Characterisation of 92 Southern TESS Cool Dwarfs and a Tentative Radius Valley Detection with 100 Candidate Planets
Creators
- 1. Australian National University
Description
In Rains et al. 2021 (arXiv:2102.08133) we conducted a medium resolution optical (3,500 < λ < 7,000Å) spectroscopic survey of 92 cool (3,000 ≲ Teff ≲ 4,500 K) southern TESS candidate exoplanet hosts & 136 cool dwarf benchmarks using WiFeS on the ANU 2.3 m Telescope. We determine benchmark calibrated stellar Teff and R⭑ precise to 0.8% and 1.7% respectively, which we use to model the TESS transit light curves of our 100 candidate planets. Our resulting values of RP are precise to 3.5% and consistent with the 30 already confirmed planets. From this uniform analysis we see further tentative evidence that the exoplanet radius valley is present for planets orbiting cool dwarfs—a historically small, but now rapidly growing sample thanks to TESS—and investigate systematics in the TESS Input Catalogue.
Files
rains_tsm_poster_aug_2021.pdf
Files
(1.1 MB)
| Name | Size | Download all |
|---|---|---|
|
md5:79e642dfa250c526921ad86715b6ccc9
|
1.1 MB | Preview Download |
Additional details
Related works
- Is derived from
- Journal article: arXiv:2102.08133 (arXiv)
References
- Rains, Adam D. et al. (2021). 2021MNRAS.504.5788R