8050 20260306105537.0 CTALK-2026-0093 Merle, Thibault Exploring Spectroscopic Binaries: from SB9 to the 4MOST Large Survey 2025 2025-07-04 The properties of binary stars are fundamental for understanding star for- mation and evolution. Spectroscopic binaries (SBs) are genuine binaries that probe short to intermediate orbital periods, shedding light on various stellar evolution pathways. We propose: (i) to present the current status of the Ninth Catalogue of Spectroscopic Orbits (SB9) with the recent Non- Single Stars catalogue from Gaia DR3, focusing on SBs; (ii) to provide insights into the detectability and characterisation of SBs in a forthcoming large multi-object spectroscopic survey 4MOST, which is set to begin operations early next year. BELSPO/ FED-tWIN Prf-2020-033 BISTRO/ FED-tWIN Prf-2020-033 BISTRO NO Binary stars in the Space Era thibault.merle@ksb-orb.be https://www.astro.keele.ac.uk/jkt/keelebinaries2025/index.html 19447870 http://publi2-as.oma.be/record/8050/files/merle_sb9_gaia_4most.pdf 7263 http://publi2-as.oma.be/record/8050/files/merle_sb9_gaia_4most.gif?subformat=icon icon 7997 http://publi2-as.oma.be/record/8050/files/merle_sb9_gaia_4most.jpg?subformat=icon-180 icon-180 Contributed CTALKCONT