TESS Exploration of Targets Investigated for the Nainital-Cape Survey Project
Abstract
The Nainital-Cape Survey was initiated more than two decades ago aiming to search for and study the pulsational variability in two subclasses of chemically peculiar (CP) stars, namely the Ap and Am stars. In this paper, we present the TESS photometry of 4 targets out of the 381 sample stars observed under the survey, which were not studied before using TESS data. Our results suggest that HD34060 is a rotational variable, HD 25487 is of eclipsing nature, HD 15550 exhibits pulsational variability while HD48953 is a non-variable star. The diverse variability detected in the studied sources places important constraints for the study of the internal structure and evolution of the CP stars in the presence of surface inhomogeneity, magnetic field, rotation and pulsation.
- Publication:
-
Bulletin de la Societe Royale des Sciences de Liege
- Pub Date:
- June 2024
- DOI:
- 10.25518/0037-9565.11653
- arXiv:
- arXiv:2309.15879
- Bibcode:
- 2024BSRSL..93..227D
- Keywords:
-
- Telescope: TESS;
- stars : chemically peculiar;
- variables: pulsating;
- variables: eclipsing;
- variables: rotational;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- Accepted for publication in proceeding of the 3rd Belgo-Indian Network for Astronomy and Astrophysics (BINA) workshop, held in Bhimtal, Uttarakhand (India) on 22-24 March 2023