Seventy new non-eclipsing BEER binaries discovered in CoRoT lightcurves and confirmed by RVs from AAOmega

TL;DR

This study used the BEER algorithm on CoRoT lightcurves to identify 481 non-eclipsing binary candidates and confirmed 70 of them through radial velocity measurements, demonstrating an effective method for binary detection.

Contribution

The paper introduces a new application of the BEER algorithm to CoRoT data, successfully identifying and confirming non-eclipsing binary stars using RV follow-up.

Findings

Identified 481 BEER binary candidates in CoRoT data.

Confirmed 70 binaries through RV measurements with ~1 km/s precision.

Detected binary periods ranging from 0.3 to 10 days.

Abstract

We applied the BEER algorithm to the CoRoT lightcurves from the first five LRc fields and identified $481$ non-eclipsing BEER candidates with periodic lightcurve modulations and amplitudes of $0.5-87$ mmag. Medium-resolution spectra of $281$ candidates were obtained in a seven-night AAOmega radial-velocity (RV) campaign, with a precision of $\sim1$ km/s. The RVs confirmed the binarity of $70$ of the BEER candidates, with periods of $0.3-10$ days.