Pulsation in TESS Objects of Interest

Author(s):Show less -

Gomes, R. L. ; Martins, B. L. Canto ; Fontinele, D. O. ; Almeida, L. A. ; Freire, R. Alves ; Brito, A. C. ; de Amorim, R. G. S. B. ; Lopes, C. E. Ferreira ; Hazarika, D. ; Janot-Pacheco, E. ; Leao, I. C. ; Messias, Y. S. ; Souza, R. A. A. ; De Medeiros, J. R.

• Document type: Journal article
• Source: ASTROPHYSICAL JOURNAL; v. 961, n. 1, p. 12-pg., 2024-01-01.

Abstract

We report the discovery of three Transiting Exoplanet Survey Satellite Objects of Interest (TOI) with signatures of pulsation, observed in more than one sector. Our main goal is to explore how large is the variety of classical pulsators such as delta Sct, gamma Dor, RR Lyrae and Cepheid among TOI pulsators. The analysis reveals two stars with signatures of delta Sct and one of gamma Dor, out of a sample of 3901 TOIs with available light curves (LCs). To date, there is a very scarce number of known pulsating stars hosting planets. The present finding also emerges as an exciting laboratory for studying different astrophysical phenomena, including the effects of star-planet interaction on pulsation and timing detection of planetary companions. We have also identified 16 TOI stars with periodicities and LCs morphology compatible with different classical pulsating classes, but for most of them, the dominant frequency signals originate from contaminating sources. (AU)

• FAPESP's process: 16/13750-6 - Brazil in space: Astrophysics and Engineering
• Grantee: Eduardo Janot Pacheco
• Support Opportunities: Special Projects