LA
L. Arnold
astro-ph.EPastro-ph.SRastro-ph.IMastro-phExoplanetsGiant planets
On Valency
published · living versionsW_z8t33xn2·v1 · currentpublished
The SOPHIE search for northern extrasolar planets. XIV. A temperate ( K) super-earth around the nearby star Gliese 411
with R. F. Díaz, X. Delfosse, M. J. Hobson, I. Boisse +31
1 version
W_hnqry98y·v1published
W_5e9b4du5·v1published
W_9ygaa68x·v1published
Preprints & journals
83 papers in the corpus · 1996–2026SPIRou near-infrared spectropolarimetry of the ultra-hot Jupiter KELT-9b: tentative detection of the planet magnetic field2610.05951v1 · Alexis Lavail, Florian Debras, David Rog'e Royo et al.2026 · 0 citationsarXiv
Radial velocity detection of the TRAPPIST-1 planetary system with SPIRou and NIRPS2609.03006v1 · Alexandrine L'Heureux, Ren'e Doyon, Charles Cadieux et al.2026 · 0 citationsarXiv
Revisiting TOI-4438 and TOI-442 planetary systems with new observations from SPIRou and TESS2607.13333v1 · J. Serrano Bell, G. H'ebrard, E. Martioli et al.2026 · 0 citationsarXiv
Stellar Multiplicity of M Dwarfs with Short-period Giant Planets, and the Characterization of TOI-5628Ab2607.10177v1 · Tianjun Gan, Alexandrine L'Heureux, Charles Cadieux et al.2026 · 0 citationsarXiv
The SPIRou Legacy Survey: Detection of a nearby world orbiting in the habitable zone of Gl725B achieved by correcting strong telluric contamination in near-infrared radial velocities with WAPITI2601.22815v1 · M. Ould-Elhkim, C. Moutou, J.-F. Donati et al.2026 · 2 citationsarXiv
A magnetic field study of two fast-rotating, radio bright M dwarfs. StKM 1-1262 and V374 Peg2511.09312v1 · S. Bellotti, P.I. Cristofari, J.R. Callingham et al.2025 · 1 citationarXiv
Characterizing planetary systems with SPIRou: questions about the magnetic cycle of 55 Cnc A and two new planets around B2510.11523v1 · C. Moutou, P. Petit, P. Charpentier et al.2025 · 0 citationsarXiv
Chromaticity of stellar activity in radial velocities : Anti-correlated families of lines on the M dwarf EV Lac with SPIRou and SOPHIE2509.17911v1 · Pierre Larue, Xavier Delfosse, Andres Carmona et al.2025 · 6 citationsA&A, 701, A216 (2025)
A New Brown Dwarf Orbiting an M star and An Investigation on the Eccentricity Distribution of Transiting Long-Period Brown Dwarfs2507.09461v1 · Tianjun Gan, Charles Cadieux, Shigeru Ida et al.2025 · 5 citationsarXiv
Mass, Gas, and Gauss around a T Tauri Star with SPIRou2505.10564v1 · J.-F. Donati, E. Gaidos, C. Moutou et al.2025 · 7 citationsarXiv
Characterizing planetary systems with SPIRou: Detection of a sub-Neptune in a 6-day period orbit around the M dwarf Gl 4102504.03572v2 · A. Carmona, X. Delfosse, M. Ould-Elhkim et al.2025 · 4 citationsA&A 700, A222 (2025)
A transiting giant planet in orbit around a 0.2-solar-mass host star.40687772 · Bryant, Edward M, Jordán, Andrés, Hartman, Joel D et al.2025 · 11 citationsNature astronomy. 2025;9(7):1031-1044
Measuring Sub-Kelvin Variations in Stellar Temperature with High-Resolution Spectroscopy2409.07260v1 · 'Etienne Artigau, Charles Cadieux, Neil J. Cook et al.2024 · 25 citationsarXiv
TOI-3568 b: a super-Neptune in the sub-Jovian desert2409.03704v1 · E. Martioli, R.P. Petrucci, E. Jofre et al.2024 · 5 citationsA&A 690, A312 (2024)
Characterizing planetary systems with SPIRou: a temperate sub-Neptune exoplanet orbiting the nearby fully-convective star GJ 1289 and a candidate around GJ 33782406.10384v1 · C. Moutou, M. Ould-Elhkim, J.-F. Donati et al.2024 · 4 citationsA&A 688, A196 (2024)
SPIRou spectropolarimetry of the T Tauri star TW Hydrae: magnetic fields, accretion and planets2405.04461v1 · J.-F. Donati, P.I. Cristofari, L.T. Lehmann et al.2024 · 15 citationsarXiv
The classical T Tauri star CI Tau observed with SPIRou: magnetospheric accretion and planetary formation2403.02166v1 · J.-F. Donati, B. Finociety, P.I. Cristofari et al.2024 · 24 citationsarXiv
The SOPHIE search for northern extrasolar planets-XIX. A system including a cold sub-Neptune potentially transiting a V = 6.5 star HD889862311.13513v1 · N. Heidari, I. Boisse, N. C. Hara et al.2023 · 20 citationsA&A 681, A55 (2024)
TOI-4860 b, a short-period giant planet transiting an M3.5 dwarf2308.01454v2 · J.M. Almenara, X. Bonfils, E. M. Bryant et al.2023 · 16 citationsarXiv
Magnetic fields & rotation periods of M dwarfs from SPIRou spectra2307.14190v1 · J.-F. Donati, L.T. Lehmann, P.I. Cristofari et al.2023 · 50 citationsarXiv
Characterizing planetary systems with SPIRou: M-dwarf planet-search survey and the multiplanet systems GJ 876 and GJ 11482307.11569v1 · C. Moutou, X. Delfosse, A.C. Petit et al.2023 · 15 citationsarXiv
A massive hot Jupiter orbiting a metal-rich early-M star discovered in the TESS full frame images2307.07329v2 · Tianjun Gan, Charles Cadieux, Farbod Jahandar et al.2023 · 16 citationsarXiv
Two Warm Neptunes transiting HIP 9618 revealed by TESS & Cheops2306.04450v1 · Hugh P. Osborn, Grzegorz Nowak, Guillaume H'ebrard et al.2023 · 23 citationsMNRAS, Vol. 523, 2023, issue 2, pp 3069-3089
The magnetic field and multiple planets of the young dwarf AU~Mic2304.09642v2 · J.-F. Donati, P.I. Cristofari, B. Finociety et al.2023 · 82 citationsarXiv
Near-IR and optical radial velocities of the active M dwarf star Gl 388 (AD Leo) with SPIRou at CFHT and SOPHIE at OHP: A 2.23 day rotation period and no evidence for a corotating planet2303.16712v4 · A. Carmona, X. Delfosse, S. Bellotti (2 et al.2023 · 36 citationsA&A 674, A110 (2023)
The SPIRou Legacy Survey Rotation period of quiet M dwarfs from circular polarization in near-infrared spectral lines: I. The SPIRou APERO analysis2302.03377v2 · P. Fouqu'e, E. Martioli, J.-F. Donati et al.2023 · 41 citationsA&A 672, A52 (2023)
Optical and near-infrared stellar activity characterization of the early M dwarf Gl~205 with SOPHIE and SPIRou2301.10614v2 · P. Cortes-Zuleta, I. Boisse, B. Klein et al.2023 · 23 citationsA&A 673, A14 (2023)
A sub-Neptune planet around TOI-1695 discovered and characterized with SPIRou and TESS2211.06205v2 · F. Kiefer, G. H'ebrard, E. Martioli et al.2022 · 10 citationsA&A 670, A136 (2023)
APERO: A PipelinE to Reduce Observations -- Demonstration with SPIRou2211.01358v1 · Neil James Cook, 'Etienne Artigau, Ren'e Doyon et al.2022 · 97 citationsarXiv
TOI-1452 b: SPIRou and TESS reveal a super-Earth in a temperate orbit transiting an M4 dwarf2208.06333v1 · Charles Cadieux, Ren'e Doyon, Mykhaylo Plotnykov et al.2022 · 55 citationsAJ, 164, 96 (2022)
TOI-1759 b: a transiting sub-Neptune around a low mass star characterized with SPIRou and TESS2202.01259v1 · Eder Martioli, Guillaume H'ebrard, Pascal Fouqu'e et al.2022 · 37 citationsA&A 660, A86 (2022)
HD207897 b: A dense sub-Neptune transiting a nearby and bright K-type star2110.08597v1 · N. Heidari, I. Boisse, J. Orell-Mique et al.2021 · 17 citationsA&A 658, A176 (2022)
TOI-530b: A giant planet transiting an M dwarf detected by TESS2110.04220v1 · Tianjun Gan, Zitao Lin, Sharon Xuesong Wang et al.2021 · 39 citationsarXiv
Characterizing exoplanetary atmospheres at high resolution with SPIRou: Detection of water on HD 189733 b2108.08390v2 · Anne Boucher, Antoine Darveau-Bernier, Stefan Pelletier et al.2021 · 38 citationsarXiv
The SOPHIE search for northern extrasolar planets. XVIII: Six new cold Jupiters, including one of the most eccentric exoplanet orbits2107.05089v2 · O. D. S. Demangeon, S. Dalal, G. H'ebrard et al.2021 · 12 citationsA&A 653, A78 (2021)
TOI-1278 B: SPIRou unveils a rare Brown Dwarf Companion in Close-In Orbit around an M dwarf2106.04536v1 · 'Etienne Artigau, Guillaume H'ebrard, Charles Cadieux et al.2021 · 40 citationsarXiv
The SOPHIE search for northern extrasolar planets -- XVII. A wealth of new objects: Six cool Jupiters, three brown dwarfs, and 16 low-mass binary stars2105.09741v1 · S. Dalal, F. Kiefer, G. H'ebrard et al.2021 · 19 citationsA&A 651, A11 (2021)
SPIRou: nIR velocimetry & spectropolarimetry at the CFHT2008.08949v1 · J.-F. Donati, D. Kouach, C. Moutou et al.2020 · 176 citationsarXiv
K-Stacker, an algorithm to hack the orbital parameters of planets hidden in high-contrast imaging. First applications to VLT SPHERE multi-epoch observations2004.12878v1 · H. Le Coroller, M. Nowak, P. Delorme et al.2020 · 18 citationsA&A 639, A113 (2020)
The SOPHIE search for northern extrasolar planets. XVI. HD 158259: A compact planetary system in a near-3:2 mean motion resonance chain1911.13296v2 · N. C. Hara, F. Bouchy, M. Stalport et al.2019 · 52 citationsarXiv
The detection and characterisation of 54 massive companions with the SOPHIE spectrograph -- 7 new brown dwarfs and constraints on the BD desert1909.00739v1 · F. Kiefer, G. H'ebrard, J. Sahlmann et al.2019 · 65 citationsA&A 631, A125 (2019)
The SOPHIE search for northern extrasolar planets XV. A Warm Neptune around the M-dwarf Gl3781902.05998v1 · M. J. Hobson, X. Delfosse, N. Astudillo-Defru et al.2019 · 27 citationsA&A 625, A18 (2019)
The SOPHIE search for northern extrasolar planets. XIV. A temperate ( K) super-earth around the nearby star Gliese 4111902.06004v2 · R. F. D'iaz, X. Delfosse, M. J. Hobson et al.2019 · 53 citationsA&A 625, A17 (2019)on Valency
Extrasolar planets and brown dwarfs around AF-type stars. X.The SOPHIE northern sample. Combining the SOPHIE and HARPS surveys to compute the close giant planet mass-period distribution around AF-type stars1809.09914v1 · S. Borgniet, A.-M. Lagrange, N. Meunier et al.2018 · 41 citationsA&A 621, A87 (2019)
The SOPHIE search for northern extrasolar planets XIII. Two planets around M-dwarfs Gl617A and Gl961806.10958v1 · M. J. Hobson, R. F. D'iaz, X. Delfosse et al.2018 · 8 citationsA&A 618, A103 (2018)
K-Stacker: Keplerian image recombination for the direct detection of exoplanets1804.02192v1 · M. Nowak, H. Le Coroller, L. Arnold et al.2018 · 18 citationsA&A 615, A144 (2018)
Spin states of asteroids in the Eos collisional family1707.05507v1 · J. Hanus, M. Delbo', V. Al'i-Lagoa et al.2017 · 40 citationsarXiv
The SOPHIE search for northern extrasolar planets - XII. Three giant planets suitable for astrometric mass determination with Gaia1702.06393v1 · Javiera Rey, Guillaume H'ebrard, Francois Bouchy et al.2017 · 16 citationsA&A 601, A9 (2017)
The SOPHIE search for northern extrasolar planets. XI. Three new companions and an orbit update: Giant planets in the habitable zone1604.07610v1 · R.F. D'iaz, J. Rey, O. Demangeon et al.2016 · 30 citationsA&A 591, A146 (2016)
The SOPHIE search for northern extrasolar planets. X. Detection and characterization of giant planets by the dozen1602.04622v1 · G. Hebrard, L. Arnold, T. Forveille et al.2016 · 35 citationsA&A 588, A145 (2016)
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