha, Verne Smith et al.2024 · 4 citationsarXiv
Imprint of the magnetic activity cycle on solar asteroseismic characterisation based on 26 years of GOLF and BiSON data2407.15655v1 · J'erome B'etrisey, Martin Farnir, Sylvain N. Breton et al.2024 · 11 citationsA&A 688, L17 (2024)
Magnetic Fields of M Dwarfs from the Pleiades Open Cluster2406.13757v1 · Fabio Wanderley, Katia Cunha, Oleg Kochukhov et al.2024 · 13 citationsarXiv
Exploring the ultra-hot Jupiter WASP-178b. Constraints on atmospheric chemistry and dynamics from a joint retrieval of VLT/CRIRES and space photometric data2406.08166v3 · D. Cont, L. Nortmann, F. Yan et al.2024 · 1 citationarXiv
The PLATO Mission2406.05447v2 · Heike Rauer, Conny Aerts, Juan Cabrera et al.2024 · 13 citationsarXiv
A conclusive non-detection of magnetic field in the Am star o Peg with high-precision near-infrared spectroscopy2405.12778v1 · O. Kochukhov, A. M. Amarsi, A. Lavail et al.2024 · 5 citationsA&A 689, A36 (2024)
Statistical relations between spectropolarimetric observables and the polar strength of the stellar dipolar magnetic field2404.17517v1 · O. Kochukhov2024 · 5 citationsarXiv
CRIRES transmission spectroscopy of WASP-127b. Detection of the resolved signatures of a supersonic equatorial jet and cool poles in a hot planet2404.12363v2 · L. Nortmann, F. Lesjak, F. Yan et al.2024 · 35 citationsA&A 693, A213 (2025)
Using ZDI maps to determine magnetic forces and torques at the photospheres of Early-type stars2404.10161v1 · James MacDonald, Tali Natan, V'eronique Petit et al.2024 · 1 citationarXiv
Accretion and magnetism on young eccentric binaries: DQ Tau and AK Sco2402.01419v1 · Kim Pouilly, Axel Hahlin, Oleg Kochukhov et al.2024 · 7 citationsarXiv
Multi-scale magnetic field investigation of the M-dwarf eclipsing binary CU Cancri2402.00721v1 · A. Hahlin, O. Kochukhov, A.D. Rains et al.2024 · 6 citationsarXiv
Weakened Magnetic Braking in the Exoplanet Host Star 51 Peg2401.01944v1 · Travis S. Metcalfe, Klaus G. Strassmeier, Ilya V. Ilyin et al.2024 · 21 citationsAstrophys. J. 960, L6 (2024)
Optimising spectroscopic observations of transiting exoplanets2312.08320v1 · Linn Boldt-Christmas, Fabio Lesjak, Ansgar Wehrhahn et al.2023 · 20 citationsarXiv
Surface distribution of small-scale magnetic field on the active cool star LQ Hydrae2312.04136v1 · O. Kochukhov, T. Hackman, J.J. Lehtinen2023 · 6 citationsarXiv
TESS Cycle 2 observations of roAp stars with 2-min cadence data2312.04199v1 · D. L. Holdsworth, M. S. Cunha, M. Lares-Martiz et al.2023 · 20 citationsarXiv
The large-scale magnetic field of the M dwarf double-line spectroscopic binary FK Aqr2312.04247v1 · S. Tsvetkova, J. Morin, C.P. Folsom et al.2023 · 5 citationsarXiv
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