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Kepler-36: A Pair of Planets with Neighboring Orbits and Dissimilar Densities

Carter, Joshua A. and Howard, Andrew W. (2012) Kepler-36: A Pair of Planets with Neighboring Orbits and Dissimilar Densities. Science, 337 (6094). pp. 556-559. ISSN 0036-8075. https://resolver.caltech.edu/CaltechAUTHORS:20170621-141140697

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Abstract

In the solar system, the planets’ compositions vary with orbital distance, with rocky planets in close orbits and lower-density gas giants in wider orbits. The detection of close-in giant planets around other stars was the first clue that this pattern is not universal and that planets’ orbits can change substantially after their formation. Here, we report another violation of the orbit-composition pattern: two planets orbiting the same star with orbital distances differing by only 10% and densities differing by a factor of 8. One planet is likely a rocky “super-Earth,” whereas the other is more akin to Neptune. These planets are 20 times more closely spaced and have a larger density contrast than any adjacent pair of planets in the solar system.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1126/science.1223269DOIArticle
http://science.sciencemag.org/content/337/6094/556PublisherArticle
http://www.sciencemag.org/cgi/content/full/science.1223269/DC1PublisherSupplementary Materials
https://arxiv.org/abs/1206.4718arXivDiscussion Paper
ORCID:
AuthorORCID
Howard, Andrew W.0000-0001-8638-0320
Additional Information:© 2012 American Association for the Advancement of Science. Received 12 April 2012; accepted 11 June 2012; Published online 21 June 2012. NASA’s Science Mission Directorate provided funding for the Kepler Discovery mission. J.A.C. and D.C.F. acknowledge support by NASA through Hubble Fellowship grants HF-51267.01-A and HF-51272.01-A awarded by the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Incorporated, for NASA, under contract NAS 5-26555. E.A. acknowledges NSF Career grant AST-0645416 and thanks the Center for Astrophysics, where this work began. W.J.C., A.M., and Y.E. acknowledge the financial support of the UK Science and Technology Facilities Council (STFC). Funding for the Stellar Astrophysics Centre (SAC) is provided by the Danish National Research Foundation. The research is supported by the ASTERISK project (ASTERoseismic Investigations with SONG and Kepler) funded by the European Research Council (grant agreement no. 267864). S.H. acknowledges financial support from the Netherlands Organization for Scientific Research (NWO). Computational time on Kraken at the National Institute of Computational Sciences was provided through NSF TeraGrid allocation TG-AST090107. J.N.W. was supported by the NASA Kepler Participating Scientist program through grant NNX12AC76G. Refer to the supplementary materials for access information to data used in this work.
Funders:
Funding AgencyGrant Number
NASA Hubble FellowshipHF-51267.01-A
NASA Hubble FellowshipHF-51272.01-A
NASANAS 5-26555
NSFAST-0645416
Science and Technology Facilities Council (STFC)UNSPECIFIED
Danish National Research FoundationUNSPECIFIED
European Research Council (ERC)267864 ASTERISK
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
NSFTG-AST090107
NASANNX12AC76G
Issue or Number:6094
Record Number:CaltechAUTHORS:20170621-141140697
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20170621-141140697
Official Citation:Kepler-36: A Pair of Planets with Neighboring Orbits and Dissimilar Densities BY JOSHUA A. CARTER, ERIC AGOL, WILLIAM J. CHAPLIN, SARBANI BASU, TIMOTHY R. BEDDING, LARS A. BUCHHAVE, JØRGEN CHRISTENSEN-DALSGAARD, KATHERINE M. DECK, YVONNE ELSWORTH, DANIEL C. FABRYCKY, ERIC B. FORD, JONATHAN J. FORTNEY, STEVEN J. HALE, RASMUS HANDBERG, SASKIA HEKKER, MATTHEW J. HOLMAN, DANIEL HUBER, CHRISTOPHER KAROFF, STEVEN D. KAWALER, HANS KJELDSEN, JACK J. LISSAUER, ERIC D. LOPEZ, MIKKEL N. LUND, MIA LUNDKVIST, TRAVIS S. METCALFE, ANDREA MIGLIO, LESLIE A. ROGERS, DENNIS STELLO, WILLIAM J. BORUCKI, STEVE BRYSON, JESSIE L. CHRISTIANSEN, WILLIAM D. COCHRAN, JOHN C. GEARY, RONALD L. GILLILAND, MICHAEL R. HAAS, JENNIFER HALL, ANDREW W. HOWARD, JON M. JENKINS, TODD KLAUS, DAVID G. KOCH, DAVID W. LATHAM, PHILLIP J. MACQUEEN, DIMITAR SASSELOV, JASON H. STEFFEN, JOSEPH D. TWICKEN, JOSHUA N. WINN SCIENCE 03 AUG 2012 : 556-559
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:78424
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:21 Jun 2017 21:31
Last Modified:03 Oct 2019 18:08

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