Precision Asteroseismology Of The Pulsating White Dwarf Gd 1212 Using A Two-Wheel-Controlled Kepler Spacecraft

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dc.contributor.utaustinauthorWinget, D. E.en_US
dc.contributor.utaustinauthorMontgomery, Michael H.en_US
dc.creatorHermes, J. J.en_US
dc.creatorCharpinet, S.en_US
dc.creatorBarclay, Thomasen_US
dc.creatorPakstiene, E.en_US
dc.creatorMullally, Fergalen_US
dc.creatorKawaler, Steven D.en_US
dc.creatorBloemen, S.en_US
dc.creatorCastanheira, Barbara G.en_US
dc.creatorWinget, D. E.en_US
dc.creatorMontgomery, Michael H.en_US
dc.creatorVan Grootel, V.en_US
dc.creatorHuber, Danielen_US
dc.creatorStill, Martinen_US
dc.creatorHowell, Steve B.en_US
dc.creatorCaldwell, Douglas A.en_US
dc.creatorHaas, Michael R.en_US
dc.creatorBryson, Stephen T.en_US
dc.date.accessioned2016-04-28T19:33:28Z
dc.date.available2016-04-28T19:33:28Z
dc.date.issued2014-07en
dc.description.abstractWe present a preliminary analysis of the cool pulsating white dwarf (WD) GD 1212, enabled by more than 11.5 days of space-based photometry obtained during an engineering test of the two-reaction-wheel-controlled Kepler spacecraft. We detect at least 19 independent pulsation modes, ranging from 828.2-1220.8 s, and at least 17 nonlinear combination frequencies of those independent pulsations. Our longest uninterrupted light curve, 9.0 days in length, evidences coherent difference frequencies at periods inaccessible from the ground, up to 14.5 hr, the longest-period signals ever detected in a pulsating WD. These results mark some of the first science to come from a two-wheel-controlled Kepler spacecraft, proving the capability for unprecedented discoveries afforded by extending Kepler observations to the ecliptic.en_US
dc.description.departmentMcDonald Observatoryen_US
dc.description.sponsorshipEuropean Research Council under the European Union 320964en_US
dc.description.sponsorshipNSF AST-0909107, AST-1312678en_US
dc.description.sponsorshipNorman Hackerman Advanced Research Program 003658-0252-2009en_US
dc.description.sponsorshipNASA NNX12AC96G, NNX13AC23G, NNX14AB92Gen_US
dc.description.sponsorshipFoundation for Fundamental Research on Matter (FOM), Netherlands Organisation for Scientific Research (NWO)en_US
dc.identifierdoi:10.15781/T26N6R
dc.identifier.Filename2014_07_asteroseismology.pdfen_US
dc.identifier.citationHermes, J. J., St�phane Charpinet, Thomas Barclay, E. Pak�tien?, Fergal Mullally, Steven D. Kawaler, Steven Bloemen et al. "Precision asteroseismology of the pulsating white dwarf GD 1212 using a two-wheel-controlled Kepler spacecraft." The Astrophysical Journal, Vol. 789, No. 1 (Jul., 2014): 85.en_US
dc.identifier.doi10.1088/0004-637x/789/1/85en_US
dc.identifier.issn0004-637Xen_US
dc.identifier.urihttp://hdl.handle.net/2152/34732
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.subjectstars: evolutionen_US
dc.subjectstars: individual (gd 1212)en_US
dc.subjectstars: oscillationsen_US
dc.subject(including pulsations)en_US
dc.subjectstars: variables: generalen_US
dc.subjectwhite dwarfsen_US
dc.subjectwhole earth telescopeen_US
dc.subjectzz-ceti starsen_US
dc.subjectgravity modesen_US
dc.subjectlight-curveen_US
dc.subjectg29-38en_US
dc.subjectpg-1159-035en_US
dc.subjectinstabilityen_US
dc.subjectdiscoveryen_US
dc.subjectg226-29en_US
dc.subjectperioden_US
dc.subjectastronomy & astrophysicsen_US
dc.titlePrecision Asteroseismology Of The Pulsating White Dwarf Gd 1212 Using A Two-Wheel-Controlled Kepler Spacecraften_US
dc.typeArticleen_US

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