On the relative sizes of planets within kepler multiple-candidate systems

Ciardi, David R. and Fabrycky, Daniel C. and Ford, Eric B. and Gautier, T. N. and Howell, Steve B. and Lissauer, Jack J. and Ragozzine, Darin and Rowe, Jason F. (2013) On the relative sizes of planets within kepler multiple-candidate systems. The Astrophysical Journal, 763 (1). pp. 41-52. ISSN 0004-637X

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We present a study of the relative sizes of planets within the multiple-candidate systems discovered with the Kepler mission. We have compared the size of each planet to the size of every other planet within a given planetary system after correcting the sample for detection and geometric biases. We find that for planet pairs for which one or both objects are approximately Neptune-sized or larger, the larger planet is most often the planet with the longer period. No such size-location correlation is seen for pairs of planets when both planets are smaller than Neptune. Specifically, if at least one planet in a planet pair has a radius of ≳ 3 R⊕, 68% ± 6% of the planet pairs have the inner planet smaller than the outer planet, while no preferred sequential ordering of the planets is observed if both planets in a pair are smaller than ≲ 3 R⊕.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Access to published version in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: No Faculty
Faculty/School / Institute/Centre: No Faculty
Date Deposited: 02 Jun 2017 07:45
Last Modified: 27 Jun 2017 00:59
Uncontrolled Keywords: planetary systems; Kepler multiple-candidate systems; planet pairs
Fields of Research (2008): 02 Physical Sciences > 0201 Astronomical and Space Sciences > 020110 Stellar Astronomy and Planetary Systems
Fields of Research (2020): 51 PHYSICAL SCIENCES > 5101 Astronomical sciences > 510109 Stellar astronomy and planetary systems
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970102 Expanding Knowledge in the Physical Sciences
Identification Number or DOI: https://doi.org/10.1088/0004-637X/763/1/41
URI: http://eprints.usq.edu.au/id/eprint/32133

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