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Modeling of a Giant Exoring System Around the Substellar Companion J1407b

Published online by Cambridge University Press:  27 January 2016

Matthew A. Kenworthy  and
Eric E. Mamajek
Matthew A. Kenworthy
Affiliation:
Leiden Observatory, Leiden University, Niels Bohrweg 2, 2333 RA, Leiden, The Netherlands email: kenworthy@strw.leidenuniv.nl
Eric E. Mamajek
Affiliation:
University of Rochester email: emamajek@pas.rochester.edu
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Abstract

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We model the complex light curve of 1SWASP J140747.93-394542.6, a ~16 Myr old star in the Sco-Cen OB association, with a giant ring system that fills a significant fraction of the Hill sphere of an unseen secondary companion, J1407b. The best ring model has 37 rings and extends out to a radius of 0.6 AU (90 million km), and the rings have an estimated total mass on the order of 1 M⊕. The ring system has one clearly defined gap at 0.4 AU (61 million km), which we hypothesize is being cleared out by a < 0.8 M⊕ exosatellite orbiting around the secondary companion.

Keywords

techniques: photometricplanetary systems: formationplanets: rings
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Issue S314: Young Stars & Planets Near the Sun , November 2015 , pp. 171 - 174
Copyright
Copyright © International Astronomical Union 2016 

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