| Autor: |
J. McCombie, Peter J. Sarre, T. H. Kerr, In-Ok Song |
| Rok vydání: |
2007 |
| Předmět: |
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| Zdroj: |
Monthly Notices of the Royal Astronomical Society. 380:979-985 |
| ISSN: |
0035-8711 |
| Popis: |
A new analysis of long-slit CGS4 (UKIRT) spectra of the 3.3 $\mu$m feature of the Red Rectangle and its evolution with offset along the NW whisker of the nebula is presented. The results support a proposed two-component interpretation for the 3.3 $\mu$m feature with peak wavelengths near 3.28 $\mu$m and 3.30 $\mu$m. Both components exhibit a small shift to shorter wavelength with increasing offset from the central star which, by comparison with laboratory studies, is consistent with a decrease in temperature of the carriers with distance from HD 44179. The two-component approach is also applied to 3.3 $\mu$m data for the Red Rectangle, Orion Bar D2 and Orion Bar H2S1 from ISO SWS studies. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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