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dc.contributor.authorMiszalski, B.
dc.contributor.authorMikolajewska, J.
dc.contributor.authorKoppen, K.
dc.contributor.authorRauch, T.
dc.contributor.authorAcker, A.
dc.contributor.authorCohen, M.
dc.contributor.authorFrew, D.J.
dc.contributor.authorMoffat, A.F.J.
dc.contributor.authorParker, Q.A.
dc.contributor.authorJones, A.F.
dc.contributor.authorUdalski, A.
dc.date.accessioned2011-04-11T10:59:56Z
dc.date.available2011-04-11T10:59:56Z
dc.date.issued2011
dc.identifier.citationMiszalski , B , Mikolajewska , J , Koppen , K , Rauch , T , Acker , A , Cohen , M , Frew , D J , Moffat , A F J , Parker , Q A , Jones , A F & Udalski , A 2011 , ' The influence of binarity on dust obscuration events in the planetary nebula M 2-29 and its analogues ' , Astronomy and Astrophysics , vol. 528 . https://doi.org/10.1051/0004-6361/201015469
dc.identifier.issn0004-6361
dc.identifier.otherPURE: 160202
dc.identifier.otherPURE UUID: f05a5c87-04f2-4525-810e-c431a46cc6c2
dc.identifier.otherdspace: 2299/5603
dc.identifier.otherScopus: 79952171357
dc.identifier.urihttp://hdl.handle.net/2299/5603
dc.descriptionOriginal article can be found at: http://www.aanda.org/ Copyright The European Southern Observatory
dc.description.abstractThe central star of the planetary nebula (CSPN) M 2-29 shows an extraordinary R Coronae Borealis-like fading event in its optical lightcurve. The only other CSPN to show these events are CPD−56◦8032 (Hen 3-1333) and V651 Mon (NGC 2346). Dust cloud formation in the line of sight appears responsible but the exact triggering mechanism is not well understood. Understanding how planetary nebulae (PNe) trigger dust obscuration events may help understand the same process in a wide range of objects including Population-I WC9 stars, symbiotic stars and perhaps Asymptotic Giant Branch (AGB) stars with long secondary periods (LSPs). A binary scenario involving an eccentric, wide companion that triggers dust formation via interaction at periastron is a potential explanation that has been suggested for LSP variables. Model fits to the lightcurves of CPD−56◦8032 and M 2-29 show the dust forms in excess of 70 AU at the inner edge of a dust disk. In the case of CPD−56◦8032 this radius is far too large to coincide with a binary companion trigger, although a binary may have been responsible for the formation of the dust disk. We find no direct evidence to support previous claims of binarity inM2-29 either from the OGLE lightcurve or deep medium-resolution VLT FLAMES spectroscopy of the CSPN. We classify the CSPN as Of(H) with Teff = 50 ± 10 kK and log g = 4.0 ± 0.3. We find a mean distance of 7.4 ± 1.8 kpc to M 2-29 at which the MV = −0.9 mag CSPN could potentially hide a subgiant luminosity or fainter companion. A companion would help explain the multiple similarities with D’-type symbiotic stars whose outer nebulae are thought to be bona-fide PNe. The 7.4 kpc distance, oxygen abundance of 8.3 dex and Galactic coordinates (ℓ = 4.0, b = −3.0) prove that M 2-29 is a Galactic Bulge PN and not a Halo PN as commonly misconceived.en
dc.language.isoeng
dc.relation.ispartofAstronomy and Astrophysics
dc.rightsOpen
dc.subjectISM : planetary nebulae : individual : PN G004.0−03.0
dc.subjectstars : AGB and post-AGB
dc.subjectstars : binaries : symbiotic
dc.titleThe influence of binarity on dust obscuration events in the planetary nebula M 2-29 and its analoguesen
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/10.1051/0004-6361/201015469
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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