1. Volume uncertainty of (7) Iris shape models from disc-resolved images
- Author
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Laurent Jorda, P. Michel, Miroslav Brož, Michael Marsset, P. Bartczak, H. Le Coroller, Jérôme Berthier, Matti Viikinkoski, Paolo Tanga, Marin Ferrais, Benoit Carry, Arthur Vigan, Bin Yang, Pierre Vernazza, P. L. Lamy, Christophe Dumas, Tadeusz Michalowski, Toni Santana-Ros, Alexis Drouard, Romain Fétick, Grzegorz Dudziński, Julie Castillo-Rogez, M. Birlan, F. Vachier, S. Benseguane, Thierry Fusco, Agnieszka Kryszczyńska, E. Podlewska-Gaca, Fabrice Cipriani, Olivier Witasse, F. Marchis, Josef Hanus, Nicolas Rambaux, Emmanuel Jehin, A. Marciniak, François Colas, Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal, Adam Mickiewicz University in Poznań (UAM), Astronomical Observatory [Poznan], Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement (LGL-TPE), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet - Saint-Étienne (UJM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Charles University [Prague] (CU), Institute of Astronomy [Prague], Institut de Mécanique Céleste et de Calcul des Ephémérides (IMCCE), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Lille-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA), SETI Institute, Department of Earth, Atmospheric and Planetary Sciences [MIT, Cambridge] (EAPS), Massachusetts Institute of Technology (MIT), University of Tampere [Finland], Astronomical Institute of Romanian Academy, Romanian Academy, Space Sciences, Technologies and Astrophysics Research Institute (STAR), Université de Liège, Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), European Space Research and Technology Centre (ESTEC), Agence Spatiale Européenne = European Space Agency (ESA), TMT International Observatory, Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Departamento de Fisica, Ingenieria de Sistemas y Teoria de la Señal [Alicante] (DFESTS), Universidad de Alicante, Institut de Ciencies del Cosmos (ICCUB), Universitat de Barcelona (UB), European Southern Observatory [Santiago] (ESO), European Southern Observatory (ESO), European Project: 871149,EPN2024-RI, Czech Science Foundation, European Commission, Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement [Lyon] (LGL-TPE), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École normale supérieure - Lyon (ENS Lyon), Sorbonne Université (SU)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), and Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France
- Subjects
asteroids ,Surface (mathematics) ,Solar System ,010504 meteorology & atmospheric sciences ,photometric -minor planets ,Instrumentation ,01 natural sciences ,Física Aplicada ,0103 physical sciences ,medicine ,Angular resolution ,individual ,Iris (anatomy) ,Adaptive optics ,010303 astronomy & astrophysics ,individual: (7) Iris [Minor planets, asteroids] ,0105 earth and related environmental sciences ,Remote sensing ,instrumentation ,Physics ,numerical [Methods] ,[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] ,photometric [Techniques] ,Astronomy and Astrophysics ,adaptive optics -methods ,Light curve ,adaptive optics [Instrumentation] ,numerical -techniques ,medicine.anatomical_structure ,Space and Planetary Science ,Asteroid ,Astrophysics::Earth and Planetary Astrophysics - Abstract
High angular resolution disc-resolved images of (7) Iris collected by VLT/SPHERE instrument are allowed for the detailed shape modelling of this large asteroid revealing its surface features. If (7) Iris did not suffer any events catastrophic enough to disrupt the body (which is very likely) by studying its topography, we might get insights into the early Solar system’s collisional history. When it comes to internal structure and composition, thoroughly assessing the volume and density uncertainties is necessary. In this work, we propose a method of uncertainty calculation of asteroid shape models based on light curve and adaptive optics (AO) images. We apply this method on four models of (7) Iris produced from independent Shaping Asteroids using Genetic Evolution and All-Data Asteroid Modelling inversion techniques and multiresolution photoclinometry by deformation. Obtained diameter uncertainties stem from both the observations from which the models were scaled and the models themselves. We show that despite the availability of high-resolution AO images, the volume and density of (7) Iris have substantial error bars that were underestimated in the previous studies., This work has been supported by the Czech Science Foundation through grant 20-08218S (JH, MB) and by the Charles University Research program No. UNCE/SCI/023. This work has been partially supported by Horizon 2020 grant no. 871149 ‘EPN-2024-RI’.
- Published
- 2020
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