2016A&A...596A...9R


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.16CEST18:30:29

2016A&A...596A...9R - Astronomy and Astrophysics, volume 596A, 9-9 (2016/12-1)

Constraints on the size and dynamics of the J1407b ring system.

RIEDER S. and KENWORTHY M.A.

Abstract (from CDS):

Context. J1407 (1SWASP J140747.93-394542.6 in full) is a young star in the Scorpius-Centaurus OB association that underwent a series of complex eclipses over 56 days in 2007. To explain these, it was hypothesised that a secondary substellar companion, J1407b, has a giant ring system filling a large fraction of the Hill sphere, causing the eclipses. Observations have not successfully detected J1407b, but do rule out circular orbits for the companion around the primary star.
Aims. We test to what degree the ring model of J1407b could survive in an eccentric orbit required to fit the observations.
Methods. We run N-body simulations under the AMUSE framework to test the stability of Hill radius-filling systems where the companion is on an eccentric orbit.
Results. We strongly rule out prograde ring systems and find that a secondary of 60 to 100MJup with an 11yr orbital period and retrograde orbiting material can survive for at least 104 orbits and produce eclipses with similar durations as the observed one.

Abstract Copyright: © ESO, 2016

Journal keyword(s): planets and satellites: dynamical evolution and stability - planets and satellites: rings

Status at CDS:   Acronym for new objects described in the dictionary of nomenclature and being created in SIMBAD.

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 - 2020
#notes
1 NAME 1SWASP J140747.93-394542.6b Pl? 14 07 47.9296051120 -39 45 42.766332988           ~ 7 0
2 ASAS J140748-3945.7 pr* 14 07 47.9296051120 -39 45 42.766332988   13.56 12.31 11.91 10.92 K5IVe 50 0
3 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 557 0
4 CD-27 10695b Pl 15 59 50.9489706053 -28 03 42.309432433           ~ 196 1
5 NAME ASSOC II SCO As* 16 15 -24.2           ~ 1120 1
6 TYC 3162-665-1 * 20 06 15.4527143158 +44 27 24.791354432   12.82 12.01 11.75   F3V 87 0

    Equat.    Gal    SGal    Ecl

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2020.07.16-18:30:29

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