{
  "abstract": "Chemical tracers provide some of the strongest observational signatures of ongoing planet formation and localized dynamical perturbations in protoplanetary disks. In particular, sulfur-bearing molecules are predicted to be enhanced in regions of shock heating, ice sublimation, and gravitational instability. Here, we present high–angular resolution (≈0 . ″ 2) Atacama Large Millimeter/submillimeter Array observations of ¹² CO J = 3–2, ¹³ CO J = 3–2, CS J = 7–6, and SO J N = 8 ₈ –7 ₇ toward the large, edge-on Gomez’s Hamburger (“GoHam”; IRAS 18059-3211) disk. We detect a narrow, one-sided arc of SO emission that peaks near a previously identified gas overdensity, suggesting localized heating around an early-stage giant protoplanet or disk fragment. The edge-on geometry of GoHam enables us to place this chemical signature in the broader context of the disk gas and dust structure. To do so, we map the vertical distribution of molecular gas relative to millimeter- and (sub)micron-sized dust, identify a pronounced north–south continuum asymmetry, and detect non-Keplerian ¹² CO and ¹³ CO emission indicative of a disk wind. We also derive a dynamical stellar mass of 2.2 ± 0.5 M ⊙ and a revised dust extinction map–based distance of 139 ± 24 pc, which places GoHam in the outskirts of the Sco–Cen association. Together, these observations reveal a highly dynamic disk in which localized sulfur chemistry may trace one of the earliest observable stages of wide-separation giant planet formation.",
  "abstract_shown": true,
  "affiliations": [
    "University of Minnesota",
    "University of Virginia",
    "Massachusetts Institute of Technology",
    "Université Grenoble Alpes",
    "Institut de Radioastronomie Millimetrique (IRAM)",
    "Center for Astrophysics ∣",
    "Max Planck Institute for Astrophysics",
    "Max-Planck-Institut für Astronomie (MPIA)",
    "University of Michigan",
    "Univ. Bordeaux",
    "Université de Bordeaux",
    "Queen Mary University of London",
    "University of Leeds",
    "University of Belgrade",
    "The University of Arizona",
    "Zentrum für Astronomie der Universität Heidelberg",
    "University of Wisconsin–Madison"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 21,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Charles J. Law",
      "orcid": "0000-0003-1413-1776"
    },
    {
      "affs": [
        2
      ],
      "name": "Jensen Lawrence",
      "orcid": "0009-0007-5371-3548"
    },
    {
      "affs": [
        2
      ],
      "name": "Richard Teague",
      "orcid": "0000-0003-1534-5186"
    },
    {
      "affs": [
        1
      ],
      "name": "Zhe-Yu Daniel Lin",
      "orcid": "0000-0001-7233-4171"
    },
    {
      "affs": [
        3,
        4
      ],
      "name": "Romane Le Gal",
      "orcid": "0000-0003-1837-3772"
    },
    {
      "affs": [
        5
      ],
      "name": "Kristina Monsch",
      "orcid": "0000-0002-5688-6790"
    },
    {
      "affs": [
        6
      ],
      "name": "Gordian Edenhofer",
      "orcid": "0000-0003-3122-4894"
    },
    {
      "affs": [
        7
      ],
      "name": "Hans Baehr",
      "orcid": "0000-0002-0880-8296"
    },
    {
      "affs": [
        8
      ],
      "name": "Edwin A. Bergin",
      "orcid": "0000-0003-4179-6394"
    },
    {
      "affs": [
        1
      ],
      "name": "L. Ilsedore Cleeves",
      "orcid": "0000-0003-2076-8001"
    },
    {
      "affs": [
        9
      ],
      "name": "Anne Dutrey",
      "orcid": "0000-0003-2341-5922"
    },
    {
      "affs": [
        10
      ],
      "name": "Coralie Foucher",
      "orcid": "0009-0003-8967-9522"
    },
    {
      "affs": [
        9
      ],
      "name": "Stéphane Guilloteau",
      "orcid": "0000-0003-3773-1870"
    },
    {
      "affs": [
        11
      ],
      "name": "Thomas J. Haworth",
      "orcid": "0000-0002-9593-7618"
    },
    {
      "affs": [
        7
      ],
      "name": "Thomas Henning",
      "orcid": "0000-0002-1493-300X"
    },
    {
      "affs": [
        12
      ],
      "name": "John D. Ilee",
      "orcid": "0000-0003-1008-1142"
    },
    {
      "affs": [
        13
      ],
      "name": "Marija R. Jankovic",
      "orcid": "0000-0001-6684-6269"
    },
    {
      "affs": [
        7
      ],
      "name": "Kamber R. Schwarz",
      "orcid": "0000-0002-6429-9457"
    },
    {
      "affs": [
        14
      ],
      "name": "Ilaria Pascucci",
      "orcid": "0000-0001-7962-1683"
    },
    {
      "affs": [
        7,
        15
      ],
      "name": "Dmitry Semenov",
      "orcid": "0000-0002-3913-7114"
    },
    {
      "affs": [
        16
      ],
      "name": "Ke Zhang",
      "orcid": "0000-0002-0661-7517"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0qjygcce1n9fd.bib",
  "cited_by": 0,
  "doi": "10.3847/1538-4357/aea566",
  "fulltext_url": null,
  "id": "0qjygcce1n9fd",
  "issns": [
    "0004-637X",
    "1538-4357"
  ],
  "landing_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea566",
  "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/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "3103|Astrophysics and Star Formation Studies"
    ]
  ],
  "openalex": "W7212111113",
  "pdf_url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea566/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-19",
  "publisher": "American Astronomical Society",
  "ris": "https://research.draconitic.com/paper/0qjygcce1n9fd.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:11Z",
      "native_id": "10.3847/1538-4357/aea566",
      "source": "crossref",
      "url": "https://iopscience.iop.org/article/10.3847/1538-4357/aea566"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "openalex:3103|Astrophysics and Star Formation Studies",
      "subfield": "stellar"
    }
  ],
  "title": "The ALMA View of the Edge-on Gomez’s Hamburger System: A Highly Dynamic, Asymmetric Protoplanetary Disk Reveals the Earliest Phases of Giant Planet Formation",
  "title_text": "The ALMA View of the Edge-on Gomez’s Hamburger System: A Highly Dynamic, Asymmetric Protoplanetary Disk Reveals the Earliest Phases of Giant Planet Formation",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:11Z",
  "url": "https://research.draconitic.com/paper/0qjygcce1n9fd",
  "venue": "The Astrophysical Journal",
  "versions": []
}