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  Multidisciplinary analysis of the Hapi region located on Comet 67P/Churyumov–Gerasimenko

Pajola, M., Lee, J.-C., Oklay, N., Hviid, S. F., Penasa, L., Mottola, S., et al. (2019). Multidisciplinary analysis of the Hapi region located on Comet 67P/Churyumov–Gerasimenko. Monthly Notices of the Royal Astronomical Society, 485(2), 2139-2154. doi:10.1093/mnras/stz446.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0003-4E02-4 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-4E03-3
Genre: Journal Article

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 Creators:
Pajola, M, Author
Lee, J-C, Author
Oklay, N, Author
Hviid, S F, Author
Penasa, L, Author
Mottola, S, Author
Shi, Xian1, Author              
Fornasier, S, Author
Davidsson, B, Author
Giacomini, L, Author
Lucchetti, A, Author
Massironi, M, Author
Vincent, J B, Author
Bertini, I, Author
Naletto, G, Author
Ip, W H, Author
Sierks, Holger1, Author              
Lamy, P L, Author
Rodrigo, R, Author
Koschny, D, Author
Keller, H U, AuthorAgarwal, Jessica1, Author              Barucci, M A, AuthorBertaux, J L, AuthorBodewits, D, AuthorCambianica, P, AuthorCremonese, G, AuthorDeppo, V Da, AuthorDebei, S, AuthorCecco, M De, AuthorDeller, Jakob1, Author              El Maarry, M R, AuthorFeller, C, AuthorFerrari, S, AuthorFulle, M, AuthorGutierrez, P J, AuthorGüttler, Carsten1, Author              Lara, L M, AuthorLa Forgia, F, AuthorLazzarin, M, AuthorLin, Z-Y, AuthorMoreno, J J Lopez, AuthorMarzari, F, AuthorPreusker, F, AuthorScholten, F, AuthorToth, I, AuthorTubiana, Cecilia1, 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: methods: data analysis, methods: statistical, comets: individual (67P C-G)
 MPIS_PROJECTS: ROSETTA: OSIRIS
 Abstract: By using the Rosetta/OSIRIS-NAC data set taken in 2014 August, we focus on the neck region, called Hapi, located on 67P Churyumov–Gerasimenko’s Northern hemisphere. The gravitational potential and slopes of Hapi, coupled with the geological unit identification and the boulder size–frequency distributions, support the interpretation that both taluses and gravitational accumulation deposits observable on Hapi are the result of multiple cliff collapses that occurred at different times. By contrast, the fine-particle deposits observable in the central part of the study area are made of aggregates coming from the Southern hemisphere and deposited during each perihelion passage. Both the consolidated terrains on the western part of Hapi, as well as the centrally aligned ridge made of boulder-like features, suggest that Hapi is in structural continuity with the onion-like structure of the main lobe of 67P. Despite the dusty blanket observable on Hapi, its terrains are characterized by water-ice-rich components that, once repeatedly and rapidly illuminated, sublimate, hence resulting in the strong jet activity observed in 2014 August.

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Language(s): eng - English
 Dates: 2019-04-032019
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1093/mnras/stz446
 Degree: -

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Title: Monthly Notices of the Royal Astronomical Society
  Other : Mon. Not. R. Astron. Soc.
Source Genre: Journal
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Affiliations:
Publ. Info: Oxford : Oxford University Press
Pages: - Volume / Issue: 485 (2) Sequence Number: - Start / End Page: 2139 - 2154 Identifier: ISSN: 1365-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000024150