Ejecta from the DART-produced active asteroid Dimorphos

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Li, Jian-YangPlanetary Science Institute, Tucson, AZ, USA (author)

Ejecta from the DART-produced active asteroid Dimorphos

Article/chapterEnglish2023

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2023-03-01
Springer Nature,2023
electronicrdacarrier

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LIBRIS-ID:oai:DiVA.org:ltu-97032
https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-97032URI
https://doi.org/10.1038/s41586-023-05811-4DOI

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Language:English
Summary in:English

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Subject category:art swepub-publicationtype

Notes

Validerad;2023;Nivå 2;2023-12-12 (hanlid);For funding information see: https://doi.org/10.1038/s41586-023-05811-4;Full text license: CC BY
Some active asteroids have been proposed to be formed as a result of impact events1. Because active asteroids are generally discovered by chance only after their tails have fully formed, the process of how impact ejecta evolve into a tail has, to our knowledge, not been directly observed. The Double Asteroid Redirection Test (DART) mission of NASA2, in addition to having successfully changed the orbital period of Dimorphos3, demonstrated the activation process of an asteroid resulting from an impact under precisely known conditions. Here we report the observations of the DART impact ejecta with the Hubble Space Telescope from impact time T + 15 min to T + 18.5 days at spatial resolutions of around 2.1 km per pixel. Our observations reveal the complex evolution of the ejecta, which are first dominated by the gravitational interaction between the Didymos binary system and the ejected dust and subsequently by solar radiation pressure. The lowest-speed ejecta dispersed through a sustained tail that had a consistent morphology with previously observed asteroid tails thought to be produced by an impact4,5. The evolution of the ejecta after the controlled impact experiment of DART thus provides a framework for understanding the fundamental mechanisms that act on asteroids disrupted by a natural impact1,6.

Subject headings and genre

NATURVETENSKAP Fysik Astronomi, astrofysik och kosmologi hsv//swe
NATURAL SCIENCES Physical Sciences Astronomy, Astrophysics and Cosmology hsv//eng
Onboard Space Systems
Rymdtekniska system

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Hirabayashi, MasatoshiDepartment of Aerospace Engineering, Department of Geosciences, Auburn University, Auburn, AL, USA (author)
Farnham, Tony L.Department of Astronomy, University of Maryland, College Park, MD, USA (author)
Sunshine, Jessica M.Department of Astronomy, University of Maryland, College Park, MD, USA (author)
Knight, Matthew M.Physics Department, United States Naval Academy, Annapolis, MD, USA (author)
Tancredi, GonzaloDepartamento de Astronomía, Facultad de Ciencias, Udelar, Uruguay (author)
Moreno, FernandoInstituto de Astrofísica de Andalucía, CSIC, Granada, Spain (author)
Murphy, BrianUniversity of Edinburgh, Royal Observatory, Edinburgh, UK (author)
Opitom, CyrielleUniversity of Edinburgh, Royal Observatory, Edinburgh, UK (author)
Chesley, SteveJet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA (author)
Scheeres, Daniel J.Aerospace Engineering Sciences, Colorado Center for Astrodynamics Research, University of Colorado, Boulder, CO, USA (author)
Thomas, Cristina A.Northern Arizona University, Flagstaff, AZ, USA (author)
Fahnestock, Eugene G.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA (author)
Cheng, Andrew F.Applied Physics Laboratory, Johns Hopkins University, Laurel, MD, USA (author)
Dressel, LindaSpace Telescope Science Institute, Baltimore, MD, USA (author)
Ernst, Carolyn M.Applied Physics Laboratory, Johns Hopkins University, Laurel, MD, USA (author)
Ferrari, FabioDepartment of Aerospace Science and Technology, Politecnico di Milano, Milan, Italy (author)
Fitzsimmons, AlanSchool of Mathematics and Physics, Queen’s University Belfast, Belfast, UK (author)
Ieva, SimoneINAF - Osservatorio Astronomico di Roma, Rome, Italy (author)
Ivanovski, Stavro L.INAF Osservatorio Astronomico di Trieste, Trieste, Italy (author)
Kareta, TheodoreLowell Observatory, Flagstaff, AZ, USA; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA (author)
Kolokolova, LudmillaDepartment of Astronomy, University of Maryland, College Park, MD, USA (author)
Lister, TimLas Cumbres Observatory, Goleta, CA, USA (author)
Raducan, Sabina D.Space Research and Planetary Sciences, Physikalisches Institut, University of Bern, Bern, Switzerland (author)
Rivkin, Andrew S.Applied Physics Laboratory, Johns Hopkins University, Laurel, MD, USA (author)
Rossi, AlessandroIFAC-CNR, Florence, Italy (author)
Soldini, StefaniaDepartment of Mechanical, Materials and Aerospace Engineering, University of Liverpool, Liverpool, UK (author)
Stickle, Angela M.Applied Physics Laboratory, Johns Hopkins University, Laurel, MD, USA (author)
Vick, AlisonSpace Telescope Science Institute, Baltimore, MD, USA (author)
Vincent, Jean-BaptisteDLR Institute of Planetary Research, Berlin, Germany (author)
Weaver, Harold A.Applied Physics Laboratory, Johns Hopkins University, Laurel, MD, USA (author)
Bagnulo, StefanoArmagh Observatory and Planetarium, Armagh, UK (author)
Bannister, Michele T.School of Physical and Chemical Sciences, Te Kura Matū, University of Canterbury, Christchurch, New Zealand (author)
Cambioni, SaverioDepartment of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, USA (author)
Campo Bagatin, AdrianoInstituto de Física Aplicada a las Ciencias y las Tecnologías, Universidad de Alicante, Alicante, Spain; Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal, Universidad de Alicante, Alicante, Spain (author)
Chabot, Nancy L.Applied Physics Laboratory, Johns Hopkins University, Laurel, MD, USA (author)
Cremonese, GabrieleINAF Osservatorio Astronomico di Padova, Padua, Italy (author)
Daly, R. TerikApplied Physics Laboratory, Johns Hopkins University, Laurel, MD, USA (author)
Dotto, ElisabettaINAF - Osservatorio Astronomico di Roma, Rome, Italy (author)
Glenar, David A.Center for Space Science and Technology, University of Maryland, Baltimore County, Baltimore, MD, USA; Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD, USA (author)
Granvik, MikaelLuleå tekniska universitet,Rymdteknik,Department of Physics, University of Helsinki, Helsinki, Finland(Swepub:ltu)mikgra (author)
Hasselmann, Pedro H.INAF - Osservatorio Astronomico di Roma, Rome, Italy (author)
Herreros, IsabelCentro de Astrobiología (CAB), CSIC-INTA, Torrejón de Ardoz, Madrid, Spain (author)
Jacobson, SethDepartment of Earth and Environmental Sciences, Michigan State University, East Lansing, MI, USA (author)
Jutzi, MartinSpace Research and Planetary Sciences, Physikalisches Institut, University of Bern, Bern, Switzerland (author)
Kohout, TomasInstitute of Geology of the Czech Academy of Sciences, Prague, Czech Republic; Department of Geosciences and Geography, University of Helsinki, Helsinki, Finland (author)
La Forgia, FiorangelaDipartimento di Fisica e, Astronomia-Padova University, Padua, Italy (author)
Lazzarin, MonicaDipartimento di Fisica e, Astronomia-Padova University, Padua, Italy (author)
Lin, Zhong-YiInstitute of Astronomy, National Central University, Taoyuan City, Taiwan (author)
Lolachi, RaminCenter for Space Science and Technology, University of Maryland, Baltimore County, Baltimore, MD, USA; Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD, USA (author)
Lucchetti, AliceINAF Osservatorio Astronomico di Padova, Padua, Italy (author)
Makadia, RahilDepartment of Aerospace Engineering, University of Illinois Urbana-Champaign, Urbana, IL, USA (author)
Mazzotta Epifani, ElenaINAF - Osservatorio Astronomico di Roma, Rome, Italy (author)
Michel, PatrickLaboratoire Lagrange, Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Nice, France (author)
Migliorini, AlessandraINAF - Institute for Space Astrophysics and Planetology, Rome, Italy (author)
Moskovitz, Nicholas A.Lowell Observatory, Flagstaff, AZ, USA (author)
Ormö, JensCentro de Astrobiología (CAB), CSIC-INTA, Torrejón de Ardoz, Madrid, Spain (author)
Pajola, MaurizioINAF Osservatorio Astronomico di Padova, Padua, Italy (author)
Sánchez, PaulAerospace Engineering Sciences, Colorado Center for Astrodynamics Research, University of Colorado, Boulder, CO, USA (author)
Schwartz, Stephen R.Planetary Science Institute, Tucson, AZ, USA (author)
Snodgrass, ColinUniversity of Edinburgh, Royal Observatory, Edinburgh, UK (author)
Steckloff, JordanPlanetary Science Institute, Tucson, AZ, USA (author)
Stubbs, Timothy J.Solar System Exploration Division, NASA Goddard Space Flight Center, Greenbelt, MD, USA (author)
Trigo-Rodríguez, Josep M.Institute of Space Sciences (CSIC-IEEC), UAB Bellaterra, Barcelona, Spain (author)
Planetary Science Institute, Tucson, AZ, USADepartment of Aerospace Engineering, Department of Geosciences, Auburn University, Auburn, AL, USA (creator_code:org_t)

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By the author/editor: Li, Jian-Yang; Hirabayashi, Mas ...; Farnham, Tony L.; Sunshine, Jessic ...; Knight, Matthew ...; Tancredi, Gonzal ...; show more...; Moreno, Fernando; Murphy, Brian; Opitom, Cyrielle; Chesley, Steve; Scheeres, Daniel ...; Thomas, Cristina ...; Fahnestock, Euge ...; Cheng, Andrew F.; Dressel, Linda; Ernst, Carolyn M ...; Ferrari, Fabio; Fitzsimmons, Ala ...; Ieva, Simone; Ivanovski, Stavr ...; Kareta, Theodore; Kolokolova, Ludm ...; Lister, Tim; Raducan, Sabina ...; Rivkin, Andrew S ...; Rossi, Alessandr ...; Soldini, Stefani ...; Stickle, Angela ...; Vick, Alison; Vincent, Jean-Ba ...; Weaver, Harold A ...; Bagnulo, Stefano; Bannister, Miche ...; Cambioni, Saveri ...; Campo Bagatin, A ...; Chabot, Nancy L.; Cremonese, Gabri ...; Daly, R. Terik; Dotto, Elisabett ...; Glenar, David A.; Granvik, Mikael; Hasselmann, Pedr ...; Herreros, Isabel; Jacobson, Seth; Jutzi, Martin; Kohout, Tomas; La Forgia, Fiora ...; Lazzarin, Monica; Lin, Zhong-Yi; Lolachi, Ramin; Lucchetti, Alice; Makadia, Rahil; Mazzotta Epifani ...; Michel, Patrick; Migliorini, Ales ...; Moskovitz, Nicho ...; Ormö, Jens; Pajola, Maurizio; Sánchez, Paul; Schwartz, Stephe ...; Snodgrass, Colin; Steckloff, Jorda ...; Stubbs, Timothy ...; Trigo-Rodríguez, ...; show less...

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