A simple model to describe intrinsic stellar noise for exoplanet detection around red giants
arXiv:1610.08688 · doi:10.1093/mnras/stw2782
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.
arXiv commentAccepted for publication in MNRAS, 9 pages, 10 figures
References in corpus (47)
- The Transiting Exoplanet Survey Satellite
- Kepler Mission Design, Realized Photometric Performance, and Early Science
- Planet Occurrence within 0.25 AU of Solar-type Stars from Kepler
- The false positive rate of Kepler and the occurrence of planets
- Characteristics of planetary candidates observed by Kepler, II: Analysis of the first four months of data
- Kepler Presearch Data Conditioning II - A Bayesian Approach to Systematic Error Correction
- A box-fitting algorithm in the search for periodic transits
- On the Unique Solution of Planet and Star Parameters from an Extrasolar Planet Transit Light Curve
- The NASA Exoplanet Archive: Data and Tools for Exoplanet Research
- Kepler Presearch Data Conditioning I - Architecture and Algorithms for Error Correction in Kepler Light Curves
- Rotation Periods of 34,030 Kepler Main-Sequence Stars: The Full Autocorrelation Sample
- Overview of the Kepler Science Processing Pipeline
- Gravity modes as a way to distinguish between hydrogen- and helium-burning red giant stars
- Asteroseismology of Solar-Type and Red-Giant Stars
- Ages and fundamental properties of Kepler exoplanet host stars from asteroseismology
- Asteroseismic fundamental properties of solar-type stars observed by the NASA Kepler Mission
- Initial Characteristics of Kepler Long Cadence Data For Detecting Transiting Planets
- Stellar Spin-Orbit Misalignment in a Multiplanet System
- The connection between stellar granulation and oscillation as seen by the Kepler mission
- The Derivation, Properties and Value of Kepler's Combined Differential Photometric Precision
- Probing the core structure and evolution of red giants using gravity-dominated mixed modes observed with Kepler
- Asteroseismic classification of stellar populations among 13000 red giants observed by Kepler
- Precise Radial Velocities of Giant Stars VII. Occurrence Rate of Giant Extrasolar Planets as a Function of Mass and Metallicity
- Kepler Mission Stellar and Instrument Noise Properties
- Characterization of the power excess of solar-like oscillations in red giants with Kepler
- The underlying physical meaning of the relation
- Distant future of the Sun and Earth revisited
- An ancient extrasolar system with five sub-Earth-size planets
- Transit Timing Observations from Kepler: VII. Confirmation of 27 planets in 13 multiplanet systems via Transit Timing Variations and orbital stability
- Granulation in Red Giants: observations by the Kepler mission and 3D convection simulations
- The asteroseismic potential of TESS: exoplanet-host stars
- Kepler-91b: a planet at the end of its life. Planet and giant host star properties via light-curve variations
- Evidence for the Tidal Destruction of Hot Jupiters by Subgiant Stars
- Automated preparation of Kepler time series of planet hosts for asteroseismic analysis
- Characterisation of red-giant stars in the public Kepler data
- Retired A Stars and Their Companions II: Jovian planets orbiting kappa Coronae Borealis and HD167042
- Kepler-432: a red giant interacting with one of its two long period giant planets
- Transits and Occultations
- Radial Velocity Observations and Light Curve Noise Modeling Confirm That Kepler-91b is a Giant Planet Orbiting a Giant Star
- Measuring Transit Signal Recovery in the Kepler Pipeline I: Individual Events
- Amplitudes and lifetimes of solar-like oscillations observed by CoRoT* Red-giant versus main-sequence stars
- Kepler-432 b: a massive planet in a highly eccentric orbit transiting a red giant
- Kepler Mission Stellar and Instrument Noise Properties Revisited
- BD+48 740 - Li overabundant giant star with a planet. A case of recent engulfment?
- The Dynamics of the Multi-planet System Orbiting Kepler-56
- Kepler-432 b: a massive warm Jupiter in a 52-day eccentric orbit transiting a giant star
- What asteroseismology can do for exoplanets