Radial velocity planet detection biases at the stellar rotational period
Article
Article Title | Radial velocity planet detection biases at the stellar rotational period |
---|---|
ERA Journal ID | 1074 |
Article Category | Article |
Authors | Vanderburg, Andrew (Author), Plavchan, Peter (Author), Johnson, John Asher (Author), Ciardi, David R. (Author), Swift, Jonathan (Author) and Kane, Stephen R. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 459 (4), pp. 3565-3573 |
Number of Pages | 9 |
Year | 2016 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stw863 |
Web Address (URL) | https://academic.oup.com/mnras/article/459/4/3565/2624019 |
Abstract | Future generations of precise radial velocity (RV) surveys aim to achieve sensitivity sufficient to detect Earth mass planets orbiting in their stars' habitable zones. A major obstacle to this goal is astrophysical RV noise caused by active areas moving across the stellar limb as a star rotates. In this paper, we quantify how stellar activity impacts exoplanet detection with radial velocities as a function of orbital and stellar rotational periods. We perform data-driven simulations of how stellar rotation affects planet detectability and compile and present relations for the typical time-scale and amplitude of stellar RV noise as a function of stellar mass. We show that the characteristic time-scales of quasi-periodic RV jitter from stellar rotational modulations coincides with the orbital period of habitable-zone exoplanets around early M-dwarfs. These coincident periods underscore the importance of monitoring the targets of RV habitable-zone planet surveys through simultaneous photometric measurements for determining rotation periods and activity signals, and mitigating activity signals using spectroscopic indicators and/or RV measurements at different wavelengths. |
Keywords | Planets and satellites: detection; Techniques: radial velocities; |
ANZSRC Field of Research 2020 | 519999. Other physical sciences not elsewhere classified |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2016 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Byline Affiliations | Center for Astrophysics Harvard and Smithsonian, United States |
Missouri State University, United States | |
National Aeronautics and Space Administration (NASA), United States | |
Thacher School, United States | |
San Francisco State University, United States | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q42zq/radial-velocity-planet-detection-biases-at-the-stellar-rotational-period
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