XD
X. Delfosse
astro-ph.EPastro-ph.SRastro-phastro-ph.IMastro-ph.GAAstrobiologyastro-ph.COExobiologyExtraterrestrial environmentsExtreme temperatures
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, M. J. Hobson, I. Boisse, N. Astudillo-Defru +31
1 version
W_hv2bpc4c·v1published
W_hnqry98y·v1published
W_2536fkee·v1published
W_ex4mptu4·v1published
Preprints & journals
279 papers in the corpus · 1997–2026SOPHIE and TESS characterization of fourteen TESS Objects of Interest: nine planetary systems and five low-mass stellar companions2610.08584v1 · N. Heidari, G. H'ebrard, S. Sousa et al.2026 · 0 citationsarXiv
SPIRou 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
A temperate sub-Neptune transiting the M4 Dwarf TOI-210 identified by NIRPS and TESS -- Uncovering hidden M-dwarf planetary systems in the near-infrared2609.35747v1 · C. Cadieux, B. N. Skinner, F. Bouchy et al.2026 · 0 citationsarXiv
Upside down: GJ3090 b the first retrograde exoplanet around an M dwarf detected with NIRPS2609.24870v1 · Y. Carteret, V. Bourrier, L. Parc et al.2026 · 0 citationsA&A, Volume 713, September 2026, L15
Night-sky emission correction techniques for high-resolution spectroscopy: Demonstration with NIRPS2609.03374v1 · Avidaan Srivastava, Francois Bouchy, Xavier Dumusque 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
The breaking of cold traps and onset of titanium in ultra-hot Jupiter atmospheres: WASP-189b in context2606.15934v1 · Stefan Pelletier, Romain Allart, Valentina Vaulato et al.2026 · 0 citationsA&A, 711, A119 (2026)
Towards Doppler eclipse mapping of hot Jupiters. An observational perspective on WASP-33 b with SPIRou2605.22931v1 · Vincent Yariv, Xavier Bonfils, Nicolas Cowan et al.2026 · 0 citationsarXiv
The multi-planet system TOI-5624: Four transiting sub-Neptunes with an outer companion revealed by transit-timing variations2604.15035v2 · A. Bonfanti, D. Gandolfi, P. Leonardi et al.2026 · 1 citationA&A 709, A265 (2026)
Magnetic geometry of M dwarfs in the southern PLATO field2604.06821v2 · M. Diez, P. I. Cristofari, J. Morin et al.2026 · 0 citationsA&A 709, A273 (2026)
Super-Earth masses and stellar abundances from NIRPS reveal tentative evidence for water-rich formation around M dwarfs2604.07447v1 · Drew Weisserman, Nicole Gromek, Ryan Cloutier et al.2026 · 4 citationsA&A 709, A165 (2026)
Weighing the mass of LHS 3844 b2603.28237v2 · Alejandro Hacker, Nicola Astudillo-Defru, Rodrigo F. D'iaz et al.2026 · 0 citationsarXiv
TOI-4552 b: A new ultra-short period rocky world revealed by NIRPS and TESS2603.18233v1 · Avidaan Srivastava, Ren'e Doyon, Francois Bouchy et al.2026 · 1 citationA&A 709, A73 (2026)
Confirmation of the hot super-Neptune TOI-672 b with NIRPS and HARPS and Insights into the Neptunian desert around M dwarfs2603.12345v1 · Ares Osborn, Ryan Cloutier, Vincent Bourrier et al.2026 · 1 citationA&A 709, A23 (2026)
Long-term activity cycles in planetary M stars observed with SOPHIE2603.03643v1 · C. G. Oviedo, A. P. Buccino, R.F. D'iaz 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
Densities of small planets around the M dwarfs TOI-4336 A and TOI-4342 with ESPRESSO: Three sub-Neptunes, one super-Earth, and a Neptune-mass candidate2601.22115v2 · L'ena Parc, Charles Cadieux, Nolan Grieves et al.2026 · 1 citationarXiv
NIRPS tightens the mass estimate of GJ 3090 b and detects a planet near the stellar rotation period2601.09330v2 · Pierrot Lamontagne, Drew Weisserman, Charles Cadieux et al.2026 · 1 citationA&A, 706 (2026) A278
Searching for close-in planets around TWA 7 with SPIRou2511.16609v1 · J.-F. Donati, P.I. Cristofari, C. Moutou et al.2025 · 0 citationsarXiv
NIRPS and TESS reveal a peculiar system around the M dwarf TOI-756: A transiting sub-Neptune and a cold eccentric giant2510.14927v1 · L'ena Parc, Francois Bouchy, Neil J. Cook et al.2025 · 5 citationsA&A, 702, A138 (2025)
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
TOI-3288 b and TOI-4666 b: two gas giants transiting low-mass stars characterised by NIRPS2510.11703v2 · Yolanda G. C. Frensch, Francois Bouchy, Gaspare Lo Curto et al.2025 · 5 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)
Atmospheric composition and circulation of the ultra-hot Jupiter WASP-121b with joint NIRPS, HARPS and CRIRES+ transit spectroscopy2509.00151v1 · Valentina Vaulato, Melissa J. Hobson, Romain Allart et al.2025 · 3 citationsarXiv
Quantifying thermal water dissociation in the dayside photosphere of WASP-121 b using NIRPS2508.06626v1 · Luc Bazinet, Romain Allart, Bjorn Benneke et al.2025 · 4 citationsA&A 701, A276 (2025)
Rotational modulation and long-term evolution of the small-scale magnetic fields of M dwarfs observed with SPIRou2508.04569v1 · P. I. Cristofari, J.-F. Donati, S. Bellotti et al.2025 · 8 citationsarXiv
Diving into the planetary system of Proxima with NIRPS -- Breaking the metre per second barrier in the infrared2507.21751v1 · Alejandro Su'arez Mascareno, 'Etienne Artigau, Lucile Mignon et al.2025 · 12 citations2025, A&A, 700, A11
NIRPS joining HARPS at ESO 3.6 m. On-sky performance and science objectives2507.21767v1 · Francois Bouchy, Rene Doyon, Francesco Pepe et al.2025 · 30 citationsA&A, 700, A10 (2025)
Hydride ion continuum hides absorption signatures in the NIRPS near-infrared transmission spectrum of the ultra-hot gas giant WASP-189b2507.21229v1 · Valentina Vaulato, Stefan Pelletier, David Ehrenreich et al.2025 · 9 citationsarXiv
Blind search for activity-sensitive lines in the near-infrared using HARPS and NIRPS observations of Proxima and Gl 5812507.21262v1 · Joao Gomes da Silva, Elisa Delgado-Mena, Nuno C. Santos et al.2025 · 4 citationsarXiv
NIRPS detection of delayed atmospheric escape from the warm and misaligned Saturn-mass exoplanet WASP-69b2507.21284v1 · Romain Allart, Yann Carteret, Vincent Bourrier et al.2025 · 7 citationsarXiv
A systematic bias in template-based RV extraction algorithms2506.23261v1 · Andr'e M. Silva, N. C. Santos, J. P. Faria et al.2025 · 9 citationsA&A 700, A93 (2025)
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)
Radial velocity homogeneous analysis of M dwarfs observed with HARPS. II. Detection limits and planetary occurrence statistics2502.06553v1 · L. Mignon, X. Delfosse, N. Meunier et al.2025 · 26 citationsA&A 700, A146 (2025)
The SPIRou Legacy Survey: near-infrared and optical radial velocity analysis of Gl 480 and Gl 382 using SPIRou, HARPS and CARMENES spectrographs2502.07086v2 · M. Ould-Elhkim, C. Moutou, J-F. Donati et al.2025 · 2 citationsA&A 696, A152 (2025)
Characterization of seven transiting systems including four warm Jupiters from SOPHIE and TESS2412.08527v1 · N. Heidari, G. H'ebrard, E. Martioli et al.2024 · 12 citationsA&A 694, A36 (2025)
Gl 725A b: a potential super-Earth detected with SOPHIE and SPIRou in an M dwarf binary system at 3.5 pc2411.09506v1 · P. Cortes-Zuleta, I. Boisse, M. Ould-Elhkim et al.2024 · 5 citationsA&A 693, A164 (2025)
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)
TOI-1408: Discovery and Photodynamical Modeling of a Small Inner Companion to a Hot Jupiter Revealed by TTVs2407.17798v1 · Judith Korth, Priyanka Chaturvedi, Hannu Parviainen et al.2024 · 25 citationsarXiv
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)
Probing atmospheric escape through metastable He I triplet lines in 15 exoplanets observed with SPIRou2406.09225v1 · A. Masson, S. Vinatier, B. B'ezard et al.2024 · 22 citationsarXiv
NIRPS first light and early science: breaking the 1 m/s RV precision barrier at infrared wavelengths2406.08304v2 · 'Etienne Artigau, Francois Bouchy, Ren'e Doyon et al.2024 · 0 citationsarXiv
BEBOP V. Homogeneous Stellar Analysis of Potential Circumbinary Planet Hosts2406.03094v2 · Alix V. Freckelton, Daniel Sebastian, Annelies Mortier et al.2024 · 10 citationsarXiv
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
Planet Hunters TESS V: a planetary system around a binary star, including a mini-Neptune in the habitable zone2404.18997v1 · Nora L. Eisner, Samuel K. Grunblatt, Oscar Barrag'an et al.2024 · 6 citationsPublished in AJ, 2024
Long-term monitoring of large-scale magnetic fields across optical and near-infrared domains with ESPaDOnS, Narval and SPIRou. The cases of EV Lac, DS Leo, and CN Leo2403.08590v1 · S. Bellotti, J. Morin, L. T. Lehmann et al.2024 · 0 citationsarXiv
Long period modulation of the classical T Tauri star CI Tau: evidence for an eccentric close-in massive planet at 0.17 au2403.03706v1 · R. Manick, A. P. Sousa, J. Bouvier et al.2024 · 10 citationsA&A 686, A249 (2024)
Characterisation of the stellar activity of M dwarfs. II. Relationship between Ca, H, and Na chromospheric emissions2403.01790v1 · Nadege Meunier, Lucile Mignon, Matthieu Kretzschmar et al.2024 · 0 citationsarXiv
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