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

0568513 - ASÚ 2024 RIV GB eng J - Journal Article
Sahoo, S. K. - Baran, A.S. - Worters, H. L. - Németh, Péter - Kilkenny, D.
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.
Monthly Notices of the Royal Astronomical Society. Roč. 519, č. 2 (2023), s. 2486-2499. ISSN 0035-8711. E-ISSN 1365-2966
R&D Projects: GA ČR(CZ) GA22-34467S
Institutional support: RVO:67985815
Keywords : asteroseismology * stars oscillations * subdwarfs
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 4.8, year: 2022
Method of publishing: Limited access
https://doi.org/10.1093/mnras/stac3676

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.
Permanent Link: https://hdl.handle.net/11104/0341995