X-Ray Irradiation of the Giant Planet Orbiting the T Tauri Star TAP 26
- Author(s)
- Stephen L. Skinner, Manuel Güdel
- Abstract
We present new Chandra X-ray observations of TAP 26, a ≈17 Myr old magnetically active weak-lined T Tauri star that has been reported to host a massive planet in a ≈10.8 day orbit. At a separation of a = 0.097 au the planet will be exposed to intense X-ray and UV radiation from the star. The first observation caught the star in a state of elevated X-ray emission with variability on a timescale of a few hours and an X-ray temperature kT x ≈ 2-4 keV. Two subsequent observations 5-10 days later showed slow variability and a lower X-ray flux and temperature (kT x ≈ 1 keV). We characterize the X-ray emission and estimate the X-ray ionization and heating rates that will need to be incorporated into realistic models of the planet’s atmosphere.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- University of Colorado, Boulder
- Journal
- Astrophysical Journal
- Volume
- 967
- No. of pages
- 8
- ISSN
- 0004-637X
- DOI
- https://doi.org/10.3847/1538-4357/ad4465
- Publication date
- 06-2024
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103003 Astronomy, 103004 Astrophysics
- ASJC Scopus subject areas
- Astronomy and Astrophysics, Space and Planetary Science
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/bd0ffea0-c186-4e06-9e19-4bfb3e96f85d