CAOSP abstracts, Volume: 55, No.: 3, year: 2025

Author(s): Németh, P.; Vos, J.; Cabezas, M.
Journal: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 55, no. 3, p. 340-345.
Date: 04/2025
Title: Enhanced spectral disentangling techniques for long-period hot subdwarf binaries
Keyword(s): composite spectrum binaries
Pages: 340 -- 345
DOI: https://doi.org/10.31577/caosp.2025.55.3.340
NASA ADS Abstract Service: 2025CoSka..55c.340N
Citation:
License: This work is licensed under a Creative Commons Attribution 4.0 International License

Abstract: Wavelength space binary spectral disentangling is discussed with a data-driven, steepest-descent chi-square minimizing, global fitting procedure that applies stacked synthetic spectra to render composites. With additional constraints such as Gaia distance, mass ratio, orbital period, and separation of the binary members the stellar parameter precision can be improved even for non-eclipsing systems. We follow the orbits of 36 systems of which we discuss JL 277 here.