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Updated Studies on Exomoons in the HD 23079 System
- Publication Year :
- 2021
-
Abstract
- We re-evaluate the outer edge of orbital stability for possible exomoons orbiting the radial velocity planet discovered in the HD 23079 system. In this system, a solar-type star hosts a Jupiter-mass planet in a nearly circular orbit in the outer stellar habitable zone. The outer stability limit of exomoons is deduced using $N$-body and tidal migration simulations considering a large range of initial conditions, encompassing both prograde and retrograde orbits. In particular, we extend previous works by evaluating many values in the satellite mean anomaly to identify and exclude regions of quasi-stability. Future observations of this system can make use of our results through a scale factor relative to the currently measured minimum mass. Using a constant time lag tidal model (Hut 1981), we find that plausible tidal interactions within the system are insufficient to induce significant outward migration toward the theoretical stability limit. While current technologies are incapable of detecting exomoons in this system, we comment on the detectability of putative moons through Doppler monitoring within direct imaging observations in view of future research capacities.<br />10 pages, 5 figures, 2 tables; accepted for publication in PASA
- Subjects :
- Physics
Earth and Planetary Astrophysics (astro-ph.EP)
Astronomy
Minimum mass
FOS: Physical sciences
Astronomy and Astrophysics
Mean anomaly
Planetary system
Radial velocity
Tidal Model
Space and Planetary Science
Planet
Circular orbit
Astrophysics::Earth and Planetary Astrophysics
Circumstellar habitable zone
Astrophysics - Earth and Planetary Astrophysics
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....e305a231da718a98f8efccb0ec13199a