{
  "abstract": "We present an analysis of a high-resolution optical spectrum of V1180 Cas obtained with HIRES at the W. M. Keck Observatory during a bright photometric state of the source. The spectrum is dominated by strong emission lines, including H$α$, the Ca II infrared triplet, He I, and O I, along with numerous Fe I and Fe II transitions and several forbidden lines such as [O I] and [S II], indicating ongoing accretion and mass-loss activity. A weak Li I $λ$6708 absorption feature confirms the youth of the source. Using the Li I absorption and selected Fe I emission lines, we report for the first time a radial velocity of $-16 \\pm 3$ km s$^{-1}$ for V1180 Cas. The H$α$ and H$β$ profiles exhibit asymmetric structures with blueshifted absorption components, suggesting outflowing material along the line of sight. The He I $λ$5876 line displays a narrow component likely associated with post-shock accretion regions and a broad, slightly blueshifted component probably arising from magnetospheric flows and/or inner disk winds. The [O I] $λ$6300 profile is decomposed into low- and high-velocity components, tracing a slow disk wind and a fast jet. Using the forbidden [O I] line, we estimate for the first time a disk inclination angle of $\\approx50^\\circ$. The derived mass accretion and jet mass-loss rates imply $\\dot{M}_{jet}/\\dot{M}_{acc} \\sim 0.01$--$0.03$, at the lower end of, but consistent with, the range observed for Class II YSOs. Forbidden-line diagnostics indicate densities $\\sim10^{3}$ and $10^{6}$ cm$^{-3}$ with temperatures of $\\sim10^{4}$ K, supporting a multi-component outflow scenario. Overall, the results support a picture in which V1180 Cas is an actively accreting, moderately inclined system hosting a multi-component outflow.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.01226",
  "author_total": 12,
  "authors": [
    {
      "name": "Tarak Chand"
    },
    {
      "name": "Saurabh Sharma"
    },
    {
      "name": "Koshvendra Singh"
    },
    {
      "name": "Joe P. Ninan"
    },
    {
      "name": "Arpan Ghosh"
    },
    {
      "name": "Devendra K. Ojha"
    },
    {
      "name": "Jyotirmoy Dey"
    },
    {
      "name": "Manojit Chakraborty"
    },
    {
      "name": "Kartik Gokhe"
    },
    {
      "name": "Aayushi Verma"
    },
    {
      "name": "Mamta"
    },
    {
      "name": "Ajay Kumar Singh"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/36hs0ea4m012e.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.01226",
  "fulltext_url": null,
  "id": "36hs0ea4m012e",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.01226",
  "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.SR"
    ],
    [
      "openalex",
      "3103|Stellar, planetary, and galactic studies"
    ]
  ],
  "openalex": "W7216265982",
  "pdf_url": "https://arxiv.org/pdf/2610.01226",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/36hs0ea4m012e.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:26:03Z",
      "native_id": "2610.01226",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.01226"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    }
  ],
  "title": "Probing Accretion and Outflow in V1180 Cas through High-Resolution Optical Spectroscopy",
  "title_text": "Probing Accretion and Outflow in V1180 Cas through High-Resolution Optical Spectroscopy",
  "type": "preprint",
  "updated_at": "2026-10-30T12:26:03Z",
  "url": "https://research.draconitic.com/paper/36hs0ea4m012e",
  "venue": "arXiv",
  "versions": []
}