{
  "abstract": "We present the discovery of RX J0534.0-0221 b, a giant planet orbiting an M dwarf star in the β Pictoris moving group. RX J0534 was originally observed with JWST/NIRCam in the F444W and F200W filters. Observations in F444W reveal a point source at signal-to-noise ratio ∼17.5 at ∼ 0 . ″ 41 (∼14 au) from the host star, with no detection of the source in F200W. A follow-up observation with LBTI/LMIRCam in the L ′ band redetects the source 16 months after the JWST epoch, providing evidence for common proper motion over a chance alignment with a background interloper at the 6 σ –7 σ level. Atmospheric grid model fits to the available photometry yield the bolometric luminosity log 10 ( L / L ⊙ ) = − 5.4 8 − 0.19 + 0.10 dex. At an age of 18–26 Myr, hot-start evolutionary models predict M = 2 . 8 − 0.5 + 0.5 M Jup and T eff = 67 4 − 49 + 57 K. From the L ′ − F 444 W color and magnitudes, we find evidence for disequilibrium chemistry or enhanced metallicity in the planet's atmosphere. Additionally, an extended structure is detected in the JWST F200W observation, consistent with a resolved debris disk with a peak density radius of 7 9 − 3 + 3 au and an inclination of 56 . ° 5 − 1.5 + 1.5 RX J0534 b is one of the lowest-mass planets imaged to date. After TWA 7 b, it is the second imaged planet around an M dwarf orbiting at solar system scales (the first within 40 au) and the first to be confirmed via common proper motion. Future orbital monitoring and atmospheric characterization will shed light on its formation history, a particularly interesting question given the challenging nature of giant planet formation around M dwarfs.",
  "abstract_shown": true,
  "affiliations": [
    "Northwestern University",
    "University of Arizona",
    "University of Maryland",
    "Astrophysics Science Division",
    "Center for Research and Exploration in Space Science and Technology",
    "Space Telescope Science Institute (STScI)",
    "University of Edinburgh",
    "University of Exeter",
    "Johns Hopkins University",
    "the University of Dublin",
    "Large Binocular Telescope Observatory",
    "Laboratoire d’Astrophysique de Marseille",
    "Towson University",
    "Eureka Scientific Inc.",
    "University of California",
    "UK Astronomy Technology Centre",
    "University of Victoria",
    "California Institute of Technology",
    "University of Hawai’i",
    "Space Telescope Science Institute",
    "University of Texas at Austin",
    "Centro de Astrobiología (CAB",
    "University of Michigan",
    "University of Warwick",
    "European Southern Observatory",
    "Max Planck Institute for Intelligent Systems",
    "Max Planck Institute for Astronomy",
    "Universit’e Cote d’Azur"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 51,
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        0
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      "name": "Rodrigo Ferrer-Chavez",
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        0
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      "name": "Jason J. Wang",
      "orcid": "0000-0003-0774-6502"
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    {
      "affs": [
        1
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      "name": "Kevin Wagner",
      "orcid": "0000-0002-4309-6343"
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        2,
        3,
        4
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      "name": "Kellen Lawson",
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    {
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        5
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      "name": "Aarynn L. Carter",
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    {
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      "name": "Beth Biller",
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      "name": "Raphaël Bendahan-West",
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      "name": "Patrick McCreery",
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      "name": "Patricia Luppe",
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        1
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      "name": "Steve Ertel",
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      "name": "Andrew D. James",
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      "name": "Ellis Bogat",
      "orcid": "0000-0002-7325-5990"
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      "name": "Rohan Kane",
      "orcid": "0009-0009-1074-3696"
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      "name": "Ben J. Sutlieff",
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      "name": "Giovanni M. Strampelli",
      "orcid": "0000-0002-1652-420X"
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      "name": "William O. Balmer",
      "orcid": "0000-0001-6396-8439"
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      "name": "Rachel Bowens-Rubin",
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      "name": "Evelyn L. Bruinsma",
      "orcid": "0009-0001-0275-7811"
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      "name": "Andy Skemer",
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      "name": "Julien H. Girard",
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        15
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      "name": "Mark Booth",
      "orcid": "0000-0001-8568-6336"
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      "name": "Klaus Subbotina Stephenson",
      "orcid": "0009-0008-2252-7969"
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    {
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        5
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      "name": "Katie A. Crotts",
      "orcid": "0000-0003-4909-256X"
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      "name": "Sebastian Marino",
      "orcid": "0000-0002-5352-2924"
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      "name": "Aniket Sanghi",
      "orcid": "0000-0002-1838-4757"
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        18
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      "name": "Michael Liu",
      "orcid": "0000-0003-2232-7664"
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      "affs": [
        18
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      "name": "Nour Skaf",
      "orcid": "0000-0002-9372-5056"
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      "affs": [
        19
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      "name": "Emily Rickman",
      "orcid": "0000-0003-4203-9715"
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      "affs": [
        19
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      "name": "Marshall D. Perrin",
      "orcid": "0000-0002-3191-8151"
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        19
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      "name": "Laurent Pueyo",
      "orcid": "0000-0003-3818-408X"
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      "name": "Brendan P. Bowler",
      "orcid": "0000-0003-2649-2288"
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        20
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      "name": "James Mang",
      "orcid": "0000-0001-5864-9599"
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    {
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      "name": "Isabel Rebollido",
      "orcid": "0000-0002-4388-6417"
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      "name": "Michael Meyer",
      "orcid": "0000-0003-1227-3084"
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        23
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      "name": "Tim Pearce",
      "orcid": "0000-0001-5653-5635"
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        25
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      "name": "Markus Bonse",
      "orcid": "0000-0003-2202-1745"
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    {
      "affs": [
        6
      ],
      "name": "Clémence Fontanive",
      "orcid": "0000-0002-2428-9932"
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    {
      "affs": [
        1
      ],
      "name": "Jared Carlson"
    },
    {
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        10
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      "name": "Jon Rees",
      "orcid": "0000-0002-5376-3883"
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    {
      "affs": [
        10
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      "name": "Justin Rupert"
    },
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        1
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      "name": "Gabriel Weible",
      "orcid": "0000-0001-8009-8383"
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    {
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        1
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      "name": "Jacob Isbell",
      "orcid": "0000-0002-1272-6322"
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    {
      "affs": [
        10
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      "name": "Juan Carlos Guerra"
    },
    {
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        6
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      "name": "Xueqing Chen",
      "orcid": "0009-0005-9339-2369"
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    {
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        6
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      "name": "Mia Belle Parkinson",
      "orcid": "0009-0006-3044-9011"
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      "name": "Vito Squicciarini",
      "orcid": "0000-0002-3122-6809"
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      "name": "Gael Chauvin",
      "orcid": "0000-0003-4022-8598"
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      "name": "Elisabeth Matthews",
      "orcid": "0000-0003-0593-1560"
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      "name": "Kyle Franson",
      "orcid": "0000-0003-4557-414X"
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      "name": "Maxwell A. Millar-Blanchaer",
      "orcid": "0000-0001-6205-9233"
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        7
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      "name": "Sasha Hinkley",
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  ],
  "bibtex": "https://research.draconitic.com/paper/3tqcxxpsrmejp.bib",
  "cited_by": 0,
  "doi": "10.3847/2041-8213/aea906",
  "fulltext_url": null,
  "id": "3tqcxxpsrmejp",
  "issns": [
    "2041-8205",
    "2041-8213"
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  "landing_url": "https://iopscience.iop.org/article/10.3847/2041-8213/aea906",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
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  "native_subjects": [
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      "openalex",
      "3103|Stellar, planetary, and galactic studies"
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  "pdf_url": "https://iopscience.iop.org/article/10.3847/2041-8213/aea906/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-09",
  "publisher": "American Astronomical Society",
  "ris": "https://research.draconitic.com/paper/3tqcxxpsrmejp.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:13Z",
      "native_id": "10.3847/2041-8213/aea906",
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      "url": "https://iopscience.iop.org/article/10.3847/2041-8213/aea906"
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  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Stellar, planetary, and galactic studies",
      "subfield": "stellar"
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  ],
  "title": "The JWST Sub-Jupiters Survey: Direct-imaging Discovery of a Giant Planet and a Debris Disk around the Young M Dwarf RX J0534.0-0221",
  "title_text": "The JWST Sub-Jupiters Survey: Direct-imaging Discovery of a Giant Planet and a Debris Disk around the Young M Dwarf RX J0534.0-0221",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:13Z",
  "url": "https://research.draconitic.com/paper/3tqcxxpsrmejp",
  "venue": "The Astrophysical Journal Letters",
  "versions": []
}