تقرير
Significant mutual inclinations between the stellar spin and the orbits of both planets in the HAT-P-11 system
| العنوان: | Significant mutual inclinations between the stellar spin and the orbits of both planets in the HAT-P-11 system |
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| المؤلفون: | An, Qier, Lu, Tiger, Brandt, G. Mirek, Brandt, Timothy D, Li, Gongjie |
| سنة النشر: | 2024 |
| المجموعة: | Astrophysics |
| مصطلحات موضوعية: | Astrophysics - Earth and Planetary Astrophysics |
| الوصف: | Planet-star and planet-planet obliquity encode a planetary system's dynamical history, but both obliquities are hard to measure for misaligned systems with close-in companions. HAT-P-11 is a K4 star with two known planets: a close-in, misaligned super-Neptune with a approx 5-day orbit, and an outer super-Jupiter with a approx 10-year orbit. In this work we present a joint orbit fit of HAT-P-11 system with astrometry and RV data. By combining our results with previous constraints on the orientation of the star and the inner planet, we find that all three angular momenta -- those of the star, planet b, and planet c -- are significantly misaligned. We confirm the status of planet c as a super-Jupiter, with 3.06 pm 0.42 Jupiter mass, at a semimajor axis of 4.192 pm 0.07 AU, and planet b's minimum mass of 0.073 pm 0.0053 Jupiter mass. We present the posterior probability distribution of obliquity between star A and planet c, and between planet b and planet c. Comment: 12 pages, 8 figures, submitted to AJ |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2405.19510 |
| رقم الأكسشن: | edsarx.2405.19510 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |