Main Belt evolution in the context of adaptive-optics observations of large asteroids
Miroslav Broz
,
Pavel Sevecek
,
Pierre Vernazza
(1)
,
Laurent Jorda
(2)
,
Josef Hanus
,
Michael Marsset
(3)
,
Alexis Drouard
(2)
,
Matti Viikinkoski
(4)
,
Benoit Carry
(5)
,
Franck Marchis
(6)
,
Romain Fétick
(7)
,
Thierry Fusco
(2)
,
Mirel Birlan
(8)
1
LESIA -
Laboratoire d'études spatiales et d'instrumentation en astrophysique
2 LAM - Laboratoire d'Astrophysique de Marseille
3 ARC - Astrophysics Research Centre [Belfast]
4 Department of Mathematics [Tampere]
5 ESAC - European Space Astronomy Centre
6 SETI - Search for Extraterrestrial Intelligence Institute
7 LAM - Les Afriques dans le monde
8 IMCCE - Institut de Mécanique Céleste et de Calcul des Ephémérides
2 LAM - Laboratoire d'Astrophysique de Marseille
3 ARC - Astrophysics Research Centre [Belfast]
4 Department of Mathematics [Tampere]
5 ESAC - European Space Astronomy Centre
6 SETI - Search for Extraterrestrial Intelligence Institute
7 LAM - Les Afriques dans le monde
8 IMCCE - Institut de Mécanique Céleste et de Calcul des Ephémérides
Miroslav Broz
- Fonction : Auteur
Pavel Sevecek
- Fonction : Auteur
Pierre Vernazza
- Fonction : Auteur
- PersonId : 738592
- IdHAL : pierre-vernazza
- ORCID : 0000-0002-2564-6743
- IdRef : 112732976
Laurent Jorda
- Fonction : Auteur
- PersonId : 746464
- IdHAL : laurent-jorda
- ORCID : 0000-0001-8735-3308
- IdRef : 180975161
Josef Hanus
- Fonction : Auteur
Matti Viikinkoski
- Fonction : Auteur
- PersonId : 767796
- ORCID : 0000-0001-8601-9164
Franck Marchis
- Fonction : Auteur
- PersonId : 755708
- ORCID : 0000-0001-7016-7277
Romain Fétick
- Fonction : Auteur
- PersonId : 185109
- IdHAL : romain-fetick
- ORCID : 0000-0002-1329-7603
Mirel Birlan
- Fonction : Auteur
- PersonId : 738892
- IdHAL : mirel-birlan
- ORCID : 0000-0003-3495-8535
- IdRef : 149395191
Résumé
According to the size-frequency distribution (SFD) of the Main Belt, there are approximately 4 times 105 small (D = 2-3 km) projectiles which determine the surface topography of large (D > 100 km) targets. Nowadays, the topography is accessible to adaptive-optics observations by the VLT/SPHERE/ZIMPOL instrument, which typically have a pixel scale 3 km and capability to resolve Dc = 30-40 km craters in suitably illuminated areas. We used statistical collisional models (Monte-Carlo) to compute intrinsic collisional probabilities, impact velocities, expected number of catastrophic collisions, numbers of cratering events, taking into account not only mean numbers but also their dispersion. Even within the Main Belt, collisional environment can be very different from target to target.
Domaines
Astrophysique [astro-ph]Format du dépôt | Notice |
---|---|
Type de dépôt | Communication dans un congrès |
Titre |
en
Main Belt evolution in the context of adaptive-optics observations of large asteroids
|
Résumé |
en
According to the size-frequency distribution (SFD) of the Main Belt, there are approximately 4 times 105 small (D = 2-3 km) projectiles which determine the surface topography of large (D > 100 km) targets. Nowadays, the topography is accessible to adaptive-optics observations by the VLT/SPHERE/ZIMPOL instrument, which typically have a pixel scale 3 km and capability to resolve Dc = 30-40 km craters in suitably illuminated areas. We used statistical collisional models (Monte-Carlo) to compute intrinsic collisional probabilities, impact velocities, expected number of catastrophic collisions, numbers of cratering events, taking into account not only mean numbers but also their dispersion. Even within the Main Belt, collisional environment can be very different from target to target.
|
Auteur(s) |
Miroslav Broz
, Pavel Sevecek
, Pierre Vernazza
1
, Laurent Jorda
2
, Josef Hanus
, Michael Marsset
3
, Alexis Drouard
2
, Matti Viikinkoski
4
, Benoit Carry
5
, Franck Marchis
6
, Romain Fétick
7
, Thierry Fusco
2
, Mirel Birlan
8
1
LESIA -
Laboratoire d'études spatiales et d'instrumentation en astrophysique
( 1254 )
- 5, place Jules Janssen 92190 MEUDON
- France
2
LAM -
Laboratoire d'Astrophysique de Marseille
( 179944 )
- Pôle de l'Étoile Site de Château-Gombert 38, rue Frédéric Joliot-Curie 13388 Marseille cedex 13
- France
3
ARC -
Astrophysics Research Centre [Belfast]
( 166941 )
- School of Mathematics and Physics, QUB, Belfast, County Antrim BT7 INN
- Irlande
4
Department of Mathematics [Tampere]
( 174026 )
- Tampere University of Technology, PO Box 553, FI-33101 Tampere
- Finlande
5
ESAC -
European Space Astronomy Centre
( 231736 )
- Camino bajo del Castillo, s/n, Urbanización Villafranca del Castillo,, Villanueva de la Cañada, E-28692 Madrid
- Espagne
6
SETI -
Search for Extraterrestrial Intelligence Institute
( 519990 )
- Mountain View, CA 94043
- États-Unis
7
LAM -
Les Afriques dans le monde
( 230569 )
- 11, Allée Ausone 33607 PESSAC CEDEX
- France
8
IMCCE -
Institut de Mécanique Céleste et de Calcul des Ephémérides
( 153 )
- 77 av Denfert-Rochereau 75014 Paris
- France
|
Langue du document |
Anglais
|
Vulgarisation |
Non
|
Comité de lecture |
Oui
|
Invité |
Non
|
Audience |
Internationale
|
Actes |
Non
|
Titre du congrès |
EPSC-DPS2019
|
Date début congrès |
2019-09
|
Ville |
Geneve
|
Pays |
Suisse
|
Domaine(s) |
|
ADS Id | 2019EPSC...13.1925B |
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