A search for variable subdwarf B stars in TESS Full Frame Images III. An update on variable targets in both ecliptic hemispheres – contamination analysis and new sdB pulsators

Authors

• Andrzej S. Baran, Missouri State UniversityFollow
• Sahoo, Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences;ARDASTELLA Research Group
• Worters, South African Astronomical Observatory
• Németh, ARDASTELLA Research Group;Academy of Sciences of the Czech Republic;Astroserver.org
• Kilkenny, University of the Western Cape

Abstract

We present an update on the variable star survey performed on the TESS 30 min Full Frame Image (FFI) data reported by our first two papers in this series. This update includes a contamination analysis in order to identify false positives and analysis of the TESS 10 min FFI data collected during Years 3 and 4 of the mission. We clarify the variability status of 2 995 targets identifying 1 403 variable stars. In addition, we spectroscopically classify 24 pre-filtered targets sampled with the 10 min FFI data and discover 11 new sdB pulsators. Future follow-up space- and/or ground-based data of variables reported here, to identify the nature of their variability and reveal spectroscopic parameters of the stars, would complement this work.

Department(s)

Physics, Astronomy, and Materials Science

Document Type

Article

DOI

10.1093/mnras/stac3676

Keywords

asteroseismology, stars: oscillations, subdwarfs

Publication Date

2-1-2023

Recommended Citation

Baran, Andrzej S.; Sahoo; Worters; Németh; and Kilkenny, "A search for variable subdwarf B stars in TESS Full Frame Images III. An update on variable targets in both ecliptic hemispheres – contamination analysis and new sdB pulsators" (2023). Faculty Scholarship. 618.
https://bearworks.missouristate.edu/articles00/618

Journal Title

Monthly Notices of the Royal Astronomical Society