The Librating Companions in HD 37124, HD 12661, HD 82943, 47 Ursa Majoris, and GJ 876: Alignment or Antialignment?

2003/05/31 by Jianghui Ji, Lin Liu, H. Kinoshita +6 · 2 citations
Physics and Astronomy · #Astro and Planetary Science #Astrophysics and Star Formation Studies #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.1086/377038

published as Astrophys.J. 591 (2003) L57-L60 · 13 Pages, 3 figures, 2 tables, Published by ApJ Letters, 591, July 1, 2003 (Figures now included to match the publication)

openalex publication_date 2003/06/06 · arxiv created 2004/11/05 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30

Abstract

We investigated the apsidal motion for the multiplanet systems. In the simulations, we found that the two planets of HD 37124, HD 12661, 47 UMa, and HD 82943 separately undergo apsidal alignment or antialignment. However, the companions of GJ 876 and υ And are in apsidal lock only about 0°. Moreover, we obtained the criteria with Laplace-Lagrange secular theory to discern whether a pair of planets for a certain system are in libration or circulation.

Citations

• The Dynamical Simulations of the Planets Orbiting GJ 876
• Could the 55 Cancri Planetary System Really Be in the 3[rcolon]1 Mean Motion Resonance?

Cited by

• Long‐Term Stability and Dynamical Environment of the PSR 1257+12 Planetary System
• On secular resonances of small bodies in the planetary systems

Related

• The Stability Analysis of the Extrasolar Planetary Systems
• The Stability Analysis of the HD 82943 and HD 37124 Planetary Systems
• The HD 191939 Exoplanet System is Well-Aligned and Flat
• Detection of 27 candidate circumbinary planets through apsidal precession of eclipsing binaries observed by TESS
• The Stable Topology of the Planetary Systems of two 2:1 Resonant Companions:Application to HD 82943