{
  "annotation_id": "5729fd75-67fd-4c0d-9671-50e1ea5aaf5c",
  "date_created": "2026-02-17T05:53:24.338000Z",
  "date_modified": "2026-02-17T05:53:24.338000Z",
  "file_hash": "bcbd7a1f49451272f37425620400964fd0ebcc84ea531ce4e499a13a3d79bbcf",
  "private": false,
  "record": {
    "abstract": "The structure and evolution of close-in exoplanets are shaped by atmospheric loss and migration processes, which give rise to key population features such as the hot Neptune desert, ridge, and savanna - regions of the period-radius space whose boundaries offer critical insights into planetary formation and survival. As part of the KESPRINT collaboration, we selected the TESS transiting planet candidate TOI-3862.01 for radial velocity follow-up to confirm its planetary nature and characterize its mass and bulk properties. This planet candidate is of particular interest due to its position in the middle of the hot Neptune desert, making it a valuable probe for testing theories of planet migration and atmospheric loss. We confirmed the planetary nature and determined the mass of TOI-3862.01 (hereinafter TOI-3862b) by performing a joint fit with both transit and radial velocity data, precisely characterizing the bulk properties of this planet. TOI-3862b is a super-Neptune on a 1.56-day orbit around a Sun-like star with an effective temperature of 5300$\\pm$50K. It has a mass of 53.7$_{-2.9}^{+2.8}$ M$_{\\oplus}$ and a radius of 5.53$\\pm$0.18 R$_{\\oplus}$, corresponding to a density of 1.7$\\pm$0.2 g/cm^3. This places it among the rare population of hot and dense super-Neptune desert planets. TOI-3862b, residing deep in the hot Neptune desert, represents a rare occurrence in an otherwise sparsely populated region, offering a valuable opportunity to probe the processes that may allow planets to survive in such environments.",
    "arxiv_id": "2601.10450",
    "authors": [
      "Ilaria Carleo",
      "Amadeo Castro-Gonz\u00e1lez",
      "Enric Pall\u00e9",
      "Felipe Murgas",
      "Grzegorz Nowak",
      "Gaia Lacedelli",
      "Thomas Masseron",
      "Emily W. Wong",
      "Patrick Eggenberger",
      "Vincent Bourrier",
      "Dawid Jankowski",
      "Krzysztof Go\u017adziewski",
      "Douglas R. Alves",
      "James S. Jenkins",
      "Sergio Messina",
      "Keivan G. Stassun",
      "Jose I. Vines",
      "Matteo Brogi",
      "David R. Ciardi",
      "Catherine A. Clark",
      "William Cochran",
      "Karen A. Collins",
      "Hans J. Deeg",
      "Elise Furlan",
      "Davide Gandolfi",
      "Samuel Gerald\u00eda Gonz\u00e1lez",
      "Artie P. Hatzes",
      "Coel Hellier",
      "Steve B. Howell",
      "Judith Korth",
      "Jorge Lillo-Box",
      "John H. Livingston",
      "Jaume Orell-Miquel",
      "Carina M. Persson",
      "Seth Redfield",
      "Boris Safonov",
      "David Baker",
      "Rafael Delfin Barrena Delgado",
      "Allyson Bieryla",
      "Andrew Boyle",
      "Pau Bosch-Cabot",
      "N\u00faria Casasayas Barris",
      "Stavros Chairetas",
      "Jerome P. de Leon",
      "Izuru Fukuda",
      "Akihiko Fukui",
      "Pere Guerra",
      "Kai Ikuta",
      "Kiyoe Kawauchi",
      "Emil Knudstrup",
      "Florence Libotte",
      "Michael B. Lund",
      "Rafael Luque",
      "Eduardo Lorenzo Mart\u00edn Guerrero de Escalante",
      "Bob Massey",
      "Edward J. Michaels",
      "Giuseppe Morello",
      "Norio Narita",
      "Hannu Parvianien",
      "Richard P. Schwarz",
      "Avi Shporer",
      "Monika Stangret",
      "Noriharu Watanabe",
      "Cristilyn N. Watkins"
    ],
    "categories": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "title": "TOI-3862 b: A dense super-Neptune deep in the hot Neptune desert",
    "url": "https://arxiv.org/abs/2601.10450",
    "version": "v1"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "07cb3ca6-db9c-4c8d-bf46-098553974b3e",
    "id": "arXiv Dataset",
    "type": "Model",
    "variant": "snapshot-2026-01-17",
    "version": "0.1.0"
  },
  "user_id": 1000002
}