2016ApJ...825...33K

Query : 2016ApJ...825...33K

2016ApJ...825...33K - Astrophys. J., 825, 33-33 (2016/July-1)

Making Planet Nine: pebble accretion at 250-750 AU in a gravitationally unstable ring.

KENYON S.J. and BROMLEY B.C.

Abstract (from CDS):

We investigate the formation of icy super-Earth mass planets within a gravitationally unstable ring of solids orbiting at 250-750 AU around a 1 {M}_☉ star. Coagulation calculations demonstrate that a system of a few large oligarchs and a swarm of pebbles generates a super-Earth within 100-200 Myr at 250 AU and within 1-2 Gyr at 750 AU. Systems with more than ten oligarchs fail to yield super-Earths over the age of the solar system. As these systems evolve, destructive collisions produce detectable debris disks with luminosities of {10}{–5}–{10}{-3} relative to the central star.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): planetary systems - planets and satellites: formation - planets and satellites: individual: Planet Nine - planets and satellites: physical evolution

Simbad objects: 6

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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 106906B BD* 12 17 52.61 -55 58 26.6           L2.5 115 0
2 HD 107146 PM* 12 19 06.5018840304 +16 32 53.867731128   7.61   6.7   G2V 307 0
3 RX J1609.5-2105 Or* 16 09 30.3075290712 -21 04 58.943800992   14.21 12.77 12.25 10.99 M0.0e 103 0
4 HD 202628 PM* 21 18 27.2696247000 -43 20 04.743062448   7.39 6.742     G5V 208 0
5 HD 207129 PM* 21 48 15.7511634187 -47 18 13.017893348   6.18 5.58     G2V 357 0
6 HD 218396 El* 23 07 28.7157209544 +21 08 03.310767492   6.21 5.953     F0+VkA5mA5 1285 0

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