| Autor: |
Covarrubias, Sofia, Blunt, Sarah, Wang, Jason J. |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Research Notes of the AAS, vol. 6, issue 3, (2022), pp: 66 Research Notes of the AAS, Volume 6, Number 3 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.3847/2515-5172/ac61d8 |
| Popis: |
While Keplerian orbits account for the majority of the astrometric motion of directly-imaged planets, perturbations due to N-body interactions allow us to directly constrain exoplanet masses in multiplanet systems. This has the potential to improve our understanding of massive directly-imaged planets, which nearly all currently have only model-dependent masses. The VLTI-GRAVITY instrument has demonstrated that interferometry can achieve 100x better astrometric precision (Gravity Collaboration et al. 2019) than existing methods, a level of precision that makes detection of planet-planet interactions possible. In this study, we show that in the HR-8799 system, planet-planet deviations from currently used Keplerian approximations (Lacour et al. 2021) are expected to be up to one-quarter of a milliarc-second within five years, which will make them detectable with VLTI-GRAVITY. Modeling of this system to directly constrain exoplanet masses will be crucial in order to make precise predictions. |
| Databáze: |
arXiv |
| Externí odkaz: |
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