The 10 μm Feature of M-Type Stars in the Large Magellanic Cloud and the Dust Condensation Sequence

MOspace/Manakin Repository

Breadcrumbs Navigation

The 10 μm Feature of M-Type Stars in the Large Magellanic Cloud and the Dust Condensation Sequence

Please use this identifier to cite or link to this item: http://hdl.handle.net/10355/9929

[-] show simple item record

dc.contributor.author Dijkstra, Catharinus
dc.contributor.author Speck, Angela K.
dc.contributor.author Reid, R. B.
dc.contributor.author Abraham, P.
dc.date.accessioned 2011-02-10T20:13:30Z
dc.date.available 2011-02-10T20:13:30Z
dc.date.issued 2005-11-10
dc.identifier.citation C. Dijkstra et al 2005 ApJ 633 L133 en_US
dc.identifier.issn 2041-8213
dc.identifier.uri http://hdl.handle.net/10355/9929
dc.description doi: 10.1086/498415 en_US
dc.description.abstract We 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.sponsorship This work was supported by the NASA Astrophysical Data Program (NAG 5-12675) and the University of Missouri Research Board. en_US
dc.language.iso en_US en_US
dc.publisher American Astronomical Society en_US
dc.relation.ispartof Physics and Astronomy publications en
dc.subject infrared stars en_US
dc.subject.lcsh Circumstellar matter en_US
dc.subject.lcsh Asymptotic giant branch stars en_US
dc.subject.lcsh Cool stars en_US
dc.subject.lcsh Mass loss (Astrophysics) en_US
dc.title The 10 μm Feature of M-Type Stars in the Large Magellanic Cloud and the Dust Condensation Sequence en_US
dc.type Article en_US
dc.relation.ispartofcommunity University of Missouri-Columbia. College of Arts and Sciences. Department of Physics and Astronomy


This item appears in the following Collection(s)

[-] show simple item record