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Architecture of Kepler's Multi-transiting Systems. II. New Investigations with Twice as Many Candidates

Fabrycky, Daniel C. and Lissauer, Jack J. and Ragozzine, Darin and Rowe, Jason F. and Steffen, Jason H. and Agol, Eric and Barclay, Thomas and Batalha, Natalie and Borucki, William and Ciardi, David R. and Ford, Eric B. and Gautier, Thomas N. and Geary, John C. and Holman, Matthew J. and Jenkins, Jon M. and Li, Jie and Morehead, Robert C. and Morris, Robert L. and Shporer, Avi and Smith, Jeffrey C. and Still, Martin and van Cleve, Jeffrey (2014) Architecture of Kepler's Multi-transiting Systems. II. New Investigations with Twice as Many Candidates. Astrophysical Journal, 790 (2). Art. No. 146. ISSN 0004-637X. doi:10.1088/0004-637X/790/2/146.

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We report on the orbital architectures of Kepler systems having multiple-planet candidates identified in the analysis of data from the first six quarters of Kepler data and reported by Batalha et al. (2013). These data show 899 transiting planet candidates in 365 multiple-planet systems and provide a powerful means to study the statistical properties of planetary systems. Using a generic mass–radius relationship, we find that only two pairs of planets in these candidate systems (out of 761 pairs total) appear to be on Hill-unstable orbits, indicating ~96% of the candidate planetary systems are correctly interpreted as true systems. We find that planet pairs show little statistical preference to be near mean-motion resonances. We identify an asymmetry in the distribution of period ratios near first-order resonances (e.g., 2:1, 3:2), with an excess of planet pairs lying wide of resonance and relatively few lying narrow of resonance. Finally, based upon the transit duration ratios of adjacent planets in each system, we find that the interior planet tends to have a smaller transit impact parameter than the exterior planet does. This finding suggests that the mode of the mutual inclinations of planetary orbital planes is in the range 1°.0–2°.2, for the packed systems of small planets probed by these observations.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Fabrycky, Daniel C.0000-0003-3750-0183
Lissauer, Jack J.0000-0001-6513-1659
Rowe, Jason F.0000-0002-5904-1865
Agol, Eric0000-0002-0802-9145
Barclay, Thomas0000-0001-7139-2724
Ciardi, David R.0000-0002-5741-3047
Ford, Eric B.0000-0001-6545-639X
Holman, Matthew J.0000-0002-1139-4880
Jenkins, Jon M.0000-0002-4715-9460
Li, Jie0000-0002-3733-4587
Shporer, Avi0000-0002-1836-3120
Additional Information:© 2014 The American Astronomical Society. Received 2012 February 28; accepted 2014 June 9; published 2014 July 16. Funding for this mission is provided by NASA’s Science Mission Directorate. We thank the entire Kepler team for the many years of work that is making the Kepler mission so successful. We thank Emily Fabrycky, Doug Lin, Man-Hoi Lee, Scott Tremaine, and TseviMazeh for helpful conversations and insightful comments. D.C.F. acknowledges support for this work was provided by NASA through Hubble Fellowship grant No. HF-51272.01-A awarded by the Space Telescope Science Institute,which is operated by the Association of Universities for Research in Astronomy, Inc., for NASA, under contract NAS 5-26555. E.A.was supported byNSF Career grant 0645416. E.B.F acknowledges support by the National Aeronautics and Space Administration under grant NNX08AR04G issued through the Kepler Participating Scientist Program, and the Center for Exoplanets and Habitable Worlds, which is supported by the Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium. This material is based upon work supported by the National Science Foundation under grant No. 0707203. R.C.M. was support by the National Science Foundation Graduate Research Fellowship under grant No. DGE-0802270. Facilities: Kepler
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
NASA Hubble FellowshipHF-51272.01-A
NASANAS 5-26555
NSF Graduate Research FellowshipDGE-0802270
Subject Keywords:methods: statistical; planetary systems; planets and satellites: detection; planets and satellites: dynamical evolution and stability
Issue or Number:2
Record Number:CaltechAUTHORS:20140815-092737225
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Official Citation:Architecture of Kepler's Multi-transiting Systems. II. New Investigations with Twice as Many Candidates Daniel C. Fabrycky et al. 2014 ApJ 790 146
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48599
Deposited By: Jason Perez
Deposited On:15 Aug 2014 17:17
Last Modified:10 Nov 2021 18:33

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