Deuterated molecules in DM Tauri: DCO+, but no HDO
نویسندگان
چکیده
منابع مشابه
Deuterated molecules in DM Tau: DCO, but no HDO
We report the detection of the J=2-1 line of DCO in the proto-planetary disk of DM Tau and re-analyze the spectrum covering the 465 GHz transition of HDO in this source, recently published by Ceccarelli et al. (2005). A modelling of the DCO line profile with the source parameters derived from high resolution HCO observations yields a DCO/HCO abundance ratio of ≃ 4×10−3, an order of magnitude sm...
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We present Submillimeter Array observations of several deuterated species in the disk around the classical T Tauri star TW Hydrae at arcsecond scales, including detections of the DCN J 1⁄4 3Y2 and DCO J 1⁄4 3Y2 lines and upper limits to the HDO 31;2Y22;1, ortho-H2D 11;0Y11;1, and para-D2H 11;0Y10;1 transitions. We also present observations of the HCN J 1⁄4 3Y2, HCO J 1⁄4 3Y2, and HCO J 1⁄4 4Y3 ...
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Study of the fusion reactions between hydrogen isotopes in muonic molecules is the first example of the accurate accounting of the nucleus charge screening by a muon in the fusion process. At LUNA installation the measurements of astrophysical reaction cross sections were extended down to collision energies of a few keV. The screening by atomic electrons of the target became substantial. The po...
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Aims. We present time dependent chemical models for a dense and warm O-rich gas exposed to a strong far ultraviolet field aiming at exploring the formation of simple organic molecules in the inner regions of protoplanetary disks around T Tauri stars. Methods. An up-to-date chemical network is used to compute the evolution of molecular abundances. Reactions of H2 with small organic radicals such...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2006
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:200600005