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Detection of detached dust envelopes around oxygen-rich AGB stars |
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| Authors: | O Hashimoto H Izumiura D J M Kester Tj R Bontekoe |
| Institution: | (1) Department of Applied Physics, Seikei University, Musashino, Tokyo, Japan;(2) SRON Laboratory for Space Research Groningen, Groningen, The Netherlands;(3) Space Science Department of ESA, ESTEC, Astrophysics Division, Noordwijk, The Netherlands;(4) Department of Astronomy and Earth Sciences, Tokyo Gakugei University, Koganei, Tokyo, Japan |
| Abstract: | Extended emission components are clearly found in the IRAS scan data of optically visible oxygen-rich AGB stars which show no 10µm silicate band feature in the IRAS LRS spectra but a strong infrared excess in the IRAS photometric data. It is most likely that these stars really have their circumstellar dust envelopes, which are detached from the central stars, indicating a halting of mass loss for a significant period. |
| Keywords: | circumstellar dust stars : AGB Mass loss stars: individual : R Hya |
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