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dc.contributor.authorRodriguez, Joseph E.
dc.contributor.authorEastman, Jason D.
dc.contributor.authorZhou, George
dc.contributor.authorQuinn, Samuel N.
dc.contributor.authorBeatty, Thomas G.
dc.contributor.authorPenev, Kaloyan
dc.contributor.authorJohnson, Marshall C.
dc.contributor.authorCargile, Phillip A.
dc.contributor.authorLatham, David W.
dc.contributor.authorBieryla, Allyson
dc.contributor.authorCollins, Karen A.
dc.contributor.authorDressing, Courtney D.
dc.contributor.authorCiardi, David R.
dc.contributor.authorRelles, Howard M.
dc.contributor.authorMurawski, Gabriel
dc.contributor.authorNishiumi, Taku
dc.contributor.authorYonehara, Atsunori
dc.contributor.authorIshimaru, Ryo
dc.contributor.authorYoshida, Fumi
dc.contributor.authorGregorio, Joao
dc.contributor.authorLund, Michael B.
dc.contributor.authorStevens, Daniel J.
dc.contributor.authorStassun, Keivan G.
dc.contributor.authorGaudi, B. Scott
dc.contributor.authorColón, Knicole D.
dc.contributor.authorPepper, Joshua
dc.contributor.authorNarita, Norio
dc.contributor.authorAwiphan, Supachai
dc.contributor.authorChuanraksasat, Pongpichit
dc.contributor.authorBenni, Paul
dc.contributor.authorZambelli, Roberto
dc.contributor.authorGarrison, Lehman H.
dc.contributor.authorWilson, Maurice L.
dc.contributor.authorCornachione, Matthew A.
dc.contributor.authorWang, Sharon X.
dc.contributor.authorLabadie-Bartz, Jonathan
dc.contributor.authorRodríguez, Romy
dc.contributor.authorSiverd, Robert J.
dc.contributor.authorYao, Xinyu
dc.contributor.authorBayliss, Daniel
dc.contributor.authorBerlind, Perry
dc.contributor.authorCalkins, Michael L.
dc.contributor.authorChristiansen, Jessie L.
dc.contributor.authorCohen, David H.
dc.contributor.authorConti, Dennis M.
dc.contributor.authorCurtis, Ivan A.
dc.contributor.authorDePoy, D. L.
dc.contributor.authorEsquerdo, Gilbert A.
dc.contributor.authorEvans, Phil
dc.contributor.authorFeliz, Dax
dc.contributor.authorFulton, Benjamin J.
dc.contributor.authorHoloien, Thomas W.-S.
dc.contributor.authorJames, David J.
dc.contributor.authorJayasinghe, Tharindu
dc.contributor.authorJang-Condell, Hannah
dc.contributor.authorJensen, Eric L. N.
dc.contributor.authorJohnson, John A.
dc.contributor.authorJoner, Michael D.
dc.contributor.authorKhakpash, Somayeh
dc.contributor.authorKielkopf, John F.
dc.contributor.authorKuhn, Rudolf B.
dc.contributor.authorManner, Mark
dc.contributor.authorMarshall, Jennifer L.
dc.contributor.authorMcLeod, Kim K.
dc.contributor.authorMcCrady, Nate
dc.contributor.authorOberst, Thomas E.
dc.contributor.authorOelkers, Ryan J.
dc.contributor.authorPenny, Matthew T.
dc.contributor.authorReed, Phillip A.
dc.contributor.authorSliski, David H.
dc.contributor.authorShappee, B. J.
dc.contributor.authorStephens, Denise C.
dc.contributor.authorStockdale, Chris
dc.contributor.authorTan, Thiam-Guan
dc.contributor.authorTrueblood, Mark
dc.contributor.authorTrueblood, Pat
dc.contributor.authorVillanueva, Steven
dc.contributor.authorWittenmyer, Robert A.
dc.contributor.authorWright, Jason T.
dc.date.accessioned2020-01-29T22:06:13Z
dc.date.available2020-01-29T22:06:13Z
dc.date.issued2019-10-23
dc.identifier.citationJoseph E. Rodriguez et al 2019 AJ 158 197en_US
dc.identifier.issn0004-6256
dc.identifier.doi10.3847/1538-3881/ab4136
dc.identifier.urihttp://hdl.handle.net/10150/636773
dc.description.abstractWe present the discovery of KELT-24 b, a massive hot Jupiter orbiting a bright (V = 8.3 mag, K = 7.2 mag) young F-star with a period of 5.6 days. The host star, KELT-24 (HD 93148), has a T-eff = 6509(-49)(+50) K, a mass of M-* = 1.460(-0.059)(+0.055) M-circle dot, a radius of R-* = 1.506 +/- 0.022 R-circle dot, and an age of 0.78(-0.42)(+0.61) Gyr. Its planetary companion (KELT-24 b) has a radius of R-P = 1.272 +/- 0.021 R-J and a mass of M-P = 5.18(-0.22)(+0.21) M-J, and from Doppler tomographic observations, we find that the planet's orbit is well-aligned to its host star's projected spin axis (lambda = 2.6(-3.6)(+5.1)). The young age estimated for KELT-24 suggests that it only recently started to evolve from the zero-age main sequence. KELT-24 is the brightest star known to host a transiting giant planet with a period between 5 and 10 days. Although the circularization timescale is much longer than the age of the system, we do not detect a large eccentricity or significant misalignment that is expected from dynamical migration. The brightness of its host star and its moderate surface gravity make KELT-24b an intriguing target for detailed atmospheric characterization through spectroscopic emission measurements since it would bridge the current literature results that have primarily focused on lower mass hot Jupiters and a few brown dwarfs.en_US
dc.description.sponsorshipHarvard Future Faculty Leaders Postdoctoral fellowship; Space Telescope Science InstituteSpace Telescope Science Institute [HST-HF2-51402.001-A]; Vanderbilt Office of the Provost through the Vanderbilt Initiative in Data-intensive Astrophysics; JSPS KAKENHIMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of ScienceGrants-in-Aid for Scientific Research (KAKENHI) [JP18H01265, JP18H05439]; JST PRESTO grant [JPMJPR1775]; FAPESPFundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [2017/23731-1]; NASANational Aeronautics & Space Administration (NASA) [80NSSC18K1009, NNX17AB94G, MT-13EPSCoR-0011, NAS 5-26555]; National Aeronautics and Space Administration (EPSCOR grant) [NNX13AM97A]; Australian Research Council (LIEF grant)Australian Research Council [LE140100050]; National Science FoundationNational Science Foundation (NSF) [1516242, 1608203]; Pennsylvania State University; Eberly College of Science; Pennsylvania Space Grant Consortium; Gordon and Betty Moore FoundationGordon and Betty Moore Foundation [GBMF5490]; NSFNational Science Foundation (NSF) [AST-1515927]; Mt. Cuba Astronomical Foundation; Center for Cosmology and AstroParticle Physics (CCAPP) at OSU; Chinese Academy of Sciences South America Center for Astronomy (CASSACA); Villum Fonden (Denmark)en_US
dc.language.isoenen_US
dc.publisherIOP PUBLISHING LTDen_US
dc.rightsCopyright © 2019. The American Astronomical Society. All rights reserved.en_US
dc.titleKELT-24b: A 5M J Planet on a 5.6 day Well-aligned Orbit around the Young V = 8.3 F-star HD 93148en_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Dept Astron & Steward Observen_US
dc.identifier.journalASTRONOMICAL JOURNALen_US
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en_US
dc.eprint.versionFinal published versionen_US
dc.source.volume158
dc.source.issue5
dc.source.beginpage197
refterms.dateFOA2020-01-29T22:06:13Z


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