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  1. Buch ; Online: Ejecta Evolution Following a Planned Impact into an Asteroid

    Kareta, Theodore / Thomas, Cristina / Li, Jian-Yang / Knight, Matthew M. / Moskovitz, Nicholas / Rozek, Agata / Bannister, Michele T. / Ieva, Simone / Snodgrass, Colin / Pravec, Petr / Ryan, Eileen V. / Ryan, William H. / Fahnestock, Eugene G. / Rivkin, Andrew S. / Chabot, Nancy / Fitzsimmons, Alan / Osip, David / Lister, Tim / Sarid, Gal /
    Hirabayashi, Masatoshi / Farnham, Tony / Tancredi, Gonzalo / Michel, Patrick / Wainscoat, Richard / Weryk, Rob / Burrati, Bonnie / Pittichova, Jana / Ridden-Harper, Ryan / Tan, Nicole J. / Tristram, Paul / Brown, Tyler / Bonavita, Mariangela / Burgdorf, Martin / Khalouei, Elahe / Longa, Penelope / Rabus, Markus / Sajadian, Sedighe / Jorgensen, Uffe Graae / Dominik, Martin / Kikwaya, Jean-Baptiste / Epifani, Elena Mazzotta / Dotto, Elisabetta / Deshapriya, J. D. Prasanna / Hasselmann, Pedro H. / Dall'Ora, Massimo / Abe, Lyu / Guillot, Tristan / Mekarnia, Djamel / Agabi, Abdelkrim / Bendjoya, Philippe / Suarez, Olga / Triaud, Amaury / Gasparetto, Thomas / Gunther, Maximillian N. / Kueppers, Michael / Merin, Bruno / Chatelain, Joseph / Gomez, Edward / Usher, Helen / Stoddard-Jones, Cai / Bartnik, Matthew / Bellaver, Michael / Chetan, Brenna / Dugan, Emma / Fallon, Tori / Fedewa, Jeremy / Gerhard, Caitlyn / Jacobson, Seth A. / Painter, Shane / Peterson, David-Michael / Rodriguez, Joseph E. / Smith, Cody / Sokolovsky, Kirill V. / Sullivan, Hannah / Townley, Kate / Watson, Sarah / Webb, Levi / Trigo-Rodrıguez, Josep M. / Llenas, Josep M. / Perez-Garcıa, Ignacio / Castro-Tirado, A. J. / Vincent, Jean-Baptiste / Migliorini, Alessandra / Lazzarin, Monica / La Forgia, Fiorangela / Ferrari, Fabio / Polakis, Tom / Skiff, Brian

    The First Five Weeks

    2023  

    Abstract: The impact of the DART spacecraft into Dimorphos, moon of the asteroid Didymos, changed Dimorphos' orbit substantially, largely from the ejection of material. We present results from twelve Earth-based facilities involved in a world-wide campaign to ... ...

    Abstract The impact of the DART spacecraft into Dimorphos, moon of the asteroid Didymos, changed Dimorphos' orbit substantially, largely from the ejection of material. We present results from twelve Earth-based facilities involved in a world-wide campaign to monitor the brightness and morphology of the ejecta in the first 35 days after impact. After an initial brightening of ~1.4 magnitudes, we find consistent dimming rates of 0.11-0.12 magnitudes/day in the first week, and 0.08-0.09 magnitudes/day over the entire study period. The system returned to its pre-impact brightness 24.3-25.3 days after impact through the primary ejecta tail remained. The dimming paused briefly eight days after impact, near in time to the appearance of the second tail. This was likely due to a secondary release of material after re-impact of a boulder released in the initial impact, through movement of the primary ejecta through the aperture likely played a role.

    Comment: 16 pages, 5 Figures, accepted in the Astrophysical Journal Letters (ApJL) on October 16, 2023
    Schlagwörter Astrophysics - Earth and Planetary Astrophysics
    Thema/Rubrik (Code) 306
    Erscheinungsdatum 2023-10-18
    Erscheinungsland us
    Dokumenttyp Buch ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

    Volltext online

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  2. Artikel ; Online: Variations in color and reflectance on the surface of asteroid (101955) Bennu.

    DellaGiustina, D N / Burke, K N / Walsh, K J / Smith, P H / Golish, D R / Bierhaus, E B / Ballouz, R-L / Becker, T L / Campins, H / Tatsumi, E / Yumoto, K / Sugita, S / Deshapriya, J D Prasanna / Cloutis, E A / Clark, B E / Hendrix, A R / Sen, A / Al Asad, M M / Daly, M G /
    Applin, D M / Avdellidou, C / Barucci, M A / Becker, K J / Bennett, C A / Bottke, W F / Brodbeck, J I / Connolly, H C / Delbo, M / de Leon, J / Drouet d'Aubigny, C Y / Edmundson, K L / Fornasier, S / Hamilton, V E / Hasselmann, P H / Hergenrother, C W / Howell, E S / Jawin, E R / Kaplan, H H / Le Corre, L / Lim, L F / Li, J Y / Michel, P / Molaro, J L / Nolan, M C / Nolau, J / Pajola, M / Parkinson, A / Popescu, M / Porter, N A / Rizk, B / Rizos, J L / Ryan, A J / Rozitis, B / Shultz, N K / Simon, A A / Trang, D / Van Auken, R B / Wolner, C W V / Lauretta, D S

    Science (New York, N.Y.)

    2020  Band 370, Heft 6517

    Abstract: Visible-wavelength color and reflectance provide information about the geologic history of planetary surfaces. Here we present multispectral images (0.44 to 0.89 micrometers) of near-Earth asteroid (101955) Bennu. The surface has variable colors overlain ...

    Abstract Visible-wavelength color and reflectance provide information about the geologic history of planetary surfaces. Here we present multispectral images (0.44 to 0.89 micrometers) of near-Earth asteroid (101955) Bennu. The surface has variable colors overlain on a moderately blue global terrain. Two primary boulder types are distinguishable by their reflectance and texture. Space weathering of Bennu surface materials does not simply progress from red to blue (or vice versa). Instead, freshly exposed, redder surfaces initially brighten in the near-ultraviolet region (i.e., become bluer at shorter wavelengths), then brighten in the visible to near-infrared region, leading to Bennu's moderately blue average color. Craters indicate that the time scale of these color changes is ~10
    Sprache Englisch
    Erscheinungsdatum 2020-10-08
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 128410-1
    ISSN 1095-9203 ; 0036-8075
    ISSN (online) 1095-9203
    ISSN 0036-8075
    DOI 10.1126/science.abc3660
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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