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The Imprint of an Invisible Giant

14 Aug 2019, 10:00 UTC
The Imprint of an Invisible Giant
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Title: Giant planet effects on terrestrial planet formation and system architectureAuthors: Anna C. Childs, Elisa Quintana, Thomas Barclay, Jason H. Steffen
First Author’s Institution: Department of Physics and Astronomy, University of Nevada, Las Vegas
Status: [Open access on arXiv], Accepted for publication in MNRASWithout Jupiter, the solar system might be a vastly different place. Our largest planetary companion is thought to be responsible for everything from clearing out planet-building material near the sun to throwing Neptune and Uranus to the outer solar system to delivering water to the Earth. Given the crucial role that this behemoth played in shaping our solar system, a natural question to ask is how important gas giants are for building planets around other stars.Finding exo-Jupiters is hardUnfortunately, we can’t just look at stars with terrestrial planets and then determine which of those also have something resembling Jupiter. With the exception of a rather exotic and unexpected subclass of close-in giant planets known as hot Jupiters, most gas giants take far too long to orbit their host stars to be easily detectable. To illustrate this point, consider how an observer from outside the solar system would detect Jupiter. There are two ways to do this. The ...

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