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Rotational variation in the chemically peculiar B0 star θ Car as seen by TESS.
- Source :
-
Monthly Notices of the Royal Astronomical Society . Aug2021, Vol. 505 Issue 4, p5725-5730. 6p. - Publication Year :
- 2021
-
Abstract
- θ Car is a bright well studied B0 type star in a close binary (P orb = 2.2 d) with an unseen companion. The system has enjoyed extensive spectroscopic characterization at multiple wavelengths, revealing narrow X-ray lines, a soft X-ray tail, and chemical peculiarities. The star was recently observed in high-cadence photometric time-series by the NASA TESS satellite. In this paper, we investigate the photometric variability and demonstrate that it is likely associated with surface brightness inhomogeneities rather than orbital modulation. We investigate the potential distribution of surface features required to produce the observed variability, and report a new rotational period of P rot = 2.2034 d to be commensurate with the orbital period. [ABSTRACT FROM AUTHOR]
- Subjects :
- *AUTOMOBILES
*SOFT X rays
*STELLAR rotation
*SURFACE potential
*BINARY stars
Subjects
Details
- Language :
- English
- ISSN :
- 00358711
- Volume :
- 505
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Monthly Notices of the Royal Astronomical Society
- Publication Type :
- Academic Journal
- Accession number :
- 151369290
- Full Text :
- https://doi.org/10.1093/mnras/stab1652