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2013MNRAS.431.3444C - Mon. Not. R. Astron. Soc., 431, 3444-3455 (2013/June-1)
The minimum-mass extrasolar nebula: in situ formation of close-in super-Earths.
CHIANG E. and LAUGHLIN G.
Abstract (from CDS):
Close-in super-Earths, with radii R ~ 2-5R⊕ and orbital periods P < 100 d, orbit more than half, and perhaps nearly all, Sun-like stars in the Universe. We use this omnipresent population to construct the minimum-mass extrasolar nebula (MMEN), the circumstellar disc of solar-composition solids and gas from which such planets formed, if they formed near their current locations and did not migrate. In a series of back-of-the-envelope calculations, we demonstrate how in situ formation in the MMEN is fast, efficient, and can reproduce many of the observed properties of close-in super-Earths, including their gas-to-rock fractions. Testable predictions are discussed.
Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)
Journal keyword(s): planets and satellites: atmospheres - planets and satellites: composition - planets and satellites: formation - planets and satellites: general - protoplanetary discs
Simbad objects: 17
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