The effect of Poynting-Robertson drag on the triangular Lagrangian points
- Autor(en)
- Christoph Lhotka, Alessandra Celletti
- Abstrakt
We investigate the stability of motion close to the Lagrangian equilibrium points L4 and L5 in the framework of the spatial, elliptic, restricted three-body problem, subject to the radial component of Poynting-Robertson drag. For this reason we develop a simplified resonant model, that is based on averaging theory, i.e. averaged over the mean anomaly of the perturbing planet. We find temporary stability of particles displaying a tadpole motion in the 1:1 resonance. From the linear stability study of the averaged simplified resonant model, we find that the time of temporary stability is proportional to βa1n1, where β is the ratio of the solar radiation over the gravitational force, and a1, n1 are the semi-major axis and the mean motion of the perturbing planet, respectively. We extend previous results (Murray, C.D. [1994]. Icarus 112, 465-484) on the asymmetry of the stability indices of L4 and L5 to a more realistic force model. Our analytical results are supported by means of numerical simulations. We implement our study to Jupiter-like perturbing planets, that are also found in extra-solar planetary systems.
- Organisation(en)
- Institut für Astrophysik
- Externe Organisation(en)
- Università degli Studi di Roma "Tor Vergata"
- Journal
- Icarus
- Band
- 250
- Seiten
- 249 - 261
- Anzahl der Seiten
- 13
- ISSN
- 0019-1035
- DOI
- https://doi.org/10.1016/j.icarus.2014.11.039
- Publikationsdatum
- 04-2015
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103003 Astronomie, 103004 Astrophysik
- Schlagwörter
- ASJC Scopus Sachgebiete
- Astronomy and Astrophysics, Space and Planetary Science
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/the-effect-of-poyntingrobertson-drag-on-the-triangular-lagrangian-points(dc370d42-3d4e-4b11-a795-fd3e3bd92c1e).html