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dc.contributor.authorGeier, S.
dc.contributor.authorSchaffenroth, V.
dc.contributor.authorDrechsel, H.
dc.contributor.authorHeber, U.
dc.contributor.authorKupfer, T.
dc.contributor.authorTillich, A.
dc.contributor.authorOstensen, R.
dc.contributor.authorSmolders, K.
dc.contributor.authorDegroote, P.
dc.contributor.authorMaxted, P.F.L.
dc.contributor.authorBarlow, B.N.
dc.contributor.authorGansicke, B.T.
dc.contributor.authorMarsh, T.R.
dc.contributor.authorNapiwotzki, R.
dc.date.accessioned2011-05-25T15:12:07Z
dc.date.available2011-05-25T15:12:07Z
dc.date.issued2011
dc.identifier.citationGeier , S , Schaffenroth , V , Drechsel , H , Heber , U , Kupfer , T , Tillich , A , Ostensen , R , Smolders , K , Degroote , P , Maxted , P F L , Barlow , B N , Gansicke , B T , Marsh , T R & Napiwotzki , R 2011 , ' Binaries discovered by the MUCHFUSS project SDSS J08205+0008 - An eclipsing subdwarf B binary with brown dwarf companion ' , The Astrophysical journal , vol. 731 , no. Part II . https://doi.org/10.1088/2041-8205/731/2/L22
dc.identifier.issn0004-637X
dc.identifier.otherPURE: 161948
dc.identifier.otherPURE UUID: 0daac75f-f4e1-482f-8aba-7401fa48e4cf
dc.identifier.otherdspace: 2299/5851
dc.identifier.otherScopus: 79955601734
dc.identifier.urihttp://hdl.handle.net/2299/5851
dc.description‘In these times, during the rise in the popularity of institutional repositories, the Society does not forbid authors from depositing their work in such repositories. However, the AAS regards the deposit of scholarly work in such repositories to be a decision of the individual scholar, as long as the individual's actions respect the diligence of the journals and their reviewers.’ Original article can be found at : http://iopscience.iop.org/ Copyright American Astronomical Society
dc.description.abstractHot subdwarf B stars (sdBs) are extreme horizontal branch stars believed to originate from close binary evolution. Indeed about half of the known sdB stars are found in close binaries with periods ranging from a few hours to a few days. The enormous mass loss required to remove the hydrogen envelope of the red-giant progenitor almost entirely can be explained by common envelope ejection. A rare subclass of these binaries are the eclipsing HW Vir binaries where the sdB is orbited by a dwarf M star. Here, we report the discovery of an HW Vir system in the course of the MUCHFUSS project. A most likely substellar object (≃0.068 M⊙) was found to orbit the hot subdwarf J08205+0008 with a period of 0.096 days. Since the eclipses are total, the system parameters are very well constrained. J08205+0008 has the lowest unambiguously measured companion mass yet found in a subdwarf B binary. This implies that the most likely substellar companion has not only survived the engulfment by the red-giant envelope, but also triggered its ejection and enabled the sdB star to form. The system provides evidence that brown dwarfs may indeed be able to significantly affect late stellar evolution.en
dc.language.isoeng
dc.relation.ispartofThe Astrophysical journal
dc.subjectbinaries : spectroscopic
dc.subjectbrown dwarfs
dc.subjectstars : horizontal-branch
dc.subjectstars : individual
dc.titleBinaries discovered by the MUCHFUSS project SDSS J08205+0008 - An eclipsing subdwarf B binary with brown dwarf companionen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
rioxxterms.versionofrecordhttps://doi.org/10.1088/2041-8205/731/2/L22
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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