1. (704) Interamnia: A transitional object between a dwarf planet and a typical irregular-shaped minor body
- Author
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Dudziński, G., Podlewska-Gaca, E., Bartczak, P., Benseguane, S, Ferrais, M., Jorda, L., Hanuš, J., Vernazza, P., Rambaux, N., Carry, B., Marchis, F., Marsset, M., Viikinkoski, M., Brož, M., Fetick, R., Drouard, A., Fusco, T., Birlan, M., Jehin, E., Berthier, J., Castillo-Rogez, J., Cipriani, F., Colas, F., Dumas, C., Kryszczynska, A., Lamy, P., Le Coroller, H, Marciniak, A., Michalowski, T., Michel, P., Santana-Ros, T., Tanga, P., Vachier, F., Vigan, A., Witasse, O., Yang, Bin, Ďurech, J., Kaasalainen, M., Le Coroller, H., Ševeček, P., Dudzinski, G., DeMeo, F., Durech, J., Grice, J., Gillon, M., Benkhaldoun, Z., Szakats, R., Hirsch, R., Duffard, R., Chapman, A., Maestre, J., Carbognani, Albino, Barghini, D., Gardiol, D., Martino, M. Di, Valsecchi, G., Trivero, P., Buzzoni, A., Rasetti, S., Selvestrel, D., Knapic, C., Londero, E., Zorba, S., Volpicelli, C., Carlo, M. Di, Vaubaillon, J., Marmo, C., Valeri, D., Zanotti, F., Morini, M., Demaria, P., Zanda, B., Bouley, S., Rault, J., Maquet, L., Warner, B., Behrend, R., Asenjo, V., Berger, N., Bronikowska, M., Brothers, T., Charbonnel, S., Colazo, C., Coliac, J.-F., Jones, A., Leroy, A., Melia, R., Molina, D., Nadolny, J., Person, M., Pejcha, O., Riemis, H., Shappee, B., Sobkowiak, K., Soldán, F., Suys, D., Vantomme, J., Ministry of Education, Youth and Sports (Czech Republic), European Commission, National Aeronautics and Space Administration (US), National Centre for Research and Development (Poland), National Research, Development and Innovation Office (Hungary), Hungarian Academy of Sciences, Université de Liège, Centre National de la Recherche Scientifique (France), Gordon and Betty Moore Foundation, National Science Foundation (US), The Ohio State University, Chinese Academy of Sciences, Villum Fonden, Astronomical Institute of Charles University, Charles University [Prague], Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Tampere University of Technology [Tampere] (TUT), Space Sciences, Technologies and Astrophysics Research Institute (STAR), Institut de Mécanique Céleste et de Calcul des Ephémérides (IMCCE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Adam Mickiewicz University in Poznań (UAM), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), European Southern Observatory (ESO), European Space Astronomy Centre (ESAC), European Space Agency (ESA), Astrophysics Research Centre [Belfast] (ARC), Queen's University [Belfast] (QUB), Geneva Observatory, University of Geneva [Switzerland], Asociación Astronómica Astro Henares, Centro de Recursos Asociativos El Cerro, Institute of Geology [Poznan], Department of Earth, Atmospheric and Planetary Sciences [MIT, Cambridge] (EAPS), Massachusetts Institute of Technology (MIT), Association T60, Observatoire Midi-Pyrénées, Observatoire Midi-Pyrénées (OMP), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Observatorio Astronómico de Córdoba (OAC), Universidad Nacional de Córdoba [Argentina], Instituto de Astrofísica de Andalucía (IAA), Consejo Superior de Investigaciones Científicas [Spain] (CSIC), CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Departamento de Astrofísica [La laguna], Universidad de La Laguna [Tenerife - SP] (ULL), Department of Geological Sciences [Bloomington], Indiana University [Bloomington], Indiana University System-Indiana University System, Institute for Astronomy [Honolulu], University of Hawai‘i [Mānoa] (UHM), Astronomical Observatory [Poznan], Observatorio Amanecer de Arrakis, Konkoly Observatory, Research Centre for Astronomy and Earth Sciences [Budapest], Hungarian Academy of Sciences (MTA)-Hungarian Academy of Sciences (MTA), Laboratoire associé de Reconnaissance cellulaire et amélioration des plantes, Institut National de la Recherche Agronomique (INRA), Jet Propulsion Laboratory (JPL), California Institute of Technology (CALTECH)-NASA, European Space Research and Technology Centre (ESTEC), COMUE Université Côte d'Azur (2015 - 2019) (COMUE UCA), Department of Mathematics [Tampere], Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015 - 2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015 - 2019) (COMUE UCA)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015 - 2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Cosmologie, Astrophysique Stellaire & Solaire, de Planétologie et de Mécanique des Fluides (CASSIOPEE), 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, Northeastern University [Shenyang], Charles University [Prague] (CU), 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), 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), 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), SETI Institute, Center for Solar System Studies (CS3), Observatoire Astronomique de l'Université de Genève (ObsGE), Université de Genève = University of Geneva (UNIGE), Observatoire de Durtal, Consejo Superior de Investigaciones Científicas [Madrid] (CSIC), L'Uranoscope de l'Ile de France, Observatoire de Gretz-Armainvilliers, Anunaki Observatory, Thirty Meter Telescope Observatory, NASA-California Institute of Technology (CALTECH), Agence Spatiale Européenne = European Space Agency (ESA), Observatoire de la Côte d'Azur (OCA), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), PLANETO - LATMOS, 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)-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), Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA), 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), Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal, Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université de Genève (UNIGE), and 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)-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)
- Subjects
asteroids ,010504 meteorology & atmospheric sciences ,Dwarf planet ,Irregular shape ,Minor (linear algebra) ,FOS: Physical sciences ,Astrophysics ,01 natural sciences ,7. Clean energy ,law.invention ,Techniques: high angular resolution ,photometric ,Impact crater ,Methods: observational ,law ,Física Aplicada ,0103 physical sciences ,high angular resolutiontechniques ,observational [Methods] ,individual ,010303 astronomy & astrophysics ,ComputingMilieux_MISCELLANEOUS ,0105 earth and related environmental sciences ,(704) Interamnia -methods ,Earth and Planetary Astrophysics (astro-ph.EP) ,Physics ,[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph] ,Interamnia ,photometric [Techniques] ,observational -techniques ,Minor planets ,Astronomy and Astrophysics ,individual: (704) [Asteroids] ,Ellipsoid ,high angular resolution [Techniques] ,Space and Planetary Science ,Asteroid ,[SDU]Sciences of the Universe [physics] ,individual: (704) Interamnia [Minor planets, asteroids] ,Stellar occultation ,Asteroids: individual: (704) ,Hydrostatic equilibrium ,[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] ,Techniques: photometric ,Astrophysics - Earth and Planetary Astrophysics - Abstract
Full list of authors: Hanuš, J.; Vernazza, P.; Viikinkoski, M.; Ferrais, M.; Rambaux, N.; Podlewska-Gaca, E.; Drouard, A.; Jorda, L.; Jehin, E.; Carry, B.; Marsset, M.; Marchis, F.; Warner, B.; Behrend, R.; Asenjo, V.; Berger, N.; Bronikowska, M.; Brothers, T.; Charbonnel, S.; Colazo, C. Coliac, J. -F.; Duffard, R.; Jones, A.; Leroy, A.; Marciniak, A.; Melia, R.; Molina, D.; Nadolny, J.; Person, M.; Pejcha, O.; Riemis, H.; Shappee, B.; Sobkowiak, K.; Soldán, F.; Suys, D.; Szakats, R.; Vantomme, J.; Birlan, M.; Berthier, J.; Bartczak, P.; Dumas, C.; Dudziński, G.; Ďurech, J.; Castillo-Rogez, J.; Cipriani, F.; Fetick, R.; Fusco, T.; Grice, J.; Kaasalainen, M.; Kryszczynska, A.; Lamy, P.; Michalowski, T.; Michel, P.; Santana-Ros, T.; Tanga, P.; Vachier, F.; Vigan, A.; Witasse, O.; Yang, B., With an estimated diameter in the 320 350 km range, (704) Interamnia is the fifth largest main belt asteroid and one of the few bodies that fills the gap in size between the four largest bodies with D >400 km (Ceres, Vesta, Pallas and Hygiea) and the numerous smaller bodies with diameter 200 km. However, despite its large size, little is known about the shape and spin state of Interamnia and, therefore, about its bulk composition and past collisional evolution. Aims. We aimed to test at what size and mass the shape of a small body departs from a nearly ellipsoidal equilibrium shape (as observed in the case of the four largest asteroids) to an irregular shape as routinely observed in the case of smaller (D 200 km) bodies. Methods. We observed Interamnia as part of our ESO VLT/SPHERE large program (ID: 199.C-0074) at thirteen different epochs. In addition, several new optical lightcurves were recorded. These data, along with stellar occultation data from the literature, were fed to the All-Data Asteroid Modeling algorithm to reconstruct the 3D-shape model of Interamnia and to determine its spin state. Results. Interamnia s volume-equivalent diameter of 332 6 km implies a bulk density of = 1.98 0.68 g cm3, which suggests that Interamnia like Ceres and Hygiea contains a high fraction of water ice, consistent with the paucity of apparent craters. Our observations reveal a shape that can be well approximated by an ellipsoid, and that is compatible with a fluid hydrostatic equilibrium at the 2 level. Conclusions. The rather regular shape of Interamnia implies that the size and mass limit, under which the shapes of minor bodies with a high amount of water ice in the subsurface become irregular, has to be searched among smaller (D 300 km) less massive (m 3 1019 kg) bodies. © 2020 EDP Sciences. All rights reserved., This work has been supported by the Czech Science Foundation through grant 18-09470S (J.H., J.D.) and by the Charles University Research program No. UNCE/SCI/023. This research was supported by INTER-EXCELLENCE grant LTAUSA18093 from the Czech Ministry of Education, Youth, and Sports (J.H. and O.P.). The research of O.P. is additionally supported by Horizon 2020 ERC Starting Grant "Cat-In-hAT" (grant agreement #803158) and award PRIMUS/SCI/17 from Charles University. P.V., A.D., and B.C. were supported by CNRS/INSU/PNP. M.M. was supported by the National Aeronautics and Space Administration under Grant No. 80NSSC18K0849 issued through the Planetary Astronomy Program. This work was supported by the National Science Centre, Poland, through grant no. 2014/13/D/ST9/01818 (A.M.). The research leading to these results has received funding from the European Union's Horizon 2020 Research and Innovation Programme, under Grant Agreement no 687378 (SBNAF). This project has been supported by the GINOP-2.3.2-15-2016-00003 and NKFIH K125015 grants of the Hungarian National Research, Development and Innovation Office (NKFIH) and by the Lendulet grant LP2012-31 of the Hungarian Academy of Sciences. TRAPPIST-North is a project funded by the University of Liege, in collaboration with Cadi Ayyad University of Marrakech (Morocco). TRAPPIST-South is a project funded by the Belgian FNRS under grant FRFC 2.5.594.09. F.E.J. is a FNRS Senior Research Associate. ASAS-SN thanks the Las Cumbres Observatory and its staff for its continuing support of the ASAS-SN project. ASAS-SN is supported by the Gordon and Betty Moore Foundation through grant GBMF5490 to the Ohio State University and NSF grant AST-1515927. Development of ASAS-SN has been supported by NSF grant AST-0908816, the Mt. Cuba Astronomical Foundation, the Center for Cosmology and AstroParticle Physics at the Ohio State University, the Chinese Academy of Sciences South America Center for Astronomy (CASSACA), the Villum Foundation, and George Skestos.
- Published
- 2020
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