Prospects of the Detection of Short-Period Terrestrial Planets in Resonant Orbits with Migrating Jovian Objects

Details Prospects of the Detection of Short-Period Terrestrial Planets in Resonant Orbits with Migrating Jovian Objects Prospects of the Detection of Short-Period Terrestrial Planets in Resonant Orbits with Migrating Jovian Objects

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.1707h&link_type=abstract

American Astronomical Society, AAS Meeting #211, #17.07; Bulletin of the American Astronomical Society, Vol. 39, p.768

Astronomy and Astrophysics

Astronomy

2

Scientific paper

Short-period terrestrial-mass objects are predicted to be captured into near mean-motion resonant orbits with migrating giant planets. These objects are potentially detectable via transit photometry of their host stars, or the measurement of the variations of the transit-timing due to their Jovian-mass planetary companions. The detectability of these objects requires their long-term stability implying that to determine the prospects of their detection, it is necessary to develop a detailed understanding of the interactions between close-in terrestrial and Jovian planets, and the region of their parameter-space for which a terrestrial-class object will be dynamically stable. We have carried out extensive numerical simulations of the dynamical evolution of a short-period Earth-like object in the vicinity of a close-in giant planet, and have identified the ranges of its orbital parameters for which the system is stable. Our results indicate that for a tidally locked Jovian body, a terrestrial-class object can be stable on low eccentricity and low inclination orbits. We have also been able to identify regions where a terrestrial planet can be in stable 1:2 or 1:3 mean-motion resonances with the giant planet. We present the results of our simulations and discuss their applicability to the detection of small-size objects via transit photometry and transit timing variation method.
This work has been supported by NASA Astrobiology Institute through cooperative agreement NNA04CC08A with the Institute for Astronomy at the University of Hawaii for NH.

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