"On the reality of the suggested planet in the ν Octantis System" is already available online. In the paper, the two scientists explore the possible existence of a proposed planet in a binary star system 69 light years, or 400 trillion miles, from Earth.
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Based on six years of data, observers have suggested a planet may exist in the ν Octantis system, a star system visible only from the southern half of the globe, particularly from Antarctica.
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They concluded there is a significant chance that the planet is indeed able to exist but in a retrograde orbit.
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"If our theoretical studies turn out to be applicable to the ν Octantis system, they will provide evidence for the first case of a planet in a retrograde orbit in a stellar binary system," said Manfred.
.. Yet even more diversity unfolding out there in Exoplanet territory.
They've found a number of planets in retrograde orbits about their parent stars....mostly Hot Jupiters. They're still trying to figure out why they're in these orbits but they have a number of reasonably sound ideas.
I think they're saying this one is unique because:
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Surprisingly, the planet of the system seemed to be outside of the commonly accepted zone where such an orbit could exist without disruption from the gravitational force of the second star in the binary system
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Such an orbit is previously unheard of for a planet in an extrasolar planetary system (???), but this type of orbit occurs for some moons of planets in our Solar System.
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Manfred and Eberle's study says there is still a slim chance that the suggested planet is in a prograde orbit, traveling in the same direction as the primary star's partner star. This is highly unlikely, as it would require detailed assumptions concerning the orbital parameters of the planet.
(I like the last bit ...chuckle, chuckle) ... Perhaps its all about being a binary system. Are the exos you mention in binary systems and outside the grav. influence of the second star ?
