Planets in Binary Star Systems

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Nader Haghighipour
Springer Science & Business Media, Jun 3, 2010 - Science - 332 pages
In 1988, in an article on the analysis of the measurements of the variations in the radial velocities of a number of stars, Campbell, Walker, and Yang reported an - teresting phenomenon;the radial velocity variations of Cephei seemed to suggest the existence of a Jupiter-like planet around this star. This was a very exciting and, at the same time, very surprising discovery. It was exciting because if true, it would have marked the detection of the ?rst planet outside of our solar system. It was surprising because the planet-hosting star is the primary of a binary system with a separation less than 19 AU, a distance comparable to the planetary distances in our solar system. The moderatelyclose orbit of the stellar companionof Cephei raised questions about the reality of its planet. The skepticism over the interpretation of the results (which was primarily based on the idea that binary star systems with small sepa- tions would not be favorable places for planet formation) became so strong that in a subsequent paper in 1992, Walker and his colleagues suggested that the planet in the Cephei binary might not be real, and the variations in the radial velocity of this star might have been due to its chromospheric activities.

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1 Disks Around Young Binary Stars
2 Probing the Impact of Stellar Duplicity on Planet Occurrence with Spectroscopic and Imaging Observations
3 The Detection of Extrasolar Planets Using Precise Stellar Radial Velocities
4 Observational Techniques for Detecting Planets in Binary Systems
5 The SARG Planet Search
6 Early Evolution of Planets in Binaries PlanetDisk Interaction
7 Dynamics and Planet Formation inAround Binaries
8 Gravitational Instability in Binary Protoplanetary Disks
9 NBody Integrators for Planets in Binary Star Systems
10 Terrestrial Planet Formation in Binary Star Systems
11 Planetary Dynamics and Habitable Planet Formation in Binary Star Systems

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