AO
Ares Osborn
astro-ph.EPastro-ph.SRastro-ph.IM
On Valency
published · living versionsW_v2snk925·v1 · currentpublished
A remnant planetary core in the hot-Neptune desert
with David J. Armstrong, Théo A. Lopez, Vardan Adibekyan, Richard A. Booth +89
1 version
Preprints & journals
54 papers in the corpus · 2019–2026Demographics of Close-In TESS Exoplanets Orbiting FGK Main-sequence Stars II. Spectral-Type Dependence and the Neptunian Landscape2610.31784v1 · Kaiming Cui, David J. Armstrong, Andreas Hadjigeorghiou 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
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)
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)
Automatic search for transiting planets in TESS-SPOC FFIs with RAVEN: over 100 newly validated planets and over 2000 vetted candidates2603.22597v2 · M. Lafarga, D. J. Armstrong, K. Cui et al.2026 · 3 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)
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
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)
NGTS-11 c: a transiting Neptune-mass planet interior to the warm Saturn NGTS-11 b2510.14083v1 · David R. Anderson, Jose I. Vines, Katharine Hesse 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
ATREIDES I. Embarking on a trek across the exo-Neptunian landscape with the TOI-421 system2509.15746v1 · V. Bourrier, M. Steiner, A. Castro-Gonz'alez et al.2025 · 9 citationsA&A, 701, A190 (2025)
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
Exploring the Neptunian Desert: Insights from a Homogeneous Planetary Sample2504.16164v1 · Lauren Doyle, David J. Armstrong, Lorena Acuna et al.2025 · 15 citationsarXiv
The NCORES Program: Precise planetary masses, null results, and insight into the planet mass distribution near the radius gap2501.14355v2 · David J. Armstrong, Ares Osborn, Remo Burn et al.2025 · 0 citationsarXiv
Radii, masses, and transit-timing variations of the three-planet system orbiting the naked-eye star TOI-3962411.14911v2 · A. Bonfanti, I. Amateis, D. Gandolfi et al.2024 · 7 citationsA&A 693, A90 (2025)
NGTS-33b: A Young Super-Jupiter Hosted by a Fast Rotating Massive Hot Star2411.08960v1 · Douglas R. Alves, James S. Jenkins, Jose I. Vines et al.2024 · 5 citationsarXiv
TOI-2490b- The most eccentric brown dwarf transiting in the brown dwarf desert2408.04475v1 · Beth A. Henderson, Sarah L. Casewell, Andr'es Jord'an et al.2024 · 15 citationsarXiv
Surviving in the Hot Neptune Desert: The Discovery of the Ultra-Hot Neptune TOI-3261b2407.04225v1 · Emma Nabbie, Chelsea X. Huang, Jennifer A. Burt et al.2024 · 16 citationsarXiv
Discovery of a cold giant planet and mass measurement of a hot super-Earth in the multi-planetary system WASP-1322406.15986v2 · N. Grieves, F. Bouchy, D. J. Armstrong et al.2024 · 7 citationsA&A 693, A144 (2025)
TOI-2374 b and TOI-3071 b: two metal-rich sub-Saturns well within the Neptunian desert2406.12996v1 · Alejandro Hacker, Rodrigo F. D'iaz, David J. Armstrong et al.2024 · 12 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
Photo-dynamical characterisation of the TOI-178 resonant chain2405.13732v1 · A. Leleu, J.-B. Delisle, L. Delrez et al.2024 · 10 citationsA&A 688, A211 (2024)
TOI-2447 b / NGTS-29 b: a 69-day Saturn around a Solar analogue2405.07367v1 · Samuel Gill, Daniel Bayliss, Solene Ulmer-Moll et al.2024 · 3 citationsarXiv
Planet Hunters NGTS: New Planet Candidates from a Citizen Science Search of the Next Generation Transit Survey Public Data2404.15395v1 · Sean M. O'Brien, Megan E. Schwamb, Samuel Gill et al.2024 · 3 citationsAJ 167 (2024) 238
The XUV-driven escape of the planets around TOI-431 & Lupi2404.10673v1 · George W. King, L'ia R. Corrales, Jorge Fern'andez Fern'andez et al.2024 · 1 citationarXiv
NGTS-30 b/TOI-4862 b: An 1 Gyr old 98-day transiting warm Jupiter2404.02974v1 · M.P. Battley, K.A. Collins, S. Ulmer-Moll et al.2024 · 1 citationarXiv
TESS and ESPRESSO discover a super-Earth and a mini-Neptune orbiting the K-dwarf TOI-2382402.04113v1 · A. Su'arez Mascareno, V. M. Passegger, J. I. Gonz'alez Hern'andez et al.2024 · 16 citationsarXiv
TESS Duotransit Candidates from the Southern Ecliptic Hemisphere2310.17268v2 · Faith Hawthorn, Sam Gill, Daniel Bayliss et al.2023 · 6 citationsarXiv
TOI-332 b: a super dense Neptune found deep within the Neptunian desert2308.12137v1 · Ares Osborn, David J. Armstrong, Jorge Fern'andez Fern'andez et al.2023 · 25 citationsarXiv
Discovery and characterisation of two Neptune-mass planets orbiting HD 212729 with TESS2307.11566v1 · David J. Armstrong, Ares Osborn, Vardan Adibekyan et al.2023 · 6 citationsarXiv
TOI-908: a planet at the edge of the Neptune desert transiting a G-type star2306.09758v1 · Faith Hawthorn, Daniel Bayliss, David J. Armstrong et al.2023 · 8 citationsarXiv
TOI-2498 b: A hot bloated super-Neptune within the Neptune desert2305.06950v1 · Ginger Frame, David J. Armstrong, Heather M. Cegla et al.2023 · 5 citationsarXiv
Three Saturn-mass planets transiting F-type stars revealed with TESS and HARPS2303.15080v2 · Angelica Psaridi, Francois Bouchy, Monika Lendl et al.2023 · 10 citationsA&A 675, A39 (2023)
The young mini-Neptune HD 207496b that is either a naked core or on the verge of becoming one2303.03775v1 · S. C. C. Barros, O. D. S. Demangeon, D.J. Armstrong et al.2023 · 18 citationsarXiv
TESS Hunt for Young and Maturing Exoplanets (THYME) IX: a 27 Myr extended population of Lower-Centaurus Crux with a transiting two-planet system2212.03266v1 · Mackenna L. Wood, Andrew W. Mann, Madyson G. Barber et al.2022 · 37 citationsarXiv
The discovery of three hot Jupiters, NGTS-23b, 24b and 25b, and updated parameters for HATS-54b from the Next Generation Transit Survey2211.01044v1 · David G. Jackson, Christopher A. Watson, Ernst J. W. de Mooij et al.2022 · 8 citationsarXiv
TOI-969: a late-K dwarf with a hot mini-Neptune in the desert and an eccentric cold Jupiter2210.08996v1 · J. Lillo-Box, D. Gandolfi, D. J. Armstrong et al.2022 · 20 citationsA&A 669, A109 (2023)
NGTS-21b: An Inflated Super-Jupiter Orbiting a Metal-poor K dwarf2210.01027v2 · Douglas R. Alves, James S. Jenkins, Jose I. Vines et al.2022 · 6 citationsarXiv
TESS spots a mini-neptune interior to a hot saturn in the TOI-2000 system2209.14396v3 · Lizhou Sha, Andrew M. Vanderburg, Chelsea X. Huang et al.2022 · 29 citationsarXiv
TOI-836: A super-Earth and mini-Neptune transiting a nearby K-dwarf2208.07328v1 · Faith Hawthorn, Daniel Bayliss, Thomas G. Wilson et al.2022 · 28 citationsarXiv
A close-in puffy Neptune with hidden friends: The enigma of TOI 6202204.03108v1 · Michael A. Reefe, Rafael Luque, Eric Gaidos et al.2022 · 11 citationsAJ, 163(6), 269 (2022)
The HD 137496 system: A dense, hot super-Mercury and a cold Jupiter2111.08764v1 · T. Azevedo Silva, O. D. S. Demangeon, S. C. C. Barros et al.2021 · 26 citationsA&A 657, A68 (2022)
The young HD 73583 (TOI-560) planetary system: Two 10-M mini-Neptunes transiting a 500-Myr-old, bright, and active K dwarf2110.13069v2 · O. Barrag'an, D. J. Armstrong, D. Gandolfi et al.2021 · 50 citationsarXiv
TOI-220 : a warm sub-Neptune discovered by TESS2105.01944v1 · S. Hoyer, D. Gandolfi, D.J. Armstrong et al.2021 · 16 citationsarXiv
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