Isotopic fractionation study towards massive star-forming regions across the Galaxy

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Tác giả: Laura Colzi

Ngôn ngữ: eng

ISBN-13: 978-8855183796

Ký hiệu phân loại:

Thông tin xuất bản: Florence : Firenze University Press, 2021

Mô tả vật lý: 1 electronic resource (230 p.)

Bộ sưu tập: Tài liệu truy cập mở

ID: 241264

One of the most important tools to investigate the chemical history of our Galaxy and our own Solar System is to measure the isotopic fractionation of chemical elements. In the present study new astronomical observations devoted to the study of hydrogen and nitrogen fractionation (D/H and 14N/15N ratios) of molecules, towards massive star-forming regions in different evolutionary phases, have been presented. Moreover, a new detailed theoretical study of carbon fractionation, 12C/13C ratios, has been done. One of the main results was the confirmation that the 14N/15N ratio increases with the galactocentric distance, as predicted by stellar nucleosynthesis Galactic chemical evolution models. This work gives new important inputs on the understanding of local chemical processes that favor the production of molecules with different isotopes in star-forming regions.
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