{
  "abstract": "We present the discovery and photometric study of a distant dwarf nova KSP-OT-201803a using BVI-band observation data obtained by using the KMTNet Supernova Program. One superoutburst (SO) and three normal outbursts are identified from two years of observations (2018-2019), which show that KSP-OT-201803a is an SU UMa-type dwarf nova (DN). Applying the phase dispersion minimization method to the superhump data during the plateau phase of the SO yields a superhump period of P_sh = 127.4 minutes (=2.123 hr =0.08847 days). By stacking ten images of the quiescent phase, we find the quiescent phase magnitude of V = 22.59 +/- 0.18 mag. The SO shows quiescent-to-peak amplitude of 4.97 +/- 0.18 mag and duration of 16.59 days which are typical for the SU UMa-type DNe. Using the superhump period-orbital period relation of SU UMa stars, we obtain the approximate distance of 3.7 +/- 0.3 kpc to KSP-OT-201803a and Galactocentric distance of 9.4 kpc and height from the Galactic plane of +1.2 kpc. Stars at these large distances may belong to the Galactic halo or thick disk, which contain old, metal-poor Population II stars; therefore, these systems may have undergone a different evolutionary process than Population I objects. The orbital period gap of DNe spans 2.45-3.18 hours. Assuming that the orbital period of KSP-OT-201803a is a few percent shorter than its superhump period, KSP-OT-201803a may have just emerged from the period gap and recently resumed mass transfer after crossing its lower boundary.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.05833",
  "author_total": 5,
  "authors": [
    {
      "name": "Sang Chul Kim"
    },
    {
      "name": "Youngdae Lee"
    },
    {
      "name": "Dae-Sik Moon"
    },
    {
      "name": "Hong Soo Park"
    },
    {
      "name": "Dong Wook Kim"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5cr2a317kyz2w.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.05833",
  "fulltext_url": null,
  "id": "5cr2a317kyz2w",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.05833",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.SR"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.05833",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-04",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/5cr2a317kyz2w.ris",
  "sources": [
    {
      "first_seen": "2026-11-05T15:20:56Z",
      "native_id": "2611.05833",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.05833"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    }
  ],
  "title": "Photometric Study of a Distant SU UMa-type Dwarf Nova KSP-OT-201803a",
  "title_text": "Photometric Study of a Distant SU UMa-type Dwarf Nova KSP-OT-201803a",
  "type": "preprint",
  "updated_at": "2026-11-09T00:20:19Z",
  "url": "https://research.draconitic.com/paper/5cr2a317kyz2w",
  "venue": "arXiv",
  "versions": []
}