Physical properties and dynamical relation of the circular depressions on comet 67P/Churyumov-Gerasimenko
Wing-Huen Ip
(1, 2, 3)
,
I.-L. Lai
(3)
,
J.-C. Lee
(4)
,
Y.-C. Cheng
(1)
,
Y. Li
(2)
,
Z.-Y. Lin
(1)
,
Jean-Baptiste Vincent
(5)
,
Sébastien Besse
(6)
,
Holger Sierks
(5)
,
Cesare Barbieri
(7, 8)
,
Philippe L. Lamy
(9)
,
Rafael Rodrigo
(10, 11)
,
Detlef Koschny
(6)
,
Hans Rickman
(12, 13)
,
Horst U. Keller
(14)
,
Jessica Agarwal
(5)
,
Michael F. A'Hearn
(15)
,
Maria A. Barucci
(16)
,
Jean-Loup Bertaux
(17)
,
Ivano Bertini
(8)
,
Dennis Bodewits
(15)
,
S. Boudreault
(5)
,
Gabriele Cremonese
(18)
,
Vania da Deppo
(19)
,
B. Davidsson
(13)
,
Stefano Debei
(20)
,
M. de Cecco
(21)
,
M. R. El-Maarry
(22)
,
Sonia Fornasier
(16)
,
Marco Fulle
(23)
,
Olivier Groussin
(9)
,
Pedro J. Gutiérrez
(24)
,
Carsten Guettler
(5)
,
Stubbe F. Hviid
(25)
,
Laurent Jorda
(9)
,
J. Knollenberg
(25)
,
G. Kovacs
(5)
,
J.-R. Kramm
(5)
,
Ekkehard Kührt
(25)
,
M. Küppers
(26)
,
F. La Forgia
(7)
,
Luisa M. Lara
(24)
,
M. Lazzarin
(7)
,
J. J. López-Moreno
(24)
,
S. Lowry
(27)
,
Simone Marchi
(28)
,
F. Marzari
(7)
,
H. Michalik
(14)
,
S. Mottola
(25)
,
G. Naletto
(8, 29, 19)
,
Nilda Oklay
(5)
,
M. Pajola
(8)
,
Nichoilas Thomas
(22)
,
E. Toth
(30)
,
Cécilia Tubiana
(5)
1
IANCU -
Institute of Astronomy [Taiwan]
2 SSI - Space Science Institute [Macau]
3 Institute of Space Science [Taiwan]
4 Department of Atmospheric Sciences [Taoyuan City]
5 MPS - Max-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research
6 RSSD - Research and Scientific Support Department, ESTEC
7 Dipartimento di Fisica e Astronomia "Galileo Galilei"
8 CISAS - Centro di Ateneo di Studi e Attività Spaziali “Giuseppe Colombo”
9 LAM - Laboratoire d'Astrophysique de Marseille
10 CAB - Centro de Astrobiologia [Madrid]
11 ISSI - International Space Science Institute [Bern]
12 CBK - Space Research Centre of Polish Academy of Sciences
13 Department of Physics and Astronomy [Uppsala]
14 IGEP - Institut für Geophysik und Extraterrestrische Physik [Braunschweig]
15 Department of Astronomy [College Park]
16 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique
17 PLANETO - LATMOS
18 OAPD - INAF - Osservatorio Astronomico di Padova
19 IFN - CNR Institute for Photonics and Nanotechnologies
20 Department of Industrial Engineering [Padova]
21 UNITN - Università degli Studi di Trento = University of Trento
22 Physikalisches Institut [Bern]
23 OAT - INAF - Osservatorio Astronomico di Trieste
24 IAA - Instituto de Astrofísica de Andalucía
25 DLR Institut für Planetenforschung
26 Operations Department (ESAC)
27 CAPS - Centre for Astrophysics and Planetary Science [Canterbury]
28 SSERVI - Solar System Exploration Research Virtual Institute
29 DEI - Department of Information Engineering [Padova]
30 Konkoly Observatory
2 SSI - Space Science Institute [Macau]
3 Institute of Space Science [Taiwan]
4 Department of Atmospheric Sciences [Taoyuan City]
5 MPS - Max-Planck-Institut für Sonnensystemforschung = Max Planck Institute for Solar System Research
6 RSSD - Research and Scientific Support Department, ESTEC
7 Dipartimento di Fisica e Astronomia "Galileo Galilei"
8 CISAS - Centro di Ateneo di Studi e Attività Spaziali “Giuseppe Colombo”
9 LAM - Laboratoire d'Astrophysique de Marseille
10 CAB - Centro de Astrobiologia [Madrid]
11 ISSI - International Space Science Institute [Bern]
12 CBK - Space Research Centre of Polish Academy of Sciences
13 Department of Physics and Astronomy [Uppsala]
14 IGEP - Institut für Geophysik und Extraterrestrische Physik [Braunschweig]
15 Department of Astronomy [College Park]
16 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique
17 PLANETO - LATMOS
18 OAPD - INAF - Osservatorio Astronomico di Padova
19 IFN - CNR Institute for Photonics and Nanotechnologies
20 Department of Industrial Engineering [Padova]
21 UNITN - Università degli Studi di Trento = University of Trento
22 Physikalisches Institut [Bern]
23 OAT - INAF - Osservatorio Astronomico di Trieste
24 IAA - Instituto de Astrofísica de Andalucía
25 DLR Institut für Planetenforschung
26 Operations Department (ESAC)
27 CAPS - Centre for Astrophysics and Planetary Science [Canterbury]
28 SSERVI - Solar System Exploration Research Virtual Institute
29 DEI - Department of Information Engineering [Padova]
30 Konkoly Observatory
Wing-Huen Ip
- Fonction : Auteur
- PersonId : 770404
- ORCID : 0000-0001-5368-386X
Cesare Barbieri
- Fonction : Auteur
- PersonId : 757032
- ORCID : 0000-0002-6257-9076
Vania da Deppo
- Fonction : Auteur
- PersonId : 763247
- ORCID : 0000-0001-6273-8738
Laurent Jorda
- Fonction : Auteur
- PersonId : 746464
- IdHAL : laurent-jorda
- ORCID : 0000-0001-8735-3308
- IdRef : 180975161
M. Pajola
- Fonction : Auteur
- PersonId : 767226
- ORCID : 0000-0002-3144-1277
Résumé
Aims. We aim to characterize the circular depressions of comet 67P/Churyumov-Gerasimenko and investigate whether such surface morphology of a comet nucleus is related to the cumulative sublimation effect since becoming a Jupiter family comet (JFC). Methods. The images from the Rosetta/OSIRIS science camera experiment are used to construct size frequency distributions of the circular depression structures on comet 67P and they are compared with those of the JFCs 81P/Wild 2, 9P/Tempel 1, and 103P/Hartley 2. The orbital evolutionary histories of these comets over the past 100 000 yr are analyzed statistically and compared with each other. Results. The global distribution of the circular depressions over the surface of 67P is charted and classified. Descriptions are given to the characteristics and cumulative size frequency distribution of the identified features. Orbital statistics of the JFCs visited by spacecraft are derived. Conclusions. The size frequency distribution of the circular depressions is found to have a similar power law distribution to those of 9P/Tempel 1 and 81P/Wild 2. This might imply that they could have been generated by the same process. Orbital integration calculation shows that the surface erosion histories of 81P/Wild 2, and 9P/Tempel 1 could be shorter than those of 67P, 103 P/Hartley 2 and 19P/Borrelly. From this point of view, the circular depressions could be dated back to the pre-JFC phase or the transneptunian phase of these comets. The north-south asymmetry in the distribution of the circular depressions could be associated with the heterogeneous structure of the nucleus of comet 67P and/or the solar insolation history.
Domaines
Astrophysique [astro-ph]| Origine | Fichiers éditeurs autorisés sur une archive ouverte |
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