Journal
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 510, Issue 1, Pages 1515-1527Publisher
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stab3365
Keywords
binaries: spectroscopic; open clusters and associations: individual: M11
Categories
Funding
- Natural Science Foundation of China [11733008, 12090040, 12090043]
- European Research Council (ERC) under the European Union [670519]
- KU Leuven Research Council [C16/18/005: PARADISE]
- ESO Telescopes at the La Silla Paranal Observatory [188.B3002, 193.B-0936]
- University of Vienna
- Masaryk University
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Our new method successfully identifies double-lined spectroscopic binary candidates from high-resolution Gaia-ESO spectra, suitable for binaries with rapidly rotating components. Testing on synthetic and observational spectra in the M11 open cluster confirmed and discovered multiple SB2 candidates.
We have developed a new method for spectral analysis of binaries. Our method successfully identifies double-lined spectroscopic binary (SB2) candidates from high-resolution Gaia-ESO spectra. Compared to the commonly used cross-correlation function analysis, it works for binaries with rapidly rotating components. We test our method on synthetic and observational spectra of BAFG stars with vsin i from 1 to 330 km s(-1) in the open cluster M11. We confirm five previously detected SB2 candidates and find 19 new ones. For three SB2 candidates, we find circular orbits and obtain dynamical mass ratios.
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