2002A&A...396..219B


C.D.S. - SIMBAD4 rel 1.7 - 2019.08.21CEST06:25:15

2002A&A...396..219B - Astronomy and Astrophysics, volume 396, 219-224 (2002/12-2)

Formation of terrestrial planets in close binary systems: The case of α Centauri A.

BARBIERI M., MARZARI F. and SCHOLL H.

Abstract (from CDS):

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 α Cen system, the prototype of close binary systems. We find that Earth class planets can grow around α Cen A on a time-scale of 50Myr. 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 200Myr. During the formation process some planetary embryos fall into the stars possibly altering their metallicity.

Abstract Copyright:

Journal keyword(s): planetary nebulae: general

Simbad objects: 3

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Number of rows : 3

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 V* V645 Cen Fl* 14 29 42.9451234609 -62 40 46.170818907 14.21 12.95 11.13 9.45 7.41 M5.5Ve 867 0
2 * alf Cen B PM* 14 39 35.06311 -60 50 15.0992 2.89 2.21 1.33     K1V 856 1
3 * alf Cen A SB* 14 39 36.49400 -60 50 02.3737 0.96 0.72 0.01     G2V 1098 0

    Equat.    Gal    SGal    Ecl

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2019.08.21-06:25:15

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