Journal articles
Are fractured cliffs the source of cometary dust jets ? insights from OSIRIS/Rosetta at 67P/Churyumov-Gerasimenko
Jean-Baptiste Vincent
1
Nilda Oklay
1
Maurizio Pajola
2
Sebastien Höfner
1, 3
Holger Sierks
1
X. Hu
1, 3
Cesare Barbieri
4
Philippe L. Lamy
5
R. Rodrigo
6, 7
Detlef Koschny
8
Hans Rickman
9, 10
Horst Uwe Keller
3
Michael F. A'Hearn
11, 1, 12
Maria A. Barucci
13
Jean-Loup Bertaux
14
I. Bertini
2
S. Besse
8
Dennis Bodewits
12
Gabriele Cremonese
15
Vania da Deppo
16
B. Davidsson
10
Stefano Debei
17
M. de Cecco
18
Mohamed R. El-Maarry
19
Sonia Fornasier
13
M. Fulle
20
Olivier Groussin
5
Pedro J. Gutiérrez
21
P. Gutiérrez-Marquez
1
C. Güttler
1
M. Hofmann
1
S. F. Hviid
22
W. -H. Ip
23
L. Jorda
5
J. Knollenberg
22
G. Kovacs
1, 24
J. -R. Kramm
1
Ekkehard Kührt
22
M. Küppers
25
L. M. Lara
21
M. Lazzarin
4
Z. -Y. Lin
23
J. J. Lopez Moreno
21
S. Lowry
26
F. Marzari
4
M. Massironi
2
F. Moreno
21
S. Mottola
22
G. Naletto
2, 16, 27
F. Preusker
22
F. Scholten
22
X. Shi
1
Nicholas Thomas
19
I. Toth
28, 5
C. Tubiana
1
Jean-Baptiste Vincent 1
Author
Nilda Oklay 1
Author
Maurizio Pajola 2
Author
Sebastien Höfner 1, 3
Author
Michael F. A'Hearn 11, 1, 12
Author
Maria A. Barucci 13
Author
Jean-Loup Bertaux 14
Author
I. Bertini 2
Author
1
MPS - Max-Planck-Institut für Sonnensystemforschung (Göttingen, Allemagne - Germany)
- Max-Planck-Gesellschaft (Jägerstrasse, 10-11, D-10117 Berlin - Germany)
2
CISAS - Centro di Ateneo di Studi e Attività Spaziali “Giuseppe Colombo” (Via Venezia 15, 35131 Padova, Italie - Italy)
- Universita degli Studi di Padova (Via 8 Febbraio 2, 35122 Padova - Italy)
3
IGEP - Institut für Geophysik und Extraterrestrische Physik [Braunschweig] (Mendelssohnstr. 3, D-38106 Braunschweig - Germany)
- Technische Universität Braunschweig [Braunschweig] (38092 Braunschweig - Germany)
4
Dipartimento di Fisica e Astronomia "Galileo Galilei" (via Marzolo 8, I-35131 Padova - Italy)
- Universita degli Studi di Padova (Via 8 Febbraio 2, 35122 Padova - Italy)
5
LAM - Laboratoire d'Astrophysique de Marseille (Pôle de l'Étoile Site de Château-Gombert 38, rue Frédéric Joliot-Curie 13388 Marseille cedex 13 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR7326 (France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- AMU - Aix Marseille Université : UMR7326 (Aix-Marseille Université Jardins du Pharo 58 Boulevard Charles Livon 13284 Marseille cedex 7 - France)
- CNES - Centre National d'Études Spatiales [Toulouse] : UMR7326 (18 avenue Edouard Belin 31401 Toulouse - France)
6
CAB - Centro de Astrobiologia [Madrid] (28850 Torrejón de Ardoz, Madrid - Spain)
- INTA - Instituto Nacional de Técnica Aeroespacial ( Torrejón de Ardoz, Madrid - Spain)
- CSIC - Consejo Superior de Investigaciones Científicas [Spain] (Serrano 117, 28006 Madrid - Spain)
7
ISSI - International Space Science Institute [Bern] (Hallerstrasse 6 3012 Bern - Switzerland)
8
RSSD - Research and Scientific Support Department, ESTEC (ESTEC, Box 299, NL-2200 AG , Noordwijk, The Netherlands - Netherlands)
- ESTEC - European Space Research and Technology Centre (Keplerlaan 1, 2201 Noordwijk - Netherlands)
- ESA - European Space Agency (France)
9
CBK - Space Research Centre of Polish Academy of Sciences (Bartycka 18A, 00-716 Warsaw, Poland - Poland)
- PAN - Polska Akademia Nauk (Poland)
10
Department of Physics and Astronomy [Uppsala] (751 05 Uppsala - Sweden)
- Uppsala University (Box 256, SE-751 05 Uppsala - Sweden)
12
Department of Astronomy [College Park] (United States)
- University of Maryland [College Park] (College Park, MD 20742 - United States)
- University of Maryland System (United States)
13
LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique (5, place Jules Janssen 92190 MEUDON - France)
- UPMC - Université Pierre et Marie Curie - Paris 6 (4 place Jussieu - 75005 Paris - France)
- INSU - CNRS - Institut national des sciences de l'Univers (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- Observatoire de Paris (61 Av de l'Observatoire 75014 PARIS - France)
- PSL - Université Paris sciences et lettres (60 rue Mazarine 75006 Paris - France)
- UPD7 - Université Paris Diderot - Paris 7 (5 rue Thomas-Mann - 75205 Paris cedex 13 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR8109 (France)
14
IMPEC - LATMOS (France)
- LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales (11 boulevard d'Alembert
Quartier des Garennes
78280 - Guyancourt - France)
- UVSQ - Université de Versailles Saint-Quentin-en-Yvelines : UMR8190 (55 avenue de Paris - 78035 Versailles cedex - France)
- UPMC - Université Pierre et Marie Curie - Paris 6 : UMR8190 (4 place Jussieu - 75005 Paris - France)
- INSU - CNRS - Institut national des sciences de l'Univers : UMR8190 (INSU-CNRS 3 rue Michel-Ange, 75794 Paris Cedex 16 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR8190 (France)
15
OAPD - INAF - Osservatorio Astronomico di Padova (Vicolo dell'Osservatorio, 5, 35122 Padova - Italy)
- INAF - Istituto Nazionale di Astrofisica (Viale del Parco Mellini 84, 00136 Roma - Italy)
16
IFN - CNR Institute for Photonics and Nanotechnologies (Italy)
- CNR - Consiglio Nazionale delle Ricerche [Roma] (Piazzale Aldo Moro,7 - 00185, Roma - Italy)
17
Department of Industrial Engineering [Padova] (Dipartimento di Ingegneria Industriale, Via Gradenigo, 6/a, 35131 Padova - Italy)
- Universita degli Studi di Padova (Via 8 Febbraio 2, 35122 Padova - Italy)
18
University of Trento [Trento] (via Calepina, 14 - I-38122 Trento
- Italy)
19
Physikalisches Institut [Bern] (Sidlerstr. 5, 3012 Bern - Switzerland)
- Universität Bern [Bern] (Hochschulstrasse 4 - CH-3012 Bern - Switzerland)
20
OAT - INAF - Osservatorio Astronomico di Trieste (Via G.B. Tiepolo 11 34143 TRIESTE, Italy - Italy)
- INAF - Istituto Nazionale di Astrofisica (Viale del Parco Mellini 84, 00136 Roma - Italy)
21
IAA - Instituto de Astrofísica de Andalucía (Granada E-18008 - Spain)
- CSIC - Consejo Superior de Investigaciones Científicas [Spain] (Serrano 117, 28006 Madrid - Spain)
23
Institute of Space Science [Taiwan] (Taoyuan City 32001, Taiwan - Taiwan)
- NCU - National Central University [Taiwan] (300, Zhongda Road, Zhongli District, Taoyuan City, Taïwan 320 - Taiwan)
24
MOMEI - Department of Mechatronics, Optics and Mechanical Engineering Informatics (407 Building D, 4-6 Bertalan Lajos Street, Budapest 1111, Hungary - Hungary)
- BME - Budapest University of Technology and Economics [Budapest] (Műegyetem rkp. 3, 1111 - Budapest - Hungary)
25
ESAC - European Space Astronomy Centre (Camino bajo del Castillo, s/n, Urbanización Villafranca del Castillo,, Villanueva de la Cañada, E-28692 Madrid
- Spain)
- ESA - European Space Agency (France)
26
CAPS - Centre for Astrophysics and Planetary Science [Canterbury] (School of Physical Sciences - United Kingdom)
- University of Kent [Canterbury] (Canterbury, Kent, CT2 7NZ - United Kingdom)
27
DEI - Department of Information Engineering [Padova] (Via Gradenigo, 6/b,
35131 Padova - Italy)
- Universita degli Studi di Padova (Via 8 Febbraio 2, 35122 Padova - Italy)
28
Konkoly Observatory (Budapest - Hungary)
- Research Centre for Astronomy and Earth Sciences [Budapest] (H-1112 Budapest - Hungary)
- MTA - Hungarian Academy of Sciences (Széchenyi István sqr. 9, 1051 Budapest - Hungary)
Abstract : Dust jets (i.e., fuzzy collimated streams of cometary material arising from the nucleus) have been observed in situ on all comets since the Giotto mission flew by comet 1P/Halley in 1986, and yet their formation mechanism remains unknown. Several solutions have been proposed involving either specific properties of the active areas or the local topography to create and focus the gas and dust flows. While the nucleus morphology seems to be responsible for the larger features, high resolution imagery has shown that broad streams are composed of many smaller jets (a few meters wide) that connect directly to the nucleus surface.
Aims. We monitored these jets at high resolution and over several months to understand what the physical processes are that drive their formation and how this affects the surface.
Methods. Using many images of the same areas with different viewing angles, we performed a 3-dimensional reconstruction of collimated jets and linked them precisely to their sources on the nucleus.
Results. We show here observational evidence that the northern hemisphere jets of comet 67P/Churyumov-Gerasimenko arise from areas with sharp topographic changes and describe the physical processes involved. We propose a model in which active cliffs are the main source of jet-like features and therefore of the regions eroding the fastest on comets. We suggest that this is a common mechanism taking place on all comets.
Keywords :
Comets
67P/Churyumov-Gerasimenko
Document type :
Journal articles
Complete list of metadatas
https://hal-insu.archives-ouvertes.fr/insu-01274339
Contributor : Catherine Cardon <>
Submitted on : Monday, February 15, 2016 - 5:12:18 PM
Last modification on : Wednesday, October 14, 2020 - 3:47:29 AM
Contributor : Catherine Cardon <>
Submitted on : Monday, February 15, 2016 - 5:12:18 PM
Last modification on : Wednesday, October 14, 2020 - 3:47:29 AM
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Identifiers
- HAL Id : insu-01274339, version 1
- ARXIV : 1512.03193
- BIBCODE : 2016A&A...587A..14V
- DOI : 10.1051/0004-6361/201527159
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Citation
Jean-Baptiste Vincent, Nilda Oklay, Maurizio Pajola, Sebastien Höfner, Holger Sierks, et al.. Are fractured cliffs the source of cometary dust jets ? insights from OSIRIS/Rosetta at 67P/Churyumov-Gerasimenko. Astronomy and Astrophysics - A&A, EDP Sciences, 2016, 587 (March), A14 (15 p.). ⟨10.1051/0004-6361/201527159⟩. ⟨insu-01274339⟩
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