Optimizing radial velocity detection limits for Southern Habitable Worlds Observatory targets
Article
Wittenmyer, Robert A, Errico, Adriana, Holt, Timothy R, Horner, Jonathan, Harada, Caleb K., Kane, Stephen R., Li, Zhexing and Fetherolf, Tara. 2025. "Optimizing radial velocity detection limits for Southern Habitable Worlds Observatory targets." Monthly Notices of the Royal Astronomical Society. 539 (1), pp. 457-462. https://doi.org/10.1093/mnras/staf503
Article Title | Optimizing radial velocity detection limits for Southern Habitable Worlds Observatory targets |
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ERA Journal ID | 1074 |
Article Category | Article |
Authors | Wittenmyer, Robert A, Errico, Adriana, Holt, Timothy R, Horner, Jonathan, Harada, Caleb K., Kane, Stephen R., Li, Zhexing and Fetherolf, Tara |
Journal Title | Monthly Notices of the Royal Astronomical Society |
Journal Citation | 539 (1), pp. 457-462 |
Number of Pages | 6 |
Year | 2025 |
Publisher | Oxford University Press |
Place of Publication | United Kingdom |
ISSN | 0035-8711 |
1365-2966 | |
Digital Object Identifier (DOI) | https://doi.org/10.1093/mnras/staf503 |
Web Address (URL) | https://academic.oup.com/mnras/article/539/1/457/8099936 |
Abstract | The planned NASA Habitable Worlds Observatory (HWO) flagship mission aims to image and spectroscopically characterize 25 Earth-sized planets in the habitable zones of their stars. However, one giant planet in the habitable zone can ruin your whole day. Recent work has examined the current state of our knowledge on the presence or absence of such objects in samples of likely HWO targets, and that knowledge has been found wanting; even Saturn-mass planets remain undetectable in many of these systems. In this work, we present simulations assessing the degree to which new campaigns of high-cadence radial velocity (RV) observations can ameliorate this woeful state of affairs. In particular, we highlight the value of moderate-precision but highly flexibly scheduled RV facilities in aiding this necessary HWO precursor science. We find that for a subset of Southern HWO stars, 6 yr of new RVs from the MINERVA-Australis telescope array in Australia can improve the median detection sensitivity in the habitable zones of 13 likely HWO targets to |
Keywords | exoplanets; techniques: radial velocities; planets and satellites: dynamical evolution and stability |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 510109. Stellar astronomy and planetary systems |
Byline Affiliations | Centre for Astrophysics |
University of California Berkeley, United States | |
University of California Riverside, United Sates |
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https://research.usq.edu.au/item/zy9v9/optimizing-radial-velocity-detection-limits-for-southern-habitable-worlds-observatory-targets
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