SIMBAD references

2010ApJ...718..543M - Astrophys. J., 718, 543-550 (2010/July-3)

Systemic: a testbed for characterizing the detection of extrasolar planets. II. Numerical approaches to the transit timing inverse problem.


Abstract (from CDS):

Transit timing variations (TTVs)–deviations from strict periodicity between successive passages of a transiting planet–can be used to probe the structure and dynamics of multiple-planet systems. In this paper, we examine prospects for numerically solving the so-called inverse problem, the determination of the orbital elements of a perturbing body from the TTVs it induces. We assume that the planetary systems under examination have a limited number of Doppler velocity measurements and show that a more extensive radial velocity (RV) characterization with precision comparable to the semi-amplitude of the perturber may remove degeneracies in the solution. We examine several configurations of interest, including (1) a prototypical non-resonant system, modeled after HD 40307 b and c, which contains multiple super-Earth-mass planets, (2) a hypothetical system containing a transiting giant planet with a terrestrial-mass companion trapped in low-order mean motion resonance, and (3) the HAT-P-13 system, in which forced precession by an outer perturbing body that is well characterized by Doppler RV measurements can give insight into the interior structure of a perturbing planet, and for which the determination of mutual inclination between the transiting planet and its perturber is a key issue.

Abstract Copyright:

Journal keyword(s): methods: numerical - planets and satellites: detection

Simbad objects: 11

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