DS
D. Ségransan
astro-ph.EPastro-ph.SRastro-ph.IMastro-phastro-ph.GAastro-ph.COastro-ph.HEstat.COcs.SYeess.SY
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Gaia Early Data Release 3: The celestial reference frame (Gaia-CRF3)
with Gaia Collaboration, S. A. Klioner, L. Lindegren, F. Mignard +446
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Preprints & journals
466 papers in the corpus · 1999–2026Companions of Hot Jupiters: two decades of radial velocity monitoring with CORALIE2610.25152v1 · L'ena Parc, Joao P. Faria, Francois Bouchy et al.2026 · 0 citationsarXivon Valency
Astrometric planet search around southern ultracool dwarfs: V. Discovery of the exoplanet candidate PALTA-1 b2610.09965v1 · J. Sahlmann, P. F. Lazorenko, E. L. Mart'in et al.2026 · 0 citationsarXiv
Searching for hot water world candidates with CHEOPS: II. A low-density super-Earth orbiting the K dwarf TOI-22112610.08922v1 · J. A. Egger, P. Cort'es-Zuleta, D. Kubyshkina 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
CHEOPS photometry from 2024 reveals a reversal in the transit-timing variations of AU Mic c2608.01120v1 · Z. Garai, Gy. M. Szab'o, D. Gandolfi 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)
CORALIE radial-velocity search for companions around evolved stars (CASCADES) V. Three planetary companions and achievable precision2606.09072v2 · P. Figueira, E. Fontanet, J. P. Faria et al.2026 · 0 citationsarXiv
New substellar candidates identified through deep learning in the F150 sample of the large-scale SHINE direct imaging survey2605.23700v1 · Carles Cantero Mitjans, Mariam Sabalbal, Olivier Absil et al.2026 · 0 citationsarXiv
An Ultra-Short Period Super-Earth and a Sub-Neptune Orbiting the K dwarf TOI-43112605.12324v1 · Yoshi Nike Emilia Eschen, Thomas G. Wilson, Andrew Collier Cameron 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)
Gas-depleted planet formation occurred in the four-planet system around the red dwarf LHS 1903.41678587 · Wilson, Thomas G, Simpson, Anna M, Collier Cameron, Andrew et al.2026 · 1 citationScience (New York, N.Y.). 2026;392(6795):eadl2348
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)
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)
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
Inferring planet occurrence rates from radial velocities2512.01804v1 · J. P. Faria, J.-B. Delisle, D. S'egransan2025 · 1 citationA&A 704, L19 (2025)
HARPS-N, TESS, and CHEOPS discover a transiting sub-Neptune and two outer companions around the bright solar analogue HD 854262511.08473v1 · F. Lienhard, A. Mortier, A. Collier Cameron et al.2025 · 2 citationsarXiv
A Decade of Solar High-Fidelity Spectroscopy and Precise Radial Velocities from HARPS-N2510.27635v1 · X. Dumusque, K. Al Moulla, M. Cretignier et al.2025 · 3 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)
An Ultra-Short Period Super-Earth and Sub-Neptune Spanning the Radius Valley Orbiting the Kinematic Thick Disk Star TOI-23452510.12783v1 · Yoshi Nike Emilia Eschen, Thomas G. Wilson, Andrea Bonfanti 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
The ExoGRAVITY survey: A K-band spectral library of giant exoplanet and brown dwarf companions2510.08691v3 · J. Kammerer, T. O. Winterhalder, S. Lacour et al.2025 · 6 citationsA&A 704, A318 (2025)
Architecture of planetary systems with and without outer giant planets I. Inner planet detections around HD 23079, HD 196067, and HD 862262509.26232v1 · J.-B. Delisle, J.P. Faria, D. S'egransan 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)
Transit Timing Variations in HIP 41378: CHEOPS and TESS confirm a non-transiting sixth planet in the system2509.14156v3 · P. Leonardi, L. Borsato, L. Pagliaro et al.2025 · 3 citationsA&A 702, A211 (2025)
A four-planet system orbiting the old thick disk star TOI-12032509.10136v1 · D. Gandolfi, A. Alnajjarine, L. M. Serrano et al.2025 · 1 citationarXiv
Improved characterization of the TOI-2141 system: a dense sub-Neptune with non-transiting inner and outer companions2509.00762v1 · R. Luque, K. W. F. Lam, J. Cabrera et al.2025 · 0 citationsA&A 704, A174 (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)
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
The CHEOPS view of HD 95338b: refined transit parameters, and a search for exomoons2507.15318v1 · Sz. K'alm'an, A. E. Simon, A. Deline et al.2025 · 1 citationA&A 701, A240 (2025)
Spectral analysis of two directly imaged benchmark L dwarf companions at the stellar-substellar boundary2507.08654v1 · William Ceva, Elisabeth C. Matthews, Emily L. Rickman et al.2025 · 2 citationsA&A 701, A78 (2025)
A comprehensive study on radial velocity signals using ESPRESSO: Pushing precision to the 10 cm/s level2507.07514v1 · P. Figueira, J. P. Faria, A. M. Silva et al.2025 · 13 citationsarXiv
The KELT-7b atmospheric thermal-inversion conundrum revisited with CHEOPS, TESS, and additional data2506.20432v1 · Z. Garai, A. Krenn, P.E. Cubillos et al.2025 · 2 citationsarXiv
CORALIE radial-velocity search for companions around evolved stars (CASCADES) IV: New planetary systems around HD 87816, HD 94890, and HD 102888 and an update on HD 1210562505.14317v2 · E. Fontanet, S. Udry, D. S'egransan et al.2025 · 0 citationsarXiv
Dark skies of the slightly eccentric WASP-18 b from its optical-to-infrared dayside emission2505.01544v2 · A. Deline, P. E. Cubillos, L. Carone et al.2025 · 9 citationsA&A 699, A150 (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)
VLTI/GRAVITY upper limit on near-infrared emission from the nearby 33 Msun black hole Gaia BH32502.19473v1 · Pierre Kervella, Pasquale Panuzzo, Alexandre Gallenne et al.2025 · 4 citationsarXiv
Searching for Hot Water World Candidates with CHEOPS: Refining the radii and analysing the internal structures and atmospheric lifetimes of TOI-238 b and TOI-1685 b2502.07887v1 · J. A. Egger, D. Kubyshkina, Y. Alibert et al.2025 · 6 citationsA&A 696, A28 (2025)
Radial velocity homogeneous analysis of M dwarfs observed with HARPS I. Exoplanet detection and candidates2502.06513v1 · L. Mignon X. Delfosse, X. Bonfils, N. Meunier et al.2025 · 12 citationsAstronomy & Astrophysics, Volume 689, id.A32, 33 pp. Septembre 2024
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)
Revisiting the multi-planetary system of the nearby star HD 20794: Confirmation of a low-mass planet in the habitable zone of a nearby G-dwarf2501.17092v1 · N. Nari, X. Dumusque, N. C. Hara et al.2025 · 12 citationsA&A; Volume 693; A297; 2025
Transit-timing variations in the AU Mic system observed with CHEOPS2501.13575v1 · 'A. Boldog, Gy. M. Szab'o, L. Kriskovics et al.2025 · 6 citationsarXiv
CHEOPS observations confirm nodal precession in the WASP-33 system2412.08557v1 · A. M. S. Smith, Sz. Csizmadia, V. Van Grootel et al.2024 · 2 citationsA&A 2025 693 A128
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