Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.8201c&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #82.01; Bulletin of the American Astronomical Society, V
Astronomy and Astrophysics
Astronomy
Scientific paper
Gamma Cephei is a spectroscopic binary consisting of a 1.59 solar-mass K1 IV subgiant primary star and a 0.34-0.92 solar-mass red giant secondary star. The primary of this system is host to a 1.7 Jupiter-mass planet at approximately 2.1 AU and with an eccentricity of 0.12. Numerical simulations were carried out on the dynamical stability of additional hypothetical planets located 3 to 5 AU from the primary star. To ensure a comprehensive search, various values for the mass, eccentricity, and inclination of the additional Jupiter-like planets were used. Similar simulations were also carried out for possible Saturnand Neptune-like planets within the same range. Results indicate that Gamma Cephei appears to be dynamically full and no stable orbits of any additional planets were found.
This work was conducted by an NSF funded Research Experience for Undergraduates (REU) position for J.C. at the University of Hawaii's Institute for Astronomy. Support for N.H. by the NASA Astrobiology Institute under Cooperative Agreement NNA04CC08A at the Institute for Astronomy at the University of Hawaii-Manoa, is also acknowledged.
Castro Joseph
Haghighipour Nader
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