Linking the nitrogen isotopic composition of star-forming regions with comet 67P
| Autor: | Wampfler, Susanne, Rubin, Martin, Altwegg, Kathrin, Jørgensen, Jes Kristian, Calcutt, Hannah, Coutens, Audrey |
|---|---|
| Přispěvatelé: | Pomies, Marie-Paule, Center for Space and Habitability (CSH), University of Bern, Physikalisches Institut [Bern], Universität Bern [Bern], AMOR 2018, Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | 42nd COSPAR Scientific Assembly. Held 14-22 July 2018, in Pasadena, California, USA, Abstract id. B1.3-21-18. 42nd COSPAR Scientific Assembly. Held 14-22 July 2018, in Pasadena, California, USA, Abstract id. B1.3-21-18., Jul 2018, pasadena, United States |
| Popis: | International audience; There are large variations in the stable isotope composition of the volatile elements hydrogen, nitrogen, and oxygen among the solar system bodies. The solar system solids are typically enriched in the rare heavy isotopes (D, 15N, 17O, 18O) compared to the Sun and Jupiter. To understand the origin of these isotopic anomalies, a cross-disciplinary link between the fields of astronomy, cosmochemistry, and solar system science is indispensable. However, establishing such as link is not straightforward, as astronomical observations mainly target the gas in star-forming regions, whereas the most pristine solar system materials are present in the form of meteorites and cometary ices. The ratio of the two stable nitrogen isotopes, 14N/15N, is a promising tool for linking results across the fields, as the nitrogen isotopic composition can be measured in star-forming regions and solar system bodies. The 14N/15N ratio should also be less prone to secondary alteration than the deuterium-to-hydrogen ratio.In this contribution, we will present spatially resolved measurements of the 14N/15N ratio around embedded protostars from IRAM observations and the Protostellar Interferometric Line Survey (PILS) with ALMA. First results on the nitrogen isotopic composition of comet 67P/Churyumov-Gerasimenko by Rosetta-ROSINA will also be presented, and we will explain how we are trying to link these data sets to gain insights into the origin of nitrogen in our solar system and beyond. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|