Multiples among detached eclipsing binaries from the ASAS catalog

TL;DR

This study presents a spectroscopic survey of over 300 detached eclipsing binaries from the ASAS catalog, revealing a diverse range of multiple star systems including triples, quadruples, and circumbinary companions.

Contribution

It provides the first large-scale spectroscopic analysis of DEBs from ASAS, identifying various multiple star configurations and potential sub-stellar companions.

Findings

Discovery of spectroscopic triples and quadruples

Identification of visual binaries with eclipsing components

Detection of circumbinary low-mass and sub-stellar candidates

Abstract

For more than three years now we have been conducting a spectroscopic survey of detached eclipsing binaries (DEBs) from the All-Sky Automated Survey (ASAS) database. Thousands of high-resolution spectra of over 300 systems were secured, and used for radial velocity measurements and spectral analysis. In our sample we found a zoo of multiple systems, such as spectroscopic triples and quadruples, visual binaries with eclipsing components, and circumbinary low-mass companions, including sub-stellar-mass candidates