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dc.contributor.authorCampante, Tiago L.
dc.contributor.authorBarclay, Thomas
dc.contributor.authorSwift, Jonathan J.
dc.contributor.authorHuber, Daniel F.
dc.contributor.authorAdibekyan, Vardan Zh
dc.contributor.authorCochran, William D.
dc.contributor.authorBurke, Christopher J.
dc.contributor.authorIsaacson, Howard T.
dc.contributor.authorQuintana, Elisa V.
dc.contributor.authorRagozzine, Darin A.
dc.date.accessioned2017-11-01T19:20:36Z
dc.date.available2017-11-01T19:20:36Z
dc.date.issued2015-09-23
dc.identifier.citationCampante, T.L., Barclay, T., Swift, J.J., Huber, D., Adibekyan, V.Zh., Cochran, W., Burke, C.J., Isaacson, H., Quintana, E.V., Davies, G.R., Silva Aguirre, V., Ragozzine, D., Riddle, R., Baranec, C., Basu, S., Chaplin, W.J., Christensen-Dalsgaard, J., Metcalfe, T.S., Bedding, T.R., Handberg, R., Stello, D., Brewer, J.M., Hekker, S., Karoff, C., Kolbl, R., Law, N.M., Lundkvist, M., Miglio, A., Rowe, J.F., Santos, N.C., Van Laerhoven, C., Arentoft, T., Elsworth, Y.P., Fischer, D.A., Kawaler, S.D., Kjeldsen, H., Lund, M.N., Marcy, G.W., Sousa, S.G., Sozzetti, A., White, T.R. KOI-3158: The oldest known system of terrestrial-size planets (2015) EPJ Web of Conferences, 101, art. no. 02004, . Cited 1 time.en_US
dc.identifier.urihttp://hdl.handle.net/11141/2170
dc.descriptionexoplanets, metal-rich stars,en_US
dc.description.abstractThe first discoveries of exoplanets around Sun-like stars have fueled efforts to find ever smaller worlds evocative of Earth and other terrestrial planets in the Solar System. While gas-giant planets appear to form preferentially around metal-rich stars, small planets (with radii less than four Earth radii) can form under a wide range of metallicities. This implies that small, including Earth-size, planets may have readily formed at earlier epochs in the Universe's history when metals were far less abundant. We report Kepler spacecraft observations of KOI-3158, a metal-poor Sun-like star from the old population of the Galactic thick disk, which hosts five planets with sizes between Mercury and Venus. We used asteroseismology to directly measure a precise age of 11.2 ± 1.0 Gyr for the host star, indicating that KOI-3158 formed when the Universe was less than 20 % of its current age and making it the oldest known system of terrestrial-size planets. We thus show that Earth-size planets have formed throughout most of the Universe's 13.8-billion-year history, providing scope for the existence of ancient life in the Galaxy. © Owned by the authors, published by EDP Sciences, 2015.en_US
dc.language.isoen_USen_US
dc.rights© Owned by the authors, published by EDP Sciences, 2015en_US
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en_US
dc.titleKOI-3158: The oldest known system of terrestrial-size planetsen_US
dc.typeArticleen_US
dc.identifier.doi10.1051/epjconf/201510102004


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© Owned by the authors, published by EDP Sciences, 2015
Except where otherwise noted, this item's license is described as © Owned by the authors, published by EDP Sciences, 2015