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Resolving both components is difficult in high-contrast binaries, for instance, those composed of an FGK main-sequence star with an M-type companion. In those cases, the secondary can contribute $&amp;lt;1~{{\\ \\rm per\\ cent}}$ of the total flux in optical wavelengths. This makes measuring dynamical masses challenging and has typically only been attempted with large-aperture telescopes (8\u201310\u2009m). The High-Resolution Cross-Correlation Spectroscopy (HRCCS) method was developed to extract weak emission and transmission spectra for exoplanet atmospheres. This method was recently adapted and applied to measure dynamical masses in high-contrast binaries. In this work, we apply the HRCCS method to optical spectra of the high-contrast binary and circumbinary planet host Kepler-16 AB, obtained with the SOPHIE spectrograph at the 1.93-m telescope at the Observatoire de Haute-Provence. The secondary, which has a contrast ratio of $\\sim 6 \\times 10^{-3}$, is resolved with a detection significance of 9.5$\\sigma$. We derive dynamical masses with a precision of $1.5~{{\\ \\rm per\\ cent}}$ and $0.9~{{\\ \\rm per\\ cent}}$ for the primary and secondary, respectively. These are comparable, but slightly higher (within $2\\!-\\!7~{{\\ \\rm per\\ cent}}$), to previous mass-measurements, which has -within the uncertainties- no implication for the mass of the known circumbinary planet. This work demonstrates that dynamical mass measurements of high-contrast binaries can be done with 2-m class telescopes. We also investigate different analysis protocols to ensure we derive robust uncertainties for dynamical masses.<\/jats:p>","DOI":"10.1093\/mnras\/staf863","type":"journal-article","created":{"date-parts":[[2025,5,27]],"date-time":"2025-05-27T15:30:01Z","timestamp":1748359801000},"page":"2914-2922","source":"Crossref","is-referenced-by-count":4,"title":["EBLM XV \u2013 revised dynamical masses for the circumbinary planet host Kepler-16 AB, using the SOPHIE spectrograph"],"prefix":"10.1093","volume":"540","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2214-9258","authenticated-orcid":false,"given":"D","family":"Sebastian","sequence":"first","affiliation":[{"name":"School of Physics & Astronomy, University of Birmingham , Edgbaston, Birmimgham, B15 2TT ,","place":["UK"]}]},{"given":"I","family":"Boisse","sequence":"additional","affiliation":[{"name":"Aix Marseille Univ, CNRS, CNES, Institut Origines , Marseille LAM 13388 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