{
  "abstract": "The exceptionally large angular diameter and intrinsic optical faintness of the Galactic supernova remnant (SNR) G180.0-01.7 (S147) have historically hindered a comprehensive spectroscopic census of its filamentary structure. We present the first dedicated medium-resolution (R $\\sim$ 7500) spectroscopic study of S147 using the LAMOST medium-resolution spectroscopic survey of Galactic Nebulae. By implementing multi-Gaussian decomposition on the ${\\mathrm{H}\\,\\,\\alpha }$, [N ii], and [S ii] emission complexes and applying combined spectroscopic and spatial criteria, we disentangle the shock-ionized filaments of the SNR from the pervasive foreground and background diffuse ionized gas (DIG). Our analysis reveals a distinct bimodal radial velocity distribution for the SNR: a low-velocity population tracing the decelerated forward shock at a dense cavity wall, and a high-velocity population (with absolute radial velocities of $\\sim$70 $\\pm$ 30 $\\mathrm{km\\, s^{-1}}$) corresponding to ejecta within a low-density cavity. The coexistence of these populations provides kinematic evidence for the ‘supernova-in-a-cavity’ scenario. Furthermore, we detect enhanced [S ii]/${\\mathrm{H}\\,\\,\\alpha }$ ratios in the DIG along the eastern and northern boundaries of the remnant, signaling shock compression of the ambient interstellar medium and highlighting remnant’s multifaceted feedback.",
  "abstract_shown": true,
  "affiliations": [
    "National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101 ,",
    "CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences , Beijing 100101 ,"
  ],
  "article_type": null,
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  "author_total": 6,
  "authors": [
    {
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        0
      ],
      "name": "Juan-Juan Ren",
      "orcid": "0000-0003-3243-464X"
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        1
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      "name": "Wei Zhang"
    },
    {
      "affs": [
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        1
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      "name": "Chao-Jian Wu"
    },
    {
      "affs": [
        0
      ],
      "name": "Chao Liu",
      "orcid": "0000-0002-1802-6917"
    },
    {
      "affs": [
        0
      ],
      "name": "Jian-Jun Chen",
      "orcid": "0000-0003-4525-1287"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Hong Wu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ewq01t2pdk5vv.bib",
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  "doi": "10.1093/mnras/stag1813",
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  "id": "ewq01t2pdk5vv",
  "issns": [
    "1365-2966",
    "0035-8711"
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  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
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  "pmcid": null,
  "pmid": null,
  "published": "2026-10-24",
  "publisher": "Oxford University Press (OUP)",
  "ris": "https://research.draconitic.com/paper/ewq01t2pdk5vv.ris",
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    {
      "field": "physics",
      "origin": "openalex:3106|Astrophysics and Cosmic Phenomena",
      "subfield": "high-energy"
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  ],
  "title": "Decomposing the kinematics of SNR G180.0-01.7 with medium-resolution spectra",
  "title_text": "Decomposing the kinematics of SNR G180.0-01.7 with medium-resolution spectra",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:17Z",
  "url": "https://research.draconitic.com/paper/ewq01t2pdk5vv",
  "venue": "Monthly Notices of the Royal Astronomical Society",
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      "doi": "10.48550/arxiv.2610.12880",
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      "relation": "preprint",
      "title": "Decomposing the Kinematics of SNR G180.0-01.7 with Medium-Resolution Spectra",
      "venue": "arXiv"
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  ]
}