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Published July 23, 2021 | Version v1
Poster Open

Compact hierarchical triple star candidates in and near the Northern Continuous Viewing Zone of TESS

  • 1. Baja Astronomical Observatory of Szeged University, Hungary
  • 2. Konkoly Observatory, Hungary

Description

There are thousands of previously known and newly identified eclipsing binaries observed almost continuously for nearly a year long during Year 2 of the TESS mission. These precise and unique data sets give us an opportunity to measure a significant amount of their eclipse times on a time-scale comparable to the usual outer orbital periods of compact hierarchical triple stellar systems (below 1-2 years). In our project, we obtain the light curves from TESS Full-Frame Images of more than 4,000 eclipsing binaries observed at least during 8 Sectors and determine their eclipse timing variations in order to search for the signals of third-body perturbations and/or light travel time effect caused by an unseen, more distant component. We present orbital solutions for the identified triple systems and statistical considerations will also be discussed.

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Additional details

References

  • Borkovits T., Hajdu T., Sztakovics J. et al., 2016, MNRAS, 455, 4136
  • Hippke M., David T. J., Mulders G. D., Heller R., 2019, AJ, 158, 143
  • Pál A., 2012, MNRAS, 421, 1825