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After Philae on 67P, still to be done: Chirality Measurements with Cometary Material

Ulamec, Stephan and Meierheinrich, U. J. and Goesmann, F. and Thiemann, W. (2019) After Philae on 67P, still to be done: Chirality Measurements with Cometary Material. EGU General Assembly 2019, 07. - 12. April 2019, Wien, Österreich.

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Abstract

The payload of Philae, the Rosetta lander, included the instrument COSAC, an evolved gas analyser with the capability to differentiate chiral molecules. Philae landed on 67P on November 12, 2014. After the touchdown, as the anchoring harpoons, which were expected to fix the lander to ground, did not work, Philae bounced in the low gravity environment, and only came to rest after a 2 hours “hop” in an unforeseen area on the comet surface. Although, the scientific instruments of the lander, including the mass spectrometers (both of Ptolemy and COSAC), could be operated, and fascinating, unprecedented scientific results were obtained, it was not possible to collect a sample of the surface material. Consequently, the run of the gas chromatography sequence did not bring any scientific results. Thus, the measurement of the chirality of molecules on comets is still to be done in the future. The paper gives an overview of the attempts to measure chiral molecules with COSAC, and suggests future measurements with returned samples from the primitive asteroids (162173) Ryugu and (101955) Bennu with the spacecraft Hayabusa 2 (JAXA) and OSIRIS-REx (NASA), respectively. Both have reached their targets in 2018

Item URL in elib:https://elib.dlr.de/127619/
Document Type:Conference or Workshop Item (Speech)
Title:After Philae on 67P, still to be done: Chirality Measurements with Cometary Material
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ulamec, StephanStephan.Ulamec (at) dlr.deUNSPECIFIED
Meierheinrich, U. J.Université Nice Sophia Antipolis,UNSPECIFIED
Goesmann, F.Max-Planck-Institute for Solar System Research, GöttingenUNSPECIFIED
Thiemann, W.Universität BremenUNSPECIFIED
Date:7 April 2019
Refereed publication:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Philae, 67P,
Event Title:EGU General Assembly 2019
Event Location:Wien, Österreich
Event Type:international Conference
Event Dates:07. - 12. April 2019
Organizer:EGU
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Projekt ROSETTA Lander
Location: Köln-Porz
Institutes and Institutions:Space Operations and Astronaut Training > User center for space experiments (MUSC)
Deposited By: Herrmann, Astrid
Deposited On:29 May 2019 15:29
Last Modified:29 May 2019 15:29

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