천문학회보 (The Bulletin of The Korean Astronomical Society)
- 제42권2호
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- Pages.89.3-89.3
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- 2017
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- 1226-2692(pISSN)
The D/H ratio of N2H+ in the inner envelope of YSOs
- Baek, Giseon (School of Space Research, Kyung Hee Uni-versity) ;
- Lee, Jeong-Eun (School of Space Research, Kyung Hee Uni-versity)
- 발행 : 2017.10.10
초록
Recent interferometric observations toward embedded protostellar systems show a clear offset between the emission peaks of N2D+ and N2H+. However, the chemical model that con-siders solely freeze-out and desorption from the dust grains could not reproduce the ob-servations. This difference between two spe-cies in the depletion zone might be caused by the reduction of the deuterated molecules, due to the reactions on grain surfaces. We present that the abundance offset between N2H+ and N2D+ can be explained if the chemi-cal model includes the surface chemistry, especially for the deuterated.
키워드