Formation of terrestrial planets in close binary systems: the case of Alpha Centauri A

Details Formation of terrestrial planets in close binary systems: the case of Alpha Centauri A Formation of terrestrial planets in close binary systems: the case of Alpha Centauri A

2002-09-06

arxiv.org/abs/astro-ph/0209118v1

Astron.Astrophys. 396 (2002) 219-224

Astronomy and Astrophysics

Astrophysics

accepted for pubblication in A&A, 13 pages, 9 figures

Scientific paper

10.1051/0004-6361:20021357

At present the possible existence of planets around the stars of a close binary system is still matter of debate. Can planetary bodies form in spite of the strong gravitational perturbations of the companion star? We study in this paper via numerical simulation the last stage of planetary formation, from embryos to terrestrial planets in the Alpha Cen system, the prototype of close binary systems. We find that Earth class planets can grow around Alpha Cen A on a time-scale of 50 Myr. In some of our numerical models the planets form directly in the habitable zone of the star in low eccentric orbits. In one simulation two of the final planets are in a 2:1 mean motion resonance that, however, becomes unstable after 200 Myr. During the formation process some planetary embryos fall into the stars possibly altering their metallicity.

Affiliated with

Also associated with

No associations

Rating

Formation of terrestrial planets in close binary systems: the case of Alpha Centauri A does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Formation of terrestrial planets in close binary systems: the case of Alpha Centauri A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Formation of terrestrial planets in close binary systems: the case of Alpha Centauri A will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-669488