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Abstract
In spite of the huge advances in exoplanet research provided by the NASA Kepler Mission, there remain only a small number of transit detections around evolved stars.
Here we present a reformulation of the noise properties of red-giant stars, where the intrinsic stellar granulation, and the stellar oscillations described by asteroseismology play a key role. The new noise model is a significant improvement on the current Kepler results for evolved stars. Our noise model may be used to help understand planet detection thresholds for the ongoing K2 and upcoming TESS missions, and serve as a predictor of stellar noise for these missions. As an application of our noise model, we explore the minimum detectable planet radii for red giant stars, and find that Neptune sized planets should be detectable around low luminosity red giant branch stars.
Here we present a reformulation of the noise properties of red-giant stars, where the intrinsic stellar granulation, and the stellar oscillations described by asteroseismology play a key role. The new noise model is a significant improvement on the current Kepler results for evolved stars. Our noise model may be used to help understand planet detection thresholds for the ongoing K2 and upcoming TESS missions, and serve as a predictor of stellar noise for these missions. As an application of our noise model, we explore the minimum detectable planet radii for red giant stars, and find that Neptune sized planets should be detectable around low luminosity red giant branch stars.
Original language | English |
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Pages (from-to) | 1308-1315 |
Journal | Royal Astronomical Society. Monthly Notices |
Volume | 465 |
Issue number | 2 |
Early online date | 28 Oct 2016 |
DOIs | |
Publication status | Published - Feb 2017 |
Keywords
- Astrophysics
- Solar and Stellar Astrophysics, Astrophysics
- Earth and Planetary Astrophysics
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Dive into the research topics of 'A simple model to describe intrinsic stellar noise for exoplanet detection around red giants'. Together they form a unique fingerprint.Projects
- 1 Finished
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Asteroseismology and Helioseismology at Birmingham and Queen Mary
Chaplin, B., Elsworth, Y. & Miglio, A.
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/04/15 → 30/09/18
Project: Research Councils