In general, as the exo-Earth's eccentricity increases, it gets more sunlight from its star, making it less habitable in the inner regions and more habitable in the outer regions.
We looked at 147,456 different pairs of giant planets! This dataset is huge and 8-dimensional, so there's a LOT remaining to be found in it! You can play around with it yourself at: https://doi.org/10.5281/zenodo.6324216
A couple trends we saw:
• Mass of the giant planets ↑, relative habitability ↓
• Very low relative habitability when the giant planets are in the habitable zone
• Eccentricity of the giant planets ↑, relative habitability ↓
• Secular resonances can have big effects
While in general the presence of the giant planets reduces the relative habitability compared to a system with just an exo-Earth, there are some cases where the giant planets make the system "ultra-habitable":
If this thread got you excited, you can also watch me talk about this research: https://youtu.be/0smzHsburh8?t=1847
Ty!! 😊
@norasguidetothegalaxy congrat for this ! it's really cool you can do a PhD defense _and_ a great learning video in one shot ... I enjoyed it all ;)
For each giant planet pair, we consider 80 different locations of the exo-Earth. At each of these locations, we find the stability and habitability probabilities. Then we can integrate over the exo-Earth locations to find a relative habitability for the giant planet pair.