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  Evidence for the formation of comet 67P/Churyumov-Gerasimenko through gravitational collapse of a bound clump of pebbles

Blum, J., Gundlach, B., Krause, M., Fulle, M., Johansen, A., Agarwal, J., et al. (2017). Evidence for the formation of comet 67P/Churyumov-Gerasimenko through gravitational collapse of a bound clump of pebbles. Monthly Notices of the Royal Astronomical Society, 469(Suppl. 2), S755-S773. doi:10.1093/mnras/stx2741.

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 Creators:
Blum, Jürgen, Author
Gundlach, Bastian, Author
Krause, Maya, Author
Fulle, Marco, Author
Johansen, Anders, Author
Agarwal, Jessica1, Author              
von Borstel, Ingo, Author
Shi, Xian1, Author              
Hu, Xuanyu, Author
Bentley, Mark S, Author
Capaccioni, Fabrizio, Author
Colangeli, Luigi, Author
Corte, Vincenzo Della, Author
Fougere, Nicolas, Author
Green, Simon F, Author
Ivanovski, Stavro, Author
Mannel, Thurid, Author
Merouane, Sihane1, Author              
Migliorini, Alessandra, Author
Rotundi, Alessandra, Author
Schmied, Roland, AuthorSnodgrass, Colin, Author more..
Affiliations:
1Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832288              

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Free keywords: comets: individual: 67P/Churyumov-Gerasimenko, planets and satellites: formation, protoplanetary discs
 MPIS_PROJECTS: ROSETTA: COSIMA
 Abstract: The processes that led to the formation of the planetary bodies in the Solar system are still not fully understood. Using the results obtained with the comprehensive suite of instruments onboard the European Space Agency's Rosetta mission, we present evidence that comet 67P/Churyumov-Gerasimenko likely formed through the gentle gravitational collapse of a bound clump of mm-sized dust aggregates (‘pebbles’), intermixed with microscopic ice particles. This formation scenario leads to a cometary make-up that is simultaneously compatible with the global porosity, homogeneity, tensile strength, thermal inertia, vertical temperature profiles, sizes and porosities of emitted dust and the steep increase in water-vapour production rate with decreasing heliocentric distance, measured by the instruments onboard the Rosetta spacecraft and the Philae lander. Our findings suggest that the pebbles observed to be abundant in protoplanetary discs around young stars provide the building material for comets and other minor bodies.

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Language(s): eng - English
 Dates: 2018-04-102017
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1093/mnras/stx2741
 Degree: -

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Title: Monthly Notices of the Royal Astronomical Society
  Other : Mon. Not. R. Astron. Soc.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Oxford : Oxford University Press
Pages: - Volume / Issue: 469 (Suppl. 2) Sequence Number: - Start / End Page: S755 - S773 Identifier: ISSN: 1365-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000024150