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Isotopic fractionation study towards massive star-forming regions across the Galaxy
Laura Colzi
2021
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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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Keywords
- abundances
- Applied Physics
- astrochemistry
- Astronomy, space & time
- Galaxy: evolution
- ISM: molecules
- Mathematics & science
- methods: numerical
- Nuclear reactions
- nucleosynthesis
- Physics
- stars: formation
- thema EDItEUR::P Mathematics and Science::PG Astronomy, space and time
- thema EDItEUR::P Mathematics and Science::PG Astronomy, space and time::PGC Theoretical and mathematical astronomy
- thema EDItEUR::P Mathematics and Science::PH Physics::PHV Applied physics
- Theoretical & mathematical astronomy
Links
DOI: 10.36253/978-88-5518-380-2Editions