Planets around young active solar-type stars: assessing detection capabilities from a non-stabilized spectrograph
Article
Article Title | Planets around young active solar-type stars: assessing detection capabilities from a non-stabilized spectrograph |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Heitzmann, A. (Author), Marsden, S. C. (Author), Petit, P. (Author), Mengel, M. W. (Author), Wright, D. (Author), Clerte, M. (Author), Millburn, I. (Author), Folsom, C. P. (Author), Addison, B. C. (Author), Wittenmyer, R. A. (Author) and Waite, I. A. (Author) |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 505 (4), pp. 4989-5011 |
Number of Pages | 23 |
Year | 2021 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/stab1586 |
Web Address (URL) | https://academic.oup.com/mnras/article/505/4/4989/6291195 |
Abstract | Short-orbit gas giant planet formation/evolution mechanisms are still not well understood. One promising pathway to discriminate between mechanisms is to constrain the occurrence rate of these peculiar exoplanets at the earliest stage of the system's life. However, a major limitation when studying newly born stars is stellar activity. This cocktail of phenomena triggered by fast rotation, strong magnetic fields, and complex internal dynamics, especially present in very young stars, compromises our ability to detect exoplanets. In this paper, we investigated the limitations of such detections in the context of already acquired data solely using radial velocity data acquired with a non-stabilized spectrograph. We employed two strategies: Doppler Imaging and Gaussian Processes and could confidently detect hot Jupiters with a semi-amplitude of 100 m/s buried in the stellar activity. We also showed the advantages of the Gaussian Process approach in this case. This study serves as a proof of concept to identify potential candidates for follow-up observations or even discover such planets in legacy data sets available to the community. |
Keywords | Planets and satellites: detection; Planets and satellites: formation; Stars: activity; Stars: individual: HD 141943; Stars: pre-main-sequence; Techniques: radial velocities |
Related Output | |
Is part of | Exploring the origins and diversity of planetary systems: insights from young giant planets |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Public Notes | This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society ©: 2021 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved. |
Institution of Origin | University of Southern Queensland |
Byline Affiliations | Centre for Astrophysics |
Centre for Astrophysics | |
University of Toulouse, France | |
Royal Military College of Canada, Canada |
https://research.usq.edu.au/item/q6wv3/planets-around-young-active-solar-type-stars-assessing-detection-capabilities-from-a-non-stabilized-spectrograph
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