{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2023,9,13]],"date-time":"2023-09-13T08:40:12Z","timestamp":1694594412757},"reference-count":19,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2012,12,19]],"date-time":"2012-12-19T00:00:00Z","timestamp":1355875200000},"content-version":"vor","delay-in-days":18,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Astron Nachr"],"published-print":{"date-parts":[[2012,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>White dwarfs correspond to the final stages of stellar evolution of solar\u2010type stars. In these objects, production of energy by nuclear burning has ended which means that a white dwarf simply cools down over the course of the next billion years. It is now known that white dwarfs spend some of their cooling history in an instability strip. The pulsating white dwarfs with an hydrogen atmosphere (called DAV or ZZ Ceti stars) show non\u2010radial oscillation modes with periods in the range 100\u20131200 s. In this work we try to illustrate how the oscillation p\u2010mode frequencies of idealized white dwarf models change as the result of a different chemical composition in the core, with the ultimate goal of determining the chemical stratification from seismic observations. The presence of acoustic glitches in the internal structure results in a periodic signal in the frequencies. We find that this signal depends on the chemical stratification\/composition of the core in a form that can be analytically modelled (\u00a9 2012 WILEY\u2010VCH Verlag GmbH &amp; Co. KGaA, Weinheim)<\/jats:p>","DOI":"10.1002\/asna.201211830","type":"journal-article","created":{"date-parts":[[2014,10,15]],"date-time":"2014-10-15T14:35:04Z","timestamp":1413383704000},"page":"954-957","source":"Crossref","is-referenced-by-count":0,"title":["On the possibility of using seismic probes to study the core composition in pulsating white dwarfs"],"prefix":"10.1002","volume":"333","author":[{"given":"J.P.","family":"Faria","sequence":"first","affiliation":[]},{"given":"M.J.P.F.G.","family":"Monteiro","sequence":"additional","affiliation":[]}],"member":"311","published-online":{"date-parts":[[2012,12,19]]},"reference":[{"key":"e_1_2_1_2_1","doi-asserted-by":"crossref","first-page":"471","DOI":"10.1007\/s00159-010-0033-1","volume":"18","author":"Althaus L.G.","year":"2010","journal-title":"A&AR"},{"key":"e_1_2_1_3_1","doi-asserted-by":"publisher","DOI":"10.1086\/174456"},{"key":"e_1_2_1_4_1","first-page":"283","volume":"276","author":"Christensen\u2010Dalsgaard J.","year":"1995","journal-title":"MNRAS"},{"key":"e_1_2_1_5_1","doi-asserted-by":"crossref","first-page":"A42","DOI":"10.1051\/0004-6361\/201118736","volume":"541","author":"C\u00f3rsico A.H.","year":"2012","journal-title":"A&A"},{"key":"e_1_2_1_6_1","doi-asserted-by":"publisher","DOI":"10.1086\/147195"},{"key":"e_1_2_1_7_1","doi-asserted-by":"publisher","DOI":"10.1086\/149645"},{"key":"e_1_2_1_8_1","unstructured":"Marigo P.:2012 in: A. 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