{
  "abstract": "Precise and accurate measurements of host stars are crucial in the search for Earth-like exoplanets, and M-dwarfs are favourable targets in this quest. Low-mass eclipsing binaries offer unique opportunities to empirically determine stellar masses and radii for low-mass stars where stellar models may be systematically biased. We present results from the EBLM-North sample, the largest homogeneous study of low-mass eclipsing binaries with secondary characterisation yet, combining high-resolution and high-precision radial velocities from SOPHIE and TESS photometry. We measure a median precision for stellar companions of 4.2% in radius and 8.6% in mass within a sub-sample of 50 high-quality binaries, all with orbital periods $P_{\\rm bin} > 5\\,\\rm days$. We compare our data to the Baraffe and MIST isochrones, and find our sample is statistically consistent with those models, producing reduced chi-squared values, $χ^2_ν\\sim 1$. Our measured radius inflation is $0.3\\pm 1.6$% indicating no statistically significant trend. We likewise detect no significant trend with metallicity, despite having the precision to identify such a relationship. As such, our observations do not appear to follow the general metallicity trend predicted in MIST. A $χ_ν^2 \\sim 1$ indicates the scatter in our results is commensurate with our uncertainties alone. These results constrain the scope for unmodelled effects on the mass-radius relation that would produce radius deviations greater than 4.2%. However, our secondary effective temperatures do not reproduce this high level of agreement with the models, and we do not recover the predicted trends with metallicity.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.18338",
  "author_total": 33,
  "authors": [
    {
      "name": "Yasmin T. Davis"
    },
    {
      "name": "Amaury H. M. J. Triaud"
    },
    {
      "name": "David V. Martin"
    },
    {
      "name": "Alix V. Freckelton"
    },
    {
      "name": "Jenni R. French"
    },
    {
      "name": "Adam T. Stevenson"
    },
    {
      "name": "Annelies Mortier"
    },
    {
      "name": "Karen Collins"
    },
    {
      "name": "Pierre F. L. Maxted"
    },
    {
      "name": "Daniel Sebastian"
    },
    {
      "name": "Aleyna Adamson"
    },
    {
      "name": "Thomas A. Baycroft"
    },
    {
      "name": "Isabelle Boisse"
    },
    {
      "name": "Gavin A. L. Coleman"
    },
    {
      "name": "Georgina Dransfield"
    },
    {
      "name": "Yilen Gómez Maqueo Chew"
    },
    {
      "name": "Leslie Hebb"
    },
    {
      "name": "Neda Heidari"
    },
    {
      "name": "Vedad Kunovac"
    },
    {
      "name": "James McCormac"
    },
    {
      "name": "Nikki J. Miller"
    },
    {
      "name": "Richard Nelson"
    },
    {
      "name": "Martin Nielsen"
    },
    {
      "name": "Alexandre Santerne"
    },
    {
      "name": "Madison G. Scott"
    },
    {
      "name": "Owen Scutt"
    },
    {
      "name": "Alexis M. S. Smith"
    },
    {
      "name": "Matthew R. Standing"
    },
    {
      "name": "Amalie Stokholm"
    },
    {
      "name": "Matthew I. Swayne"
    },
    {
      "name": "Mathilde Timmermans"
    },
    {
      "name": "Peter J. Wheatley"
    },
    {
      "name": "Emma Willett"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e8ymv32zhypdr.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.18338",
  "fulltext_url": null,
  "id": "e8ymv32zhypdr",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.18338",
  "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.SR"
    ],
    [
      "openalex",
      "3103|Stellar, planetary, and galactic studies"
    ]
  ],
  "openalex": "W7221788463",
  "pdf_url": "https://arxiv.org/pdf/2610.18338",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-13",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/e8ymv32zhypdr.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:11Z",
      "native_id": "2610.18338",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.18338"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.EP",
      "subfield": "planetary"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    }
  ],
  "title": "The EBLM Project - XIX. The absence of radius inflation in a homogeneous analysis of 66 Northern low-mass eclipsing binaries",
  "title_text": "The EBLM Project - XIX. The absence of radius inflation in a homogeneous analysis of 66 Northern low-mass eclipsing binaries",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:11Z",
  "url": "https://research.draconitic.com/paper/e8ymv32zhypdr",
  "venue": "arXiv",
  "versions": []
}