Element fractionation in the early solar system: The role of nebular captured H2-envelopes
- Autor(en)
- Helmut Lammer, P. Odert, Martin Leitzinger, Manuel Scherf, Manuel Güdel, Colin Johnstone, Alexander Stökl, Ernst Dorfi
- Abstrakt
The composition of the solar nebula, in which proto-Earth and proto-Venus formed, can be derived by the analysis of different families of chondrites. Compositional variations between those chondrites and the chemical abundances of the terrestrial planets provide evidence that some sort of elemental and isotopic fractionation should have taken place early in the history of the solar system. Some of those fractionations can be explained via atmospheric loss and the collisional erosion of the early differentiated crust, whereas others remained poorly understood. An additional mechanism for the early fractionation of elements and isotopes at the terrestrial planets will thus be described for the first time within this presentation. In addition, our findings do also support the so-called Grant-Tack scenario.
- Organisation(en)
- Institut für Astrophysik
- Externe Organisation(en)
- Österreichische Akademie der Wissenschaften (ÖAW), Karl-Franzens-Universität Graz
- Publikationsdatum
- 09-2017
- ÖFOS 2012
- 103003 Astronomie, 103004 Astrophysik
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/622a1d3a-844a-49ea-a3fd-8b339fb71c13