Kepler-15B: A Hot Jupiter Enriched in Heavy Elements and the First Kepler Mission Planet Confirmed With the Hobby-Eberly Telescope

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dc.contributor.utaustinauthorEndl, Michaelen_US
dc.contributor.utaustinauthorMacQueen, Phillip J.en_US
dc.contributor.utaustinauthorCochran, William D.en_US
dc.contributor.utaustinauthorBrugamyer, Erik J.en_US
dc.creatorEndl, Michaelen_US
dc.creatorMacQueen, Phillip J.en_US
dc.creatorCochran, William D.en_US
dc.creatorBrugamyer, Erik J.en_US
dc.creatorBuchhave, Lars A.en_US
dc.creatorRowe, Jasonen_US
dc.creatorLucas, Phillipen_US
dc.creatorIsaacson, Howarden_US
dc.creatorBryson, Steveen_US
dc.creatorHowell, Steve B.en_US
dc.creatorFortney, Jonathan J.en_US
dc.creatorHansen, Tereseen_US
dc.creatorBorucki, William J.en_US
dc.creatorCaldwell, Douglasen_US
dc.creatorChristiansen, Jessie L.en_US
dc.creatorCiardi, David R.en_US
dc.creatorDemory, Brice-Olivieren_US
dc.creatorEverett, Marken_US
dc.creatorFord, Eric B.en_US
dc.creatorHaas, Michael R.en_US
dc.creatorHolman, Matthew J.en_US
dc.creatorHorch, Elliotten_US
dc.creatorJenkins, Jon M.en_US
dc.creatorKoch, David J.en_US
dc.creatorLissauer, Jack J.en_US
dc.creatorMachalek, Pavelen_US
dc.creatorStill, Martinen_US
dc.creatorWelsh, William F.en_US
dc.creatorSanderfer, Dwight T.en_US
dc.creatorSeader, Shawn E.en_US
dc.creatorSmith, Jeffrey C.en_US
dc.creatorThompson, Susan E.en_US
dc.creatorTwicken, Joseph D.en_US
dc.date.accessioned2016-10-28T19:34:26Z
dc.date.available2016-10-28T19:34:26Z
dc.date.issued2011-11en_US
dc.description.abstractWe report the discovery of Kepler-15b (KOI-128), a new transiting exoplanet detected by NASA's Kepler mission. The transit signal with a period of 4.94 days was detected in the quarter 1 (Q1) Kepler photometry. For the first time, we have used the High Resolution Spectrograph (HRS) at the Hobby-Eberly Telescope (HET) to determine the mass of a Kepler planet via precise radial velocity (RV) measurements. The 24 HET/HRS RVs and 6 additional measurements from the Fibre-fed Echelle Spectrograph spectrograph at the Nordic Optical Telescope reveal a Doppler signal with the same period and phase as the transit ephemeris. We used one HET/HRS spectrum of Kepler-15 taken without the iodine cell to determine accurate stellar parameters. The host star is a metal-rich ([Fe/H] = 0.36 +/- 0.07) G-type main-sequence star with T-eff = 5515 +/- 124 K. The semi-amplitude K of the RV orbit is 78.7(-9.5)(+ 8.5) m s(-1), which yields a planet mass of 0.66 +/- 0.1 M-Jup. The planet has a radius of 0.96 +/- 0.06 R-Jup and a mean bulk density of 0.9 +/- 0.2 g cm(-3). The radius of Kepler-15b is smaller than the majority of transiting planets with similar mass and irradiation level. This suggests that the planet is more enriched in heavy elements than most other transiting giant planets. For Kepler-15b we estimate a heavy element mass of 30-40 M-circle plus.en_US
dc.description.departmentMcDonald Observatoryen_US
dc.description.sponsorshipNASA's Science Mission Directorateen_US
dc.identifierdoi:10.15781/T2FN10V5N
dc.identifier.citationEndl, Michael, Phillip J. MacQueen, William D. Cochran, Erik J. Brugamyer, Lars A. Buchhave, Jason Rowe, Phillip Lucas et al. "Kepler-15b: A hot Jupiter enriched in heavy elements and the first Kepler Mission planet confirmed with the Hobby-Eberly telescope." The Astrophysical Journal Supplement Series, Vol. 197, No. 1 (Nov., 2011): 13.en_US
dc.identifier.doi10.1088/0067-0049/197/1/13en_US
dc.identifier.issn0067-0049en_US
dc.identifier.urihttp://hdl.handle.net/2152/42925
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.relation.ispartofserialAstrophysical Journal Supplement Seriesen_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 (kepler-15, koi-128, kic 11359879,en_US
dc.subject2mass j19444814+4908244)en_US
dc.subjecttechniques: image processingen_US
dc.subjecttechniques:en_US
dc.subjectphotometricen_US
dc.subjecttechniques: radial velocitiesen_US
dc.subjecttechniques: spectroscopicen_US
dc.subjecttransiting-planeten_US
dc.subjectlight curvesen_US
dc.subjectspaced dataen_US
dc.subjectstarsen_US
dc.subjectspectrometeren_US
dc.subjectperformanceen_US
dc.subjectevolutionen_US
dc.subjectdiscoveryen_US
dc.subjectprogramen_US
dc.subjectscienceen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleKepler-15B: A Hot Jupiter Enriched in Heavy Elements and the First Kepler Mission Planet Confirmed With the Hobby-Eberly Telescopeen_US
dc.typeArticleen_US

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