An inner gaseous disk around the Herbig Be star MWC 147
| العنوان: | An inner gaseous disk around the Herbig Be star MWC 147 |
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| المؤلفون: | L. B. F. M. Waters, G. van der Plas, P. D. Meerburg, B. Acke, T. Bagnoli, R. Van Lieshout, H. Van Winckel, Gert Raskin |
| المساهمون: | Low Energy Astrophysics (API, FNWI) |
| المصدر: | Astrophysical Journal Letters, 724(1), L5-L8. IOP Publishing Ltd. |
| سنة النشر: | 2010 |
| مصطلحات موضوعية: | Radial surface, Physics, Earth and Planetary Astrophysics (astro-ph.EP), Brightness, Be star, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Circumstellar disk, Optical spectra, Space and Planetary Science, Astrophysics::Solar and Stellar Astrophysics, Sublimation (phase transition), Emission spectrum, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics, Astrophysics - Earth and Planetary Astrophysics |
| الوصف: | We present high-spectral-resolution, optical spectra of the Herbig Be star MWC 147, in which we spectrally resolve several emission lines, including the [O I] lines at 6300 and 6363\deg. Their highly symmetric, double-peaked line profiles indicate that the emission originates in a rotating circumstellar disk. We deconvolve the Doppler-broadened [O I] emission lines to obtain a measure of emission as a function of distance from the central star. The resulting radial surface brightness profiles are in agreement with a disk structure consisting of a flat, inner, gaseous disk and a flared, outer, dust disk. The transition between these components at 2 to 3 AU corresponds to the estimated dust sublimation radius. The width of the double-peaked Mg II line at 4481\deg suggests that the inner disk extends to at least 0.10 AU, close to the corotation radius. Comment: accepted for ApJ Letters (Oct. 2010) |
| اللغة: | English |
| تدمد: | 2041-8205 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c708a757d55ad653f915f35a1751ec9 https://hdl.handle.net/11245/1.336603 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....6c708a757d55ad653f915f35a1751ec9 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20418205 |
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