{
  "abstract": "We perform a self-consistent analysis of Doppler and photometric TESS and ground-based transit observations available for TOI-1408, known to host a system with two planets orbiting near 2:1 mean-motion commensurability and a distant companion. In general we confirm its orbital configuration derived in previous studies, however we found that the likelihood function contains multiple local maxima spread over a wider parametric domain, thus making some model uncertainties significantly larger than deemed before. In particular, the planet b radius still appears poorly constrained (from $\\sim 1.2$~$R_{\\rm Jup}$ to $\\sim 3.5$~$R_{\\rm Jup}$) because of the near-tangential transit geometry. We also show that the derived model is very prior-dependent regarding the astrophysical (spectrum-derived) constraints on the stellar mass $M_\\star$ and radius $R_\\star$. While such estimations may potentially contribute a significant information to the fit, their prior distribution must be accurately specified to be useful. Presently so accurate characterization (e.g. the correlation between $M_\\star$ and $R_\\star$) is not available in the literature.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.02434",
  "author_total": 1,
  "authors": [
    {
      "name": "Roman V. Baluev"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0w2fc1zhebabp.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.02434",
  "fulltext_url": null,
  "id": "0w2fc1zhebabp",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.02434",
  "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.EP"
    ],
    [
      "arxiv",
      "astro-ph.IM"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.02434",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/0w2fc1zhebabp.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:30:52Z",
      "native_id": "2610.02434",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.02434"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.IM",
      "subfield": "instrumentation-methods"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.EP",
      "subfield": "planetary"
    }
  ],
  "title": "TOI-1408: the limb darkening models, photometric and Doppler noises, and the exoplanetary system",
  "title_text": "TOI-1408: the limb darkening models, photometric and Doppler noises, and the exoplanetary system",
  "type": "preprint",
  "updated_at": "2026-10-30T12:33:41Z",
  "url": "https://research.draconitic.com/paper/0w2fc1zhebabp",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1088/1674-4527/aeb532",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}