Asteroid flux and water transport towards circumprimary habitable zones in binary star systems
- Author(s)
- David Bancelin, Elke Pilat-Lohinger, Siegfried Eggl, Helmut Lammer, Colin Johnstone, Thomas Maindl, Rudolf Dvorak
- Abstract
Dynamical simulations show that the outcome of planetary formation process can lead to various planetary architectures (i.e. location, size, mass and water content) when the star system is single or double. In the late phase of planetary formation, when embryosized objects dominate the inner region of the system, asteroids are also present and can provide additional material for objects inside the habitable zone (HZ). In this study, we make a comparison of several binary star systems' characteristics and their efficiency to move icy asteroids from beyond the snow-line into orbits crossing the HZ. In our results, we highlight the key role of secular and mean motion resonances, causing an efficient flux of asteroids to the HZ on a short timescale. This in turn leads to asteroids bearing a non negligeable amount of water towards the HZ and available for any planets or embryos moving in this area. We also discuss how mass loss mechanisms can alter the water content on asteroids' surface.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- Österreichische Akademie der Wissenschaften (ÖAW)
- Journal
- Abstracts of the EPSC-DPS
- Volume
- 10
- Publication date
- 10-2015
- Austrian Fields of Science 2012
- 103003 Astronomy, 103004 Astrophysics
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/6d4f3142-633e-4e59-ad04-bafe28fe2ba3