Isotopic fractionation study towards massive star-forming regions across the Galaxy
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 ra...
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| Format: | Online |
| Idioma: | anglès |
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Firenze University Press
2022
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| Accés en línia: | ONIX_20220531_9788855183802_971 |
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| _version_ | 1869520626386993152 |
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| author | Colzi, Laura |
| author_browse | Colzi, Laura |
| author_facet | Colzi, Laura |
| author_sort | Colzi, Laura |
| collection | Directory of Open Access Books |
| description | 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. |
| format | Online |
| id | doab-20.500.12854ir-82813 |
| institution | Directory of Open Access Books |
| language | eng |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Firenze University Press |
| publisherStr | Firenze University Press |
| record_format | ojs |
| spelling | doab-20.500.12854ir-828132025-03-15T19:01:52Z Isotopic fractionation study towards massive star-forming regions across the Galaxy Colzi, Laura astrochemistry stars: formation ISM: molecules nuclear reactions nucleosynthesis abundances Galaxy: evolution methods: numerical 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. 2022-06-02T04:17:56Z 2022-06-02T04:17:56Z 2022-05-31T10:37:29Z 2021 book ONIX_20220531_9788855183802_971 OCN: 1326044535 2612-8020 https://library.oapen.org/handle/20.500.12657/55687 9788855183802 9788855183796 9788855183819 https://directory.doabooks.org/handle/20.500.12854/82813 eng Premio Tesi di Dottorato open access image/jpeg image/jpeg image/jpeg Attribution 4.0 International Attribution 4.0 International Attribution 4.0 International https://library.oapen.org/bitstream/20.500.12657/55687/1/9788855183802.pdf https://library.oapen.org/bitstream/20.500.12657/55687/1/9788855183802.pdf https://library.oapen.org/bitstream/20.500.12657/55687/1/9788855183802.pdf Firenze University Press 10.36253/978-88-5518-380-2 10.36253/978-88-5518-380-2 2ec4474d-93b1-4cfa-b313-9c6019b51b1a 9788855183802 9788855183796 9788855183819 230 Florence open access |
| spellingShingle | astrochemistry stars: formation ISM: molecules nuclear reactions nucleosynthesis abundances Galaxy: evolution methods: numerical Colzi, Laura Isotopic fractionation study towards massive star-forming regions across the Galaxy |
| title | Isotopic fractionation study towards massive star-forming regions across the Galaxy |
| title_full | Isotopic fractionation study towards massive star-forming regions across the Galaxy |
| title_fullStr | Isotopic fractionation study towards massive star-forming regions across the Galaxy |
| title_full_unstemmed | Isotopic fractionation study towards massive star-forming regions across the Galaxy |
| title_short | Isotopic fractionation study towards massive star-forming regions across the Galaxy |
| title_sort | isotopic fractionation study towards massive star forming regions across the galaxy |
| topic | astrochemistry stars: formation ISM: molecules nuclear reactions nucleosynthesis abundances Galaxy: evolution methods: numerical |
| topic_facet | astrochemistry stars: formation ISM: molecules nuclear reactions nucleosynthesis abundances Galaxy: evolution methods: numerical |
| url | ONIX_20220531_9788855183802_971 |
| work_keys_str_mv | AT colzilaura isotopicfractionationstudytowardsmassivestarformingregionsacrossthegalaxy |