ATTENTION: The software behind KU ScholarWorks is being upgraded to a new version. Starting July 15th, users will not be able to log in to the system, add items, nor make any changes until the new version is in place at the end of July. Searching for articles and opening files will continue to work while the system is being updated. If you have any questions, please contact Marianne Reed at mreed@ku.edu .

Show simple item record

dc.contributor.authorQuin, Samuel N.
dc.contributor.authorCrossfield, Ian
dc.date.accessioned2020-12-23T20:24:04Z
dc.date.available2020-12-23T20:24:04Z
dc.date.issued2019-10-10
dc.identifier.citationSamuel N. Quinn et al 2019 AJ 158 177en_US
dc.identifier.urihttp://hdl.handle.net/1808/31007
dc.description.abstractWe report the Transiting Exoplanet Survey Satellite detection of a multi-planet system orbiting the V = 10.9 K0 dwarf TOI-125. We find evidence for up to five planets, with varying confidence. Three transit signals with high signal-to-noise ratio correspond to sub-Neptune-sized planets (2.76, 2.79, and 2.94 R ⊕), and we statistically validate the planetary nature of the two inner planets (P b = 4.65 days, P c = 9.15 days). With only two transits observed, we report the outer object (P .03 = 19.98 days) as a planet candidate with high signal-to-noise ratio. We also detect a candidate transiting super-Earth (1.4 R ⊕) with an orbital period of only 12.7 hr and a candidate Neptune-sized planet (4.2 R ⊕) with a period of 13.28 days, both at low signal-to-noise ratio. This system is amenable to mass determination via radial velocities and transit-timing variations, and provides an opportunity to study planets of similar size while controlling for age and environment. The ratio of orbital periods between TOI-125 b and c (P c /P b = 1.97) is slightly lower than an exact 2:1 commensurability and is atypical of multiple planet systems from Kepler, which show a preference for period ratios just wide of first-order period ratios. A dynamical analysis refines the allowed parameter space through stability arguments and suggests that despite the nearly commensurate periods, the system is unlikely to be in resonance.en_US
dc.publisherIOP Publishingen_US
dc.rights© 2019. The American Astronomical Society. All rights reserved.en_US
dc.subjectTransit photometryen_US
dc.subjectMini Neptunesen_US
dc.subjectSuper Earthsen_US
dc.subjectExoplanetsen_US
dc.titleNear-resonance in a System of Sub-Neptunes from TESSen_US
dc.typeArticleen_US
kusw.kuauthorCrossfield, Ian
kusw.kudepartmentPhysics and Astronomyen_US
dc.identifier.doi10.3847/1538-3881/ab3f2ben_US
dc.identifier.orcidhttps://orcid.org/0000-0002-8964-8377en_US
kusw.oaversionScholarly/refereed, publisher versionen_US
kusw.oapolicyThis item meets KU Open Access policy criteria.en_US
dc.rights.accessrightsopenAccessen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record