{
  "abstract": "Using \\textit{Gaia} Data Release 3 combined with Dark Energy Spectroscopic Instrument Legacy Imaging Survey Data Release 9 and Panoramic Survey Telescope and Rapid Response System Data Release 2, we apply a modified matched filter method to obtain a weighted stellar map in the surrounding of the globular cluster NGC~5466. Our results support that the tidal stream of NGC~5466 extends around $80^\\circ$ on the sky, and the leading tail seemingly exhibits an upward deviation in the range of $180^\\circ \\lesssim α\\lesssim 190^\\circ$, which supports previous claim that the Large Magellanic Cloud (LMC) may have caused dynamical perturbations to the stream. Based on the 308 highly-weighted member candidates of the NGC~5466 stream, we try to measure the mass distribution of the Milky Way dark matter halo along with the mass of LMC. By comparing the observed stream candidate members to a series of model streams generated under different potential parameters, we obtain the posterior distributions of the parameters: the circular velocity at the solar radius $V_{\\rm c} = 239.56^{+1.46}_{-1.44}\\ \\mathrm{km\\ s^{-1}}$, the density flattening of the halo $q = 1.08^{+0.07}_{-0.07}$, the scale radius of the halo density profile $r_s = 12.97^{+3.02}_{-2.18}\\ \\mathrm{kpc}$ and the total mass of the LMC $M_{\\rm LMC} = 9.63^{+1.89}_{-2.00}\\times 10^{10}$ $\\mathrm{M_\\odot}$. The enclosed mass of the Milky Way within the stream apocenter radius of $\\sim$ 50 kpc is calculated as $M_{\\rm MW}(<50~\\mathrm{kpc}) = 4.59^{+0.48}_{-0.37} \\times 10^{11}$ $\\mathrm{M_\\odot}$.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.02653",
  "author_total": 5,
  "authors": [
    {
      "name": "Di Bai"
    },
    {
      "name": "Yong Yang"
    },
    {
      "name": "Jing-Kun Zhao"
    },
    {
      "name": "Xian-Hao Ye"
    },
    {
      "name": "Gang Zhao"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/a0y1r0ttvty7c.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.02653",
  "fulltext_url": null,
  "id": "a0y1r0ttvty7c",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.02653",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.GA"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.02653",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-02",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/a0y1r0ttvty7c.ris",
  "sources": [
    {
      "first_seen": "2026-11-03T12:20:59Z",
      "native_id": "2611.02653",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.02653"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    }
  ],
  "title": "See you again: an $80^\\circ$ NGC~5466 stellar stream and its constraints on the Galactic dark halo mass",
  "title_text": "See you again: an 80^∘ NGC~5466 stellar stream and its constraints on the Galactic dark halo mass",
  "type": "preprint",
  "updated_at": "2026-11-05T15:20:18Z",
  "url": "https://research.draconitic.com/paper/a0y1r0ttvty7c",
  "venue": "arXiv",
  "versions": []
}