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dc.contributor.authorGeier, S.
dc.contributor.authorMaxted, P.F.L.
dc.contributor.authorNapiwotzki, R.
dc.contributor.authorOstensen, R.
dc.contributor.authorHeber, U.
dc.contributor.authorHirsch, H.
dc.contributor.authorKupfer, T.
dc.contributor.authorMuller, S.
dc.contributor.authorTillich, A.
dc.contributor.authorBarlow, B.N.
dc.contributor.authorOreiro, R.
dc.contributor.authorOttosen, T.A.
dc.contributor.authorCopperwheat, C.
dc.contributor.authorGansicke, B.T.
dc.contributor.authorMarsh, T.R.
dc.date.accessioned2011-01-24T12:16:23Z
dc.date.available2011-01-24T12:16:23Z
dc.date.issued2011
dc.identifier.citationGeier , S , Maxted , P F L , Napiwotzki , R , Ostensen , R , Heber , U , Hirsch , H , Kupfer , T , Muller , S , Tillich , A , Barlow , B N , Oreiro , R , Ottosen , T A , Copperwheat , C , Gansicke , B T & Marsh , T R 2011 , ' Massive unseen companions to hot faint underluminous stars from SDSS (MUCHFUSS) - Analysis of seven close subdwarf B binaries ' , Astronomy and Astrophysics , vol. 526 , no. 5 . https://doi.org/10.1051/0004-6361/201015794
dc.identifier.issn0004-6361
dc.identifier.otherPURE: 181426
dc.identifier.otherPURE UUID: 60cdaa5d-a028-4d23-ae4d-e8962cbd6f7b
dc.identifier.otherdspace: 2299/5214
dc.identifier.otherScopus: 78650317803
dc.identifier.urihttp://hdl.handle.net/2299/5214
dc.descriptionOriginal article can be found at: http://www.aanda.org/ Copyright The European Southern Observatory
dc.description.abstractThe project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS (MUCHFUSS) aims at finding hot subdwarf stars with massive compact companions like massive white dwarfs (M > 1.0 ), neutron stars or stellar mass black holes. The existence of such systems is predicted by binary evolution theory and recent discoveries indicate that they exist in our Galaxy. First results are presented for seven close binary sdBs with short orbital periods ranging from 0.21 d to 1.5 d. The atmospheric parameters of all objects are compatible with core helium-burning stars. The companions are most likely white dwarfs. In one case the companion could be shown to be a white dwarf by the absence of light-curve variations. However, in most cases late type main sequence stars cannot be firmly excluded. Comparing our small sample with the known population of close sdB binaries we show that our target selection method aiming at massive companions is efficient. The minimum companion masses of all binaries in our sample are high compared to the reference sample of known sdB binaries.en
dc.language.isoeng
dc.relation.ispartofAstronomy and Astrophysics
dc.rightsOpen
dc.subjectSubdwarfs
dc.subjectbinaries: spectroscopic
dc.subjectbinaries: close
dc.subjectwhite dwarfs
dc.titleMassive unseen companions to hot faint underluminous stars from SDSS (MUCHFUSS) - Analysis of seven close subdwarf B binariesen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
dc.relation.schoolSchool of Physics, Astronomy and Mathematics
dcterms.dateAccepted2011
rioxxterms.versionofrecordhttps://doi.org/10.1051/0004-6361/201015794
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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