Noble gases in Dome C micrometeorites - An attempt to disentangle asteroidal and cometary sources

• Published in: Icarus
• Main Authors: Baecker, Bastian, Ott, Ulrich, Trieloff, Mario, Engrand, Cécile, Duprat, Jean
• Other Authors: Max-Planck-Institut für Chemie (MPIC), Max-Planck-Gesellschaft, Institut für Geowissenschaften Heidelberg, Universität Heidelberg Heidelberg = Heidelberg University, MTA Atomki, Partenaires INRAE, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Cosmochimie IMPMC (IMPMC_COSMO), Institut de minéralogie, de physique des matériaux et de cosmochimie (IMPMC), Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement IRD : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Muséum national d'Histoire naturelle (MNHN)-Institut de recherche pour le développement IRD : UR206-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), B.B., U.O. and M.T. acknowledge funding by the German Research Foundation, DFG-grants OT 171/5-1 and 5-2, M.T. also thanks the Klaus Tschira Stiftung. Region Ile de France (DIM-ACAV+), PNP/INSU, CNES, IN2P3.Collection of the micrometeorites was performed at CONCORDIA Station (project #1120) and financially supported by the French Polar Institute (IPEV)., ANR-18-CE31-0011,COMETOR,Origine de la poussière cométaire(2018), ANR-10-LABX-0038,P2IO,Physics of the 2 infinities and the origins(2010)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2022
• Subjects: Falkensee; Germany; Micrometeorites; Noble gases; Cosmic ray exposure; Comets; Asteroids; Xenon; [SDU]Sciences of the Universe [physics]; Antarctic; The Antarctic; Saturn; Antarc*
• Online Access: https://hal.science/hal-03854561; https://hal.science/hal-03854561/document; https://hal.science/hal-03854561/file/MMs-DC-rev27-12-21.pdf; https://doi.org/10.1016/j.icarus.2022.114884

International audience We have performed a comprehensive noble gas study, including the isotopes of krypton and xenon, on a set of micrometeorites (MMs) collected from surface snow at Dome C (DC) on the Antarctic plateau. He and Ne are generally dominated by a solar component, with lower 4 He concen...