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dc.contributor.authorDijkstra, Catharinus
dc.contributor.authorSpeck, Angela K.
dc.contributor.authorReid, R. B.
dc.contributor.authorAbraham, P.
dc.date.issued2005-11eng
dc.descriptiondoi: 10.1086/498415en_US
dc.description.abstractWe present 7-14 mm Infrared Space Observatory (ISO) spectroscopy of 12 M-type evolved stars in the Large Magellanic Cloud (LMC), in order to study the dust mineralogy and condensation process around these stars. The sample stars show a broad dust feature in the 7-14 mm region, which is seen in either emission or (self-) absorption. The shape of the feature changes with increasing mass-loss rate, M, suggesting a change in dust ˙M mineralogy as the central star evolves. At low mass-loss rates amorphous alumina and amorphous silicates are observed, while at high mass- loss rates only amorphous silicates are seen, in agreement with the classical condensation sequence expected for these materials.We find a clear correlation between and the peak wavelength ˙M position of the broad dust feature. Our data suggest a strong dependence of the dust mineralogy on the temperature at the dust condensation radius.en_US
dc.description.sponsorshipThis work was supported by the NASA Astrophysical Data Program (NAG 5-12675) and the University of Missouri Research Board.en_US
dc.identifier.citationC. Dijkstra et al 2005 ApJ 633 L133en_US
dc.identifier.issn2041-8213
dc.identifier.urihttp://hdl.handle.net/10355/9929
dc.publisherAmerican Astronomical Societyen_US
dc.relation.ispartofPhysics and Astronomy publicationsen
dc.relation.ispartofcommunityUniversity of Missouri-Columbia. College of Arts and Sciences. Department of Physics and Astronomy
dc.subjectinfrared starsen_US
dc.subject.lcshCircumstellar matteren_US
dc.subject.lcshAsymptotic giant branch starsen_US
dc.subject.lcshCool starsen_US
dc.subject.lcshMass loss (Astrophysics)en_US
dc.titleThe 10 μm Feature of M-Type Stars in the Large Magellanic Cloud and the Dust Condensation Sequenceen_US
dc.typeArticleen_US


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