Iranian Journal of Physics Research

Searching the TESS data for binary systems discovered by the Gaia spectroscopic observations

Document Type : Original Article

Authors

Aref Asadi
Sedighe Sajadian

Department of Physics, Isfahan University of Technology, Isfahan, Iran

https://doi.org/10.47176/ijpr.26.1.12052
Abstract
In this paper, we report the results of searching the TESS data from spectroscopic binary systems discovered by the Gaia telescope. The TESS telescope with a high photometric resolution generaly observes bright and nearby stars with a cadence in the order of some minutes to half an hour. In this research, for 161 binary systems discovered through spectroscopic observations by the Gaia space telescope, we extract their photometric data taken by the TESS telescope to find any periodic either eclipse or self-lensing signal. Our aim was to determine the orbital inclination angle and other physical parameters of these systems if such signals are detected in their photometric data. We could not find such systems with photometric and periodic signals with the period exactly matching the orbital period reported by the Gaia telescope. Hence, none of systems are edge-on as seen by the observer. However, for some systems the periods of variations in their light curves are close to the orbital periods reported by the Gaia Telescope (differing by approximately 10 days or slightly more). In future, we aim to study their photometric data taken by other telescopes to resolve the nature of variations in their light curves.

Keywords

Spectroscopic binaries
Tess telescope
Gaia telescope
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