Kepler-424 B: A "Lonely" Hot Jupiter That Found A Companion

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dc.contributor.utaustinauthorEndl, Michaelen_US
dc.creatorEndl, Michaelen_US
dc.creatorCaldwell, Douglas A.en_US
dc.creatorBarclay, Thomasen_US
dc.creatorHuber, Danielen_US
dc.creatorIsaacson, Howarden_US
dc.creatorBuchhave, Lars A.en_US
dc.creatorBrugamyer, Eriken_US
dc.creatorRobertson, Paulen_US
dc.creatorCochran, William D.en_US
dc.creatorMacQueen, Phillip J.en_US
dc.creatorHavel, Mathieuen_US
dc.creatorLucas, Phillipen_US
dc.creatorHowell, Steve B.en_US
dc.creatorFischer, Debraen_US
dc.creatorQuintana, Elisaen_US
dc.creatorCiardi, David R.en_US
dc.date.accessioned2016-04-28T19:36:31Z
dc.date.available2016-04-28T19:36:31Z
dc.date.issued2014-11en
dc.description.abstractHot Jupiter systems provide unique observational constraints for migration models in multiple systems and binaries. We report on the discovery of the Kepler-424 (KOI-214) two-planet system, which consists of a transiting hot Jupiter (Kepler-424b) in a 3.31 day orbit accompanied by a more massive outer companion in an eccentric (e = 0.3) 223 day orbit. The outer giant planet, Kepler-424c, is not detected transiting the host star. The masses of both planets and the orbital parameters for the second planet were determined using precise radial velocity (RV) measurements from the Hobby-Eberly Telescope (HET) and its High Resolution Spectrograph (HRS). In stark contrast to smaller planets, hot Jupiters are predominantly found to be lacking any nearby additional planets; they appear to be "lonely". This might be a consequence of these systems having a highly dynamical past. The Kepler-424 planetary system has a hot Jupiter in a multiple system, similar to. Andromedae. We also present our results for Kepler-422 (KOI-22), Kepler-77 (KOI-127), Kepler-43 (KOI-135), and Kepler-423 (KOI-183). These results are based on spectroscopic data collected with the Nordic Optical Telescope (NOT), the Keck 1 telescope, and HET. For all systems, we rule out false positives based on various follow-up observations, confirming the planetary nature of these companions. We performed a comparison with planetary evolutionary models which indicate that these five hot Jupiters have heavy element contents between 20 and 120 M-circle plus.en_US
dc.description.departmentMcDonald Observatoryen_US
dc.description.sponsorshipNASA NNX14AB86G (ME), NNX14AB92G (DH)en_US
dc.identifierdoi:10.15781/T2J815
dc.identifier.Filename2014_11_kepler424b.pdfen_US
dc.identifier.citationEndl, Michael, Douglas A. Caldwell, Thomas Barclay, Daniel Huber, Howard Isaacson, Lars A. Buchhave, Erik Brugamyer et al. "Kepler-424 b: A." The Astrophysical Journal, Vol. 795, No. 2 (Nov., 2014): 151.en_US
dc.identifier.doi10.1088/0004-637x/795/2/151en_US
dc.identifier.issn0004-637Xen_US
dc.identifier.urihttp://hdl.handle.net/2152/34892
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.relation.ispartofserialAstrophysical Journalen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.rights.restrictionOpenen_US
dc.subjectplanetary systemsen_US
dc.subjectstars: individual ( koi-22, koi-127, koi-135,en_US
dc.subjectkoi-183, koi-214, kepler-43, kepler-77)en_US
dc.subjecttechniques: radial velocitiesen_US
dc.subjecthobby-eberly telescopeen_US
dc.subjecttransiting extrasolar planetsen_US
dc.subjectgiant planetsen_US
dc.subjecthost starsen_US
dc.subjectcandidatesen_US
dc.subjectevolutionen_US
dc.subjectmissionen_US
dc.subjectexoplanetsen_US
dc.subjecti.en_US
dc.subjectperturbationsen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleKepler-424 B: A "Lonely" Hot Jupiter That Found A Companionen_US
dc.typeArticleen_US

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