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dc.contributor.authorProvencal, Judith L.pt_BR
dc.contributor.authorMontgomery, Michael Houstonpt_BR
dc.contributor.authorKanaan Neto, Antonio Nemerpt_BR
dc.contributor.authorThompson, S. E.pt_BR
dc.contributor.authorDalessio, J.pt_BR
dc.contributor.authorShipman, Harry L.pt_BR
dc.contributor.authorChilders, D.pt_BR
dc.contributor.authorClemens, J. Christopherpt_BR
dc.contributor.authorRosen, Rachelpt_BR
dc.contributor.authorHenrique, P.pt_BR
dc.contributor.authorBischoff-Kim, Agnèspt_BR
dc.contributor.authorStrickland, Williept_BR
dc.contributor.authorChandler, Dean W.pt_BR
dc.contributor.authorWalter, B.pt_BR
dc.contributor.authorWatson, Todd K.pt_BR
dc.contributor.authorCastanheira, Bárbara Garciapt_BR
dc.contributor.authorWang, Siqiupt_BR
dc.contributor.authorHandler, Geraldpt_BR
dc.contributor.authorWood, Matthew A.pt_BR
dc.contributor.authorVennes, S.pt_BR
dc.contributor.authorNemeth, Peterpt_BR
dc.contributor.authorKepler, Souza Oliveirapt_BR
dc.contributor.authorReed, M. D.pt_BR
dc.contributor.authorNitta, Atsukopt_BR
dc.contributor.authorKleinman, Scot Jamespt_BR
dc.contributor.authorBrown, Timpt_BR
dc.contributor.authorKim, Seung-Leept_BR
dc.contributor.authorSullivan, Denis J.pt_BR
dc.contributor.authorChen, Wen-Pingpt_BR
dc.contributor.authorYang, M.pt_BR
dc.contributor.authorShih, Chia-Youpt_BR
dc.contributor.authorJiang, Xiaojunpt_BR
dc.contributor.authorSergeev, A.pt_BR
dc.contributor.authorMaksim, A.pt_BR
dc.contributor.authorJanulis, Rimvydaspt_BR
dc.contributor.authorBaliyan, Kiran S.pt_BR
dc.contributor.authorVats, Hari Ompt_BR
dc.contributor.authorZola, Staszekpt_BR
dc.contributor.authorBaran, Andrzejpt_BR
dc.contributor.authorWiniarski, M.pt_BR
dc.contributor.authorOgloza, Waldemarpt_BR
dc.contributor.authorPaparo, Margitpt_BR
dc.contributor.authorBaran, Andrzejpt_BR
dc.contributor.authorBognár, Zsófiapt_BR
dc.contributor.authorPapics, P.pt_BR
dc.contributor.authorKilkenny, Davept_BR
dc.contributor.authorSefako, R.pt_BR
dc.contributor.authorBuckley, David A.H.pt_BR
dc.contributor.authorLoaring, N.pt_BR
dc.contributor.authorKniazev, A.pt_BR
dc.contributor.authorSilvotti, Robertopt_BR
dc.contributor.authorGalleti, S.pt_BR
dc.contributor.authorNagel, Thorstenpt_BR
dc.contributor.authorVauclair, Gérardpt_BR
dc.contributor.authorDolez, Noëlpt_BR
dc.contributor.authorFremy, J. R.pt_BR
dc.contributor.authorGonzalez Perez, Jose Miguelpt_BR
dc.contributor.authorAlmenara, J. M.pt_BR
dc.contributor.authorFraga, Lucianopt_BR
dc.date.accessioned2015-01-20T02:15:29Zpt_BR
dc.date.issued2012pt_BR
dc.identifier.issn0004-637Xpt_BR
dc.identifier.urihttp://hdl.handle.net/10183/109079pt_BR
dc.description.abstractWe report on an analysis of 308.3 hr of high-speed photometry targeting the pulsating DA white dwarf EC14012-1446. The datawere acquiredwith theWhole Earth Telescope during the 2008 international observing run XCOV26. The Fourier transform of the light curve contains 19 independent frequencies and numerous combination frequencies. The dominant peaks are 1633.907, 1887.404, and 2504.897μHz. Our analysis of the combination amplitudes reveals that the parent frequencies are consistent with modes of spherical degree l=1. The combination amplitudes also provide m identifications for the largest amplitude parent frequencies. Our seismology analysis, which includes 2004–2007 archival data, confirms these identifications, provides constraints on additional frequencies, and finds an average period spacing of 41 s. Building on this foundation, we present nonlinear fits to high signal-to-noise light curves from the SOAR 4.1 m, McDonald 2.1 m, and KPNO 2 m telescopes. The fits indicate a time-averaged convective response timescale of τ0 = 99.4 ± 17 s, a temperature exponent N = 85±6.2, and an inclination angle of θi = 32. ◦ 9 ± 3° 2. We present our current empirical map of the convective response timescale across the DA instability strip.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofThe astrophysical journal. Bristol. Vol. 751, no. 2 (June 2012), 91, 19 p.pt_BR
dc.rightsOpen Accessen
dc.subjectAsteroseismologyen
dc.subjectAnãs brancaspt_BR
dc.subjectEvolucao estelarpt_BR
dc.subjectAtars: evolutionen
dc.subjectFotometria estelarpt_BR
dc.subjectStars: individual (EC14012-1446)en
dc.subjectPulsacoes estelarespt_BR
dc.subjectStars: oscillationsen
dc.subjectWhite dwarfsen
dc.titleEmpirical determination of convection parameters in white dwarfs. I. Whole earth telescope obsevations of EC14012-1446pt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000869351pt_BR
dc.type.originEstrangeiropt_BR


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