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http://dspace.mediu.edu.my:8181/xmlui/handle/10261/2667| Title: | Disks around Hot Stars in the Trifid Nebula |
| Keywords: | Dust, extinction ISM : HII regions ISM : individual : Trifid Stars : formation |
| Description: | We report on mid-IR observations of the central region in the Trifid nebula, carried out with ISOCAM in several broad-band infrared filters and in the low resolution spectroscopic mode provided by the circular variable filter. Analysis of the emission indicates the presence of a hot dust component (500 to 1000 K) and a warm dust component at lower temperatures (150-200 K) around several members of the cluster exciting the HII region, and other stars undetected at optical wavelengths. Complementary VLA observations suggest that the mid-IR emission could arise from a dust cocoon or a circumstellar disk, evaporated under the ionization of the central source and the exciting star of the nebula. In several sources the $9.7\mu m$ silicate band is seen in emission. One young stellar source shows indications of crystalline silicates in the circumstellar dust. Peer reviewed |
| URI: | http://dspace.mediu.edu.my:8181/xmlui/handle/10261/2667 |
| Other Identifiers: | arXiv:astro-ph/0101435v2 http://hdl.handle.net/10261/2667 |
| Appears in Collections: | Digital Csic |
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