000007782 001__ 7782
000007782 005__ 20260108174056.0
000007782 037__ $$aPOSTER-2026-0021
000007782 100__ $$aDe Cat, Peter
000007782 245__ $$aUnveiling stellar multiplicity: High-resolution spectroscopic follow-up of LAMOST discoveries
000007782 260__ $$c2025
000007782 269__ $$c2025-11-24
000007782 520__ $$aThe evolution of a star in a gravitationally bound stellar system can be significantly influenced by the proximity of its companion(s). However, the full range of these effects remains incompletely understood. Double-lined binaries and higher-order multiple-lined systems offer a clear advantage: the characteristics of more than one component can be extracted from high-resolution spectroscopy, providing stronger constraints for modeling efforts. In 2023, we initiated a spectroscopic follow-up program using the High Efficiency and Resolution Mercator Echelle Spectrograph (HERMES), mounted on the 1.2-m Mercator Telescope at the Roque de los Muchachos Observatory (La Palma, Canary Islands, Spain). The goal is to obtain spectroscopic data for an initial characterization of candidate double-lined and triple-lined systems recently identified by Frasca et al. (2022, A&A 664, A78) using medium-resolution observations from the Large Sky Area Multi-Object Fibre Spectroscopic Telescope (LAMOST) survey at Xinglong Observatory (Xinglong, China). For a comprehensive analysis, these new spectra will be combined with ground-based data from other facilities and with space-based light curves from the Kepler and TESS missions, in order to improve our understanding of these systems. In this poster, we present the first results after 1.5 years of HERMES observations. The project also stands to benefit from future observations with the high-resolution spectrograph that will be installed on the 3.6-m Devasthal Optical Telescope (DOT) at Devasthal Observatory (India), which will enable the study of fainter targets.
000007782 594__ $$aNO
000007782 700__ $$aFrasca, Antonio
000007782 700__ $$aAlonso-Santiago, Javier
000007782 700__ $$aCatanzaro, Giovanni
000007782 700__ $$aMolenda-Żakowicz, Joanna
000007782 700__ $$aWang, Jiangtao
000007782 700__ $$aLi, Chun-qian
000007782 700__ $$aShi, Jianrong
000007782 700__ $$aFu, Jianning
000007782 700__ $$aZong, Weikai
000007782 773__ $$tStellar Variability: Taking the Pulse of the Universe, Pune, India
000007782 8560_ $$fpeter.decat@ksb-orb.be
000007782 8564_ $$s7015417$$uhttp://publi2-as.oma.be/record/7782/files/Poster_DeCat_Peter.pdf
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000007782 980__ $$aCPOSTER