Search

Your search keyword '"Keller LP"' showing total 29 results
Start Over Author "Keller LP"
29 results on '"Keller LP"'

1. Craters, boulders and regolith of (101955) Bennu indicative of an old and dynamic surface

Author

Walsh, KJ, Jawin, ER, Ballouz, R-L, Barnouin, OS, Bierhaus, EB, Jr, CHC, Molaro, JL, McCoy, TJ, Delbo', M, Hartzell, CM, Pajola, M, Schwartz, SR, Trang, D, Asphaug, E, Becker, KJ, Beddingfield, CB, Bennett, CA, Bottke, WF, Burke, KN, Clark, BC, Daly, MG, Dellagiustina, DN, Dworkin, JP, Elder, CM, Golish, DR, Hildebrand, AR, Malhotra, R, Marshall, J, Michel, P, Nolan, MC, Perry, ME, Rizk, B, Ryan, A, Sandford, SA, Scheeres, DJ, Susorney, HCM, Thuillet, F, Lauretta, DS, Highsmith, DE, Small, J, Vokrouhlicky, D, Bowles, NE, Brown, E, Hanna, KLD, Warren, T, Brunet, C, Chicoine, RA, Desjardins, S, Gaudreau, D, Haltigin, T, Millington-Veloza, S, Rubi, A, Aponte, J, Gorius, N, Lunsford, A, Allen, B, Grindlay, J, Guevel, D, Hoak, D, Hong, J, Schrader, DL, Bayron, J, Golubov, O, Sanchez, P, Stromberg, J, Hirabayashi, M, Oliver, S, Rascon, M, Harch, A, Joseph, J, Squyres, S, Richardson, D, Emery, JP, McGraw, L, Ghent, R, Binzel, RP, Asad, MM, Johnson, CL, Philpott, L, Cloutis, EA, Hanna, RD, Ciceri, F, Ibrahim, E-M, Breitenfeld, L, Glotch, T, Rogers, AD, Clark, BE, Ferrone, S, Thomas, CA, Campins, H, Fernandez, Y, Chang, W, Cheuvront, A, Tachibana, S, Yurimoto, H, Brucato, JR, Poggiali, G, Dotto, E, Epifani, EM, Crombie, MK, Lantz, C, Izawa, MRM, De Leon, J, Licandro, J, Garcia, JLR, Clemett, S, Thomas-Keprta, K, Van Wal, S, Yoshikawa, M, Bellerose, J, Bhaskaran, S, Boyles, C, Chesley, SR, Farnocchia, D, Harbison, A, Kennedy, B, Knight, A, Martinez-Vlasoff, N, Mastrodemos, N, McElrath, T, Owen, W, Park, R, Rush, B, Swanson, L, Takahashi, Y, Velez, D, Yetter, K, Thayer, C, Adam, C, Antreasian, P, Bauman, J, Bryan, C, Carcich, B, Corvin, M, Geeraert, J, Hoffman, J, Leonard, JM, Lessac-Chenen, E, Levine, A, McAdams, J, McCarthy, L, Nelson, D, Page, B, Pelgrift, J, Sahr, E, Stakkestad, K, Stanbridge, D, Wibben, D, Williams, B, Williams, K, Wolff, P, Hayne, P, Kubitschek, D, Barucci, MA, Deshapriya, JDP, Fornasier, S, Fulchignoni, M, Hasselmann, P, Merlin, F, Praet, A, Billett, O, Boggs, A, Buck, B, Carlson-Kelly, S, Cerna, J, Chaffin, K, Church, E, Coltrin, M, Daly, J, Deguzman, A, Dubisher, R, Eckart, D, Ellis, D, Falkenstern, P, Fisher, A, Fisher, ME, Fleming, P, Fortney, K, Francis, S, Freund, S, Gonzales, S, Haas, P, Hasten, A, Hauf, D, Hilbert, A, Howell, D, Jaen, F, Jayakody, N, Jenkins, M, Johnson, K, Lefevre, M, Ma, H, Mario, C, Martin, K, May, C, McGee, M, Miller, B, Miller, C, Miller, G, Mirfakhrai, A, Muhle, E, Norman, C, Olds, R, Parish, C, Ryle, M, Schmitzer, M, Sherman, P, Skeen, M, Susak, M, Sutter, B, Tran, Q, Welch, C, Witherspoon, R, Wood, J, Zareski, J, Arvizu-Jakubicki, M, Audi, E, Bandrowski, R, Becker, TL, Bendall, S, Bloomenthal, H, Blum, D, Boynton, WV, Brodbeck, J, Chojnacki, M, Colpo, A, Contreras, J, Cutts, J, D'Aubigny, CYD, Dean, D, Diallo, B, Drinnon, D, Drozd, K, Enos, HL, Enos, R, Fellows, C, Ferro, T, Fisher, MR, Fitzgibbon, G, Fitzgibbon, M, Forelli, J, Forrester, T, Galinsky, I, Garcia, R, Gardner, A, Habib, N, Hamara, D, Hammond, D, Hanley, K, Harshman, K, Hergenrother, CW, Herzog, K, Hill, D, Hoekenga, C, Hooven, S, Howell, ES, Huettner, E, Janakus, A, Jones, J, Kareta, TR, Kidd, J, Kingsbury, K, Balram-Knutson, SS, Koelbel, L, Kreiner, J, Lambert, D, Lewin, C, Lovelace, B, Loveridge, M, Lujan, M, Maleszewski, CK, Marchese, K, McDonough, E, Mogk, N, Morrison, V, Morton, E, Munoz, R, Nelson, J, Padilla, J, Pennington, R, Polit, A, Ramos, N, Reddy, V, Riehl, M, Roper, HL, Salazar, S, Selznick, S, Shultz, N, Smith, PH, Stewart, S, Sutton, S, Swindle, T, Tang, YH, Westermann, M, Wolner, CWV, Worden, D, Zega, T, Zeszut, Z, Bjurstrom, A, Bloomquist, L, Dickinson, C, Keates, E, Liang, J, Nifo, V, Taylor, A, Teti, F, Caplinger, M, Bowles, H, Carter, S, Dickenshied, S, Doerres, D, Fisher, T, Hagee, W, Hill, J, Miner, M, Noss, D, Piacentine, N, Smith, M, Toland, A, Wren, P, Bernacki, M, Munoz, DP, Watanabe, S-I, Aqueche, A, Ashman, B, Barker, M, Bartels, A, Berry, K, Bos, B, Burns, R, Calloway, A, Carpenter, R, Castro, N, Cosentino, R, Donaldson, J, Cook, JE, Emr, C, Everett, D, Fennell, D, Fleshman, K, Folta, D, Gallagher, D, Garvin, J, Getzandanner, K, Glavin, D, Hull, S, Hyde, K, Ido, H, Ingegneri, A, Jones, N, Kaotira, P, Lim, LF, Liounis, A, Lorentson, C, Lorenz, D, Lyzhoft, J, Mazarico, EM, Mink, R, Moore, W, Moreau, M, Mullen, S, Nagy, J, Neumann, G, Nuth, J, Poland, D, Reuter, DC, Rhoads, L, Rieger, S, Rowlands, D, Sallitt, D, Scroggins, A, Shaw, G, Simon, AA, Swenson, J, Vasudeva, P, Wasser, M, Zellar, R, Grossman, J, Johnston, G, Morris, M, Wendel, J, Burton, A, Keller, LP, McNamara, L, Messenger, S, Nakamura-Messenger, K, Nguyen, A, Righter, K, Queen, E, Bellamy, K, Dill, K, Gardner, S, Giuntini, M, Key, B, Kissell, J, Patterson, D, Vaughan, D, Wright, B, Gaskell, RW, Le Corre, L, Li, J-Y, Palmer, EE, Siegler, MA, Tricarico, P, Weirich, JR, Zou, X-D, Ireland, T, Tait, K, Bland, P, Anwar, S, Bojorquez-Murphy, N, Christensen, PR, Haberle, CW, Mehall, G, Rios, K, Franchi, I, Rozitis, B, Brack, DN, French, AS, McMahon, JW, Russell, S, Killgore, M, Hamilton, VE, Kaplan, HH, Bandfield, JL, Chodas, M, Lambert, M, Masterson, RA, Freemantle, J, Seabrook, JA, Craft, K, Daly, RT, Ernst, C, Espiritu, RC, Holdridge, M, Jones, M, Nair, AH, Nguyen, L, Peachey, J, Plescia, J, Roberts, JH, Steele, R, Turner, R, Backer, J, Edmundson, K, Mapel, J, Milazzo, M, Sides, S, Manzoni, C, May, B, Delbo, M, Libourel, G, Marty, B, Team, O-R, Centro di Ateneo di Studi e Attività Spaziali 'Giuseppe Colombo' (CISAS), Universita degli Studi di Padova, Laboratoire de Géophysique Interne et Tectonophysique (LGIT), Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Laboratoire Central des Ponts et Chaussées (LCPC)-Institut des Sciences de la Terre (ISTerre), Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-PRES Université de Grenoble-Institut de recherche pour le développement [IRD] : UR219-Institut national des sciences de l'Univers (INSU - CNRS)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)-PRES Université de Grenoble-Institut de recherche pour le développement [IRD] : UR219-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR), ASU School of Earth and Space Exploration (SESE), Arizona State University [Tempe] (ASU), IHU-LIRYC, Université Bordeaux Segalen - Bordeaux 2-CHU Bordeaux [Bordeaux], NASA Goddard Space Flight Center (GSFC), National Dairy Research Institute, SETI Institute, Institute of Northern Engineering, 455 Duckering Bldg, Lunar and Planetary Laboratory [Tucson] (LPL), University of Arizona, Centre de Mise en Forme des Matériaux (CEMEF), Centre National de la Recherche Scientifique (CNRS)-PSL Research University (PSL)-MINES ParisTech - École nationale supérieure des mines de Paris, Institut des Sciences de la Terre (ISTerre), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de recherche pour le développement [IRD] : UR219-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), and ANR-15-IDEX-0001,UCA JEDI,Idex UCA JEDI(2015)

Subjects
Near-Earth object, 010504 meteorology & atmospheric sciences, Mass movement, [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], Geomorphology, 010502 geochemistry & geophysics, 01 natural sciences, Billion years, Regolith, Astrobiology, [SPI]Engineering Sciences [physics], Asteroids comets and Kuiper belt, Impact crater, Asteroid, General Earth and Planetary Sciences, Asteroid belt, Early solar system, Geology, 0105 earth and related environmental sciences
Abstract

著者人数: 38名ほか (The OSIRIS-REx Team: 所属. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS): Van wal, S; 吉川, 真; 渡邊, 誠一郎), Number of authors: 38 and The OSIRIS-REx Team (Affiliation. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS): Van wal, S; Yoshikawa, Makoto; Watanabe, Sei-icihro), Accepted: 2019-02-11, 資料番号: SA1190038000

Published
2019

2. Evidence for widespread hydrated minerals on asteroid (101955) Bennu

Author

Hamilton, VE, Simon, AA, Christensen, PR, Reuter, DC, Clark, BE, Barucci, MA, Bowles, NE, Boynton, WV, Brucato, JR, Cloutis, EA, Jr, CHC, Hannah, KLD, Emery, JP, Enos, HL, Fornasier, S, Haberle, CW, Hanna, RD, Howell, ES, Kaplan, HH, Keller, LP, Lantz, C, Li, J-Y, Lim, LF, McCoy, TJ, Merlins, F, Nolan, MC, Praet, A, Rozitis, B, Sandford, SA, Schrader, DL, Thomas, CA, Zou, X-D, Lauretta, DS, Highsmith, DE, Small, J, Vokrouhlicky, D, Brown, E, Warren, T, Brunet, C, Chicoine, RA, Desjardins, S, Gaudreau, D, Haltigin, T, Millington-Veloza, S, Rubi, A, Aponte, J, Gorius, N, Lunsford, A, Allen, B, Grindlay, J, Guevel, D, Hoak, D, Hong, J, Bayron, J, Golubov, O, Sanchez, P, Stromberg, J, Hirabayashi, M, Hartzell, CM, Oliver, S, Rascon, M, Harch, A, Joseph, J, Squyres, S, Richardson, D, McGraw, L, Ghent, R, Binzel, RP, Al Asad, MM, Johnson, CL, Philpott, L, Susorney, HCM, Ciceri, F, Hildebrand, AR, Ibrahim, E-M, Breitenfeld, L, Glotch, T, Rogers, AD, Ferrone, S, Campins, H, Fernandez, Y, Chang, W, Cheuvront, A, Trang, D, Tachibana, S, Yurimoto, H, Poggiali, G, Pajola, M, Dotto, E, Epifani, EM, Crombie, MK, Izawa, MRM, De Leon, J, Licandro, J, Garcia, JLR, Clemett, S, Thomas-Keprta, K, Van Wal, S, Yoshikawa, M, Bellerose, J, Bhaskaran, S, Boyles, C, Chesley, SR, Elder, CM, Farnocchia, D, Harbison, A, Kennedy, B, Knight, A, Martinez-Vlasoff, N, Mastrodemos, N, McElrath, T, Owen, W, Park, R, Rush, B, Swanson, L, Takahashi, Y, Velez, D, Yetter, K, Thayer, C, Adam, C, Antreasian, P, Bauman, J, Bryan, C, Carcich, B, Corvin, M, Geeraert, J, Hoffman, J, Leonard, JM, Lessac-Chenen, E, Levine, A, McAdams, J, McCarthy, L, Nelson, D, Page, B, Pelgrift, J, Sahr, E, Stakkestad, K, Stanbridge, D, Wibben, D, Williams, B, Williams, K, Wolff, P, Hayne, P, Kubitschek, D, Deshapriya, JDP, Fulchignoni, M, Hasselmann, P, Merlin, F, Bierhaus, EB, Billett, O, Boggs, A, Buck, B, Carlson-Kelly, S, Cerna, J, Chaffin, K, Church, E, Coltrin, M, Daly, J, Deguzman, A, Dubisher, R, Eckart, D, Ellis, D, Falkenstern, P, Fisher, A, Fisher, ME, Fleming, P, Fortney, K, Francis, S, Freund, S, Gonzales, S, Haas, P, Hasten, A, Hauf, D, Hilbert, A, Howell, D, Jaen, F, Jayakody, N, Jenkins, M, Johnson, K, Lefevre, M, Ma, H, Mario, C, Martin, K, May, C, McGee, M, Miller, B, Miller, C, Miller, G, Mirfakhrai, A, Muhle, E, Norman, C, Olds, R, Parish, C, Ryle, M, Schmitzer, M, Sherman, P, Skeen, M, Susak, M, Sutter, B, Tran, Q, Welch, C, Witherspoon, R, Wood, J, Zareski, J, Arvizu-Jakubicki, M, Asphaug, E, Audi, E, Ballouz, R-L, Bandrowski, R, Becker, KJ, Becker, TL, Bendall, S, Bennett, CA, Bloomenthal, H, Blum, D, Brodbeck, J, Burke, KN, Chojnacki, M, Colpo, A, Contreras, J, Cutts, J, D'Aubigny, CYD, Dean, D, Dellagiustina, DN, Diallo, B, Drinnon, D, Drozd, K, Enos, R, Fellows, C, Ferro, T, Fisher, MR, Fitzgibbon, G, Fitzgibbon, M, Forelli, J, Forrester, T, Galinsky, I, Garcia, R, Gardner, A, Golish, DR, Habib, N, Hamara, D, Hammond, D, Hanley, K, Harshman, K, Hergenrother, CW, Herzog, K, Hill, D, Hoekenga, C, Hooven, S, Huettner, E, Janakus, A, Jones, J, Kareta, TR, Kidd, J, Kingsbury, K, Balram-Knutson, SS, Koelbel, L, Kreiner, J, Lambert, D, Lewin, C, Lovelace, B, Loveridge, M, Lujan, M, Maleszewski, CK, Malhotra, R, Marchese, K, McDonough, E, Mogk, N, Morrison, V, Morton, E, Munoz, R, Nelson, J, Padilla, J, Pennington, R, Polit, A, Ramos, N, Reddy, V, Riehl, M, Rizk, B, Roper, HL, Salazar, S, Schwartz, SR, Selznick, S, Shultz, N, Smith, PH, Stewart, S, Sutton, S, Swindle, T, Tang, YH, Westermann, M, Wolner, CWV, Worden, D, Zega, T, Zeszut, Z, Bjurstrom, A, Bloomquist, L, Dickinson, C, Keates, E, Liang, J, Nifo, V, Taylor, A, Teti, F, Caplinger, M, Bowles, H, Carter, S, Dickenshied, S, Doerres, D, Fisher, T, Hagee, W, Hill, J, Miner, M, Noss, D, Piacentine, N, Smith, M, Toland, A, Wren, P, Bernacki, M, Munoz, DP, Watanabe, S-I, Aqueche, A, Ashman, B, Barker, M, Bartels, A, Berry, K, Bos, B, Burns, R, Calloway, A, Carpenter, R, Castro, N, Cosentino, R, Donaldson, J, Dworkin, JP, Cook, JE, Emr, C, Everett, D, Fennell, D, Fleshman, K, Folta, D, Gallagher, D, Garvin, J, Getzandanner, K, Glavin, D, Hull, S, Hyde, K, Ido, H, Ingegneri, A, Jones, N, Kaotira, P, Liounis, A, Lorentson, C, Lorenz, D, Lyzhoft, J, Mazarico, EM, Mink, R, Moore, W, Moreau, M, Mullen, S, Nagy, J, Neumann, G, Nuth, J, Poland, D, Rhoads, L, Rieger, S, Rowlands, D, Sallitt, D, Scroggins, A, Shaw, G, Swenson, J, Vasudeva, P, Wasser, M, Zellar, R, Grossman, J, Johnston, G, Morris, M, Wendel, J, Burton, A, McNamara, L, Messenger, S, Nakamura-Messenger, K, Nguyen, A, Righter, K, Queen, E, Bellamy, K, Dill, K, Gardner, S, Giuntini, M, Key, B, Kissell, J, Patterson, D, Vaughan, D, Wright, B, Gaskell, RW, Le Corre, L, Molaro, JL, Palmer, EE, Siegler, MA, Tricarico, P, Weirich, JR, Ireland, T, Tait, K, Bland, P, Anwar, S, Bojorquez-Murphy, N, Mehall, G, Rios, K, Franchi, I, Beddingfield, CB, Marshall, J, Brack, DN, French, AS, McMahon, JW, Scheeres, DJ, Jawin, ER, Russell, S, Killgore, M, Bottke, WF, Walsh, KJ, Bandfield, JL, Clark, BC, Chodas, M, Lambert, M, Masterson, RA, Daly, MG, Freemantle, J, Seabrook, JA, Barnouin, OS, Craft, K, Daly, RT, Ernst, C, Espiritu, RC, Holdridge, M, Jones, M, Nair, AH, Nguyen, L, Peachey, J, Perry, ME, Plescia, J, Roberts, JH, Steele, R, Turner, R, Backer, J, Edmundson, K, Mapel, J, Milazzo, M, Sides, S, Manzoni, C, May, B, Delbo, M, Libourel, G, Michel, P, Ryan, A, Thuillet, F, Marty, B, Team, O-R, Southwest Research Institute [Boulder] (SwRI), ASU School of Earth and Space Exploration (SESE), Arizona State University [Tempe] (ASU), NASA Goddard Space Flight Center (GSFC), Ithaca College, Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)), 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 Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Department of Atmospheric, Oceanic and Planetary Physics [Oxford] (AOPP), University of Oxford, Lunar and Planetary Laboratory [Tucson] (LPL), University of Arizona, INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto Nazionale di Astrofisica (INAF), Department of Geography [Winnipeg], University of Winnipeg, Department of Physics, Rowan University, Glassboro, Rowan University, Department of Earth and Planetary Sciences [Knoxville], The University of Tennessee [Knoxville], Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin [Austin], The Swiss Light Source (SLS) (SLS-PSI), Paul Scherrer Institute (PSI), NASA Johnson Space Center (JSC), NASA, Institut d'astrophysique spatiale (IAS), Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National d’Études Spatiales [Paris] (CNES), Université Paris-Sud - Paris 11 (UP11), Planetary Science Institute [Tucson] (PSI), Smithsonian Institution, National Museum of Natural History, Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-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 Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), The Open University [Milton Keynes] (OU), NASA Ames Research Center Cooperative for Research in Earth Science in Technology (ARC-CREST), NASA Ames Research Center (ARC), Center for Meteorite Studies [Tempe], Northern Arizona University [Flagstaff], Centre de Mise en Forme des Matériaux (CEMEF), Mines Paris - PSL (École nationale supérieure des mines de Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), University of Oxford [Oxford], Université Paris-Sud - Paris 11 (UP11)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Paris Sud Orsay, and MINES ParisTech - École nationale supérieure des mines de Paris

Subjects
Mineral hydration, Thermal infrared, 010504 meteorology & atmospheric sciences, Comets and Kuiper belt, Astronomy and Astrophysics, Mineralogy, 01 natural sciences, Article, Asteroids, Astrobiology, [SPI.MAT]Engineering Sciences [physics]/Materials, [SPI]Engineering Sciences [physics], Asteroid, Chondrite, Meteoritics, 0103 physical sciences, Early solar system, Spectral data, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], 010303 astronomy & astrophysics, Geology, 0105 earth and related environmental sciences
Abstract

著者人数: 33名ほか (The OSIRIS-REx Team: 所属. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS): Van wal, S; 吉川, 真; 渡邊, 誠一郎), Number of authors: 33 and The OSIRIS-REx Team (Affiliation. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS): Van wal, S; Yoshikawa, Makoto; Watanabe, Sei-icihro), Accepted: 2019-02-12, 資料番号: SA1190036000

Published
2019

3. The dynamic geophysical environment of (101955) Bennu based on OSIRIS-REx measurements

Author

Scheeres, DJ, McMahon, JW, French, AS, Brack, DN, Chesley, SR, Farnocchia, D, Takahashi, Y, Leonard, JM, Geeraert, J, Page, B, Antreasian, P, Getzandanner, K, Rowlands, D, Mazarico, EM, Small, J, Highsmith, DE, Moreau, M, Emery, JP, Rozitis, B, Hirabayashi, M, Sanchez, P, Van Wal, S, Tricarico, P, Ballouz, R-L, Johnson, CL, Asad, MM, Susorney, HCM, Barnouin, OS, Daly, MG, Seabrook, JA, Gaskell, RW, Palmer, EE, Weirich, JR, Walsh, KJ, Jawin, ER, Bierhaus, EB, Michel, P, Bottke, WF, Nolan, MC, Jr, CHC, Lauretta, DS, Vokrouhlicky, D, Bowles, NE, Brown, E, Hanna, KLD, Warren, T, Brunet, C, Chicoine, RA, Desjardins, S, Gaudreau, D, Haltigin, T, Millington-Veloza, S, Rubi, A, Aponte, J, Gorius, N, Lunsford, A, Allen, B, Grindlay, J, Guevel, D, Hoak, D, Hong, J, Schrader, DL, Bayron, J, Golubov, O, Stromberg, J, Hartzell, CM, Oliver, S, Rascon, M, Harch, A, Joseph, J, Squyres, S, Richardson, D, McGraw, L, Ghent, R, Binzel, RP, Philpott, L, Cloutis, EA, Hanna, RD, Ciceri, F, Hildebrand, AR, Ibrahim, E-M, Breitenfeld, L, Glotch, T, Rogers, AD, Clark, BE, Ferrone, S, Thomas, CA, Campins, H, Fernandez, Y, Chang, W, Cheuvront, A, Trang, D, Tachibana, S, Yurimoto, H, Brucato, JR, Poggiali, G, Pajola, M, Dotto, E, Epifani, EM, Crombie, MK, Lantz, C, Izawa, MRM, De Leon, J, Licandro, J, Garcia, JL, Clemett, S, Thomas-Keprta, K, Yoshikawa, M, Bellerose, J, Bhaskaran, S, Boyles, C, Elder, CM, Harbison, A, Kennedy, B, Knight, A, Martinez-Vlasoff, N, Mastrodemos, N, McElrath, T, Owen, W, Park, R, Rush, B, Swanson, L, Velez, D, Yetter, K, Thayer, C, Adam, C, Bauman, J, Bryan, C, Carcich, B, Corvin, M, Hoffman, J, Lessac-Chenen, E, Levine, A, McAdams, J, McCarthy, L, Nelson, D, Pelgrift, J, Sahr, E, Stakkestad, K, Stanbridge, D, Wibben, D, Williams, B, Williams, K, Wolff, P, Hayne, P, Kubitschek, D, Barucci, MA, Deshapriya, JDP, Fornasier, S, Fulchignoni, M, Hasselmann, P, Merlin, F, Praet, A, Billett, O, Boggs, A, Buck, B, Carlson-Kelly, S, Cerna, J, Chaffin, K, Church, E, Coltrin, M, Daly, J, Deguzman, A, Dubisher, R, Eckart, D, Ellis, D, Falkenstern, P, Fisher, A, Fisher, ME, Fleming, P, Fortney, K, Francis, S, Freund, S, Gonzales, S, Haas, P, Hasten, A, Hauf, D, Hilbert, A, Howell, D, Jaen, F, Jayakody, N, Jenkins, M, Johnson, K, Lefevre, M, Ma, H, Mario, C, Martin, K, May, C, McGee, M, Miller, B, Miller, C, Miller, G, Mirfakhrai, A, Muhle, E, Norman, C, Olds, R, Parish, C, Ryle, M, Schmitzer, M, Sherman, P, Skeen, M, Susak, M, Sutter, B, Tran, Q, Welch, C, Witherspoon, R, Wood, J, Zareski, J, Arvizu-Jakubicki, M, Asphaug, E, Audi, E, Bandrowski, R, Becker, KJ, Becker, TL, Bendall, S, Bennett, CA, Bloomenthal, H, Blum, D, Boynton, WV, Brodbeck, J, Burke, KN, Chojnacki, M, Colpo, A, Contreras, J, Cutts, J, D'Aubigny, CYD, Dean, D, Dellagiustina, DN, Diallo, B, Drinnon, D, Drozd, K, Enos, HL, Enos, R, Fellows, C, Ferro, T, Fisher, MR, Fitzgibbon, G, Fitzgibbon, M, Forelli, J, Forrester, T, Galinsky, I, Garcia, R, Gardner, A, Golish, DR, Habib, N, Hamara, D, Hammond, D, Hanley, K, Harshman, K, Hergenrother, CW, Herzog, K, Hill, D, Hoekenga, C, Hooven, S, Howell, ES, Huettner, E, Janakus, A, Jones, J, Kareta, TR, Kidd, J, Kingsbury, K, Balram-Knutson, SS, Koelbel, L, Kreiner, J, Lambert, D, Lewin, C, Lovelace, B, Loveridge, M, Lujan, M, Maleszewski, CK, Malhotra, R, Marchese, K, McDonough, E, Mogk, N, Morrison, V, Morton, E, Munoz, R, Nelson, J, Padilla, J, Pennington, R, Polit, A, Ramos, N, Reddy, V, Riehl, M, Rizk, B, Roper, HL, Salazar, S, Schwartz, SR, Selznick, S, Shultz, N, Smith, PH, Stewart, S, Sutton, S, Swindle, T, Tang, YH, Westermann, M, Wolner, CWV, Worden, D, Zega, T, Zeszut, Z, Bjurstrom, A, Bloomquist, L, Dickinson, C, Keates, E, Liang, J, Nifo, V, Taylor, A, Teti, F, Caplinger, M, Bowles, H, Carter, S, Dickenshied, S, Doerres, D, Fisher, T, Hagee, W, Hill, J, Miner, M, Noss, D, Piacentine, N, Smith, M, Toland, A, Wren, P, Bernacki, M, Munoz, DP, Watanabe, S-I, Sandford, SA, Aqueche, A, Ashman, B, Barker, M, Bartels, A, Berry, K, Bos, B, Burns, R, Calloway, A, Carpenter, R, Castro, N, Cosentino, R, Donaldson, J, Dworkin, JP, Cook, JE, Emr, C, Everett, D, Fennell, D, Fleshman, K, Folta, D, Gallagher, D, Garvin, J, Glavin, D, Hull, S, Hyde, K, Ido, H, Ingegneri, A, Jones, N, Kaotira, P, Lim, LF, Liounis, A, Lorentson, C, Lorenz, D, Lyzhoft, J, Mink, R, Moore, W, Mullen, S, Nagy, J, Neumann, G, Nuth, J, Poland, D, Reuter, DC, Rhoads, L, Rieger, S, Sallitt, D, Scroggins, A, Shaw, G, Simon, AA, Swenson, J, Vasudeva, P, Wasser, M, Zellar, R, Grossman, J, Johnston, G, Morris, M, Wendel, J, Burton, A, Keller, LP, McNamara, L, Messenger, S, Nakamura-Messenger, K, Nguyen, A, Righter, K, Queen, E, Bellamy, K, Dill, K, Gardner, S, Giuntini, M, Key, B, Kissell, J, Patterson, D, Vaughan, D, Wright, B, Le Corre, L, Li, J-Y, Molaro, JL, Siegler, MA, Zou, X-D, Ireland, T, Tait, K, Bland, P, Anwar, S, Bojorquez-Murphy, N, Christensen, PR, Haberle, CW, Mehall, G, Rios, K, Franchi, I, Beddingfield, CB, Marshall, J, McCoy, TJ, Russell, S, Killgore, M, Hamilton, VE, Kaplan, HH, Bandfield, JL, Clark, BC, Chodas, M, Lambert, M, Masterson, RA, Freemantle, J, Craft, K, Daly, RT, Ernst, C, Espiritu, RC, Holdridge, M, Jones, M, Nair, AH, Nguyen, L, Peachey, J, Perry, ME, Plescia, J, Roberts, JH, Steele, R, Turner, R, Backer, J, Edmundson, K, Mapel, J, Milazzo, M, Sides, S, Manzoni, C, May, B, Delbo', M, Libourel, G, Ryan, A, Thuillet, F, Marty, B, Team, The OSIRIS-REx, USDA Agricultural Research Service [Maricopa, AZ] (USDA), United States Department of Agriculture (USDA), Dipartimento di Matematica, University of Pisa - Università di Pisa, Department of Geophysics [Sendai], Tohoku University [Sendai], KinetX Aerospace Inc., Institut de Recherche Interdisciplinaire sur les enjeux Sociaux - sciences sociales, politique, santé (IRIS), Université Paris 13 (UP13)-École des hautes études en sciences sociales (EHESS)-Université Sorbonne Paris Cité (USPC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Paris sciences et lettres (PSL), Institut des Matériaux, de Microélectronique et des Nanosciences de Provence (IM2NP), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), The Open University [Milton Keynes] (OU), National Institute of Polar Research [Tokyo] (NiPR), IHU-LIRYC, Université Bordeaux Segalen - Bordeaux 2-CHU Bordeaux [Bordeaux], Planetary Science Institute [Tucson] (PSI), Institute of Northern Engineering, 455 Duckering Bldg, Centre de Mise en Forme des Matériaux (CEMEF), Mines Paris - PSL (École nationale supérieure des mines de Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), ANR-15-IDEX-0001,UCA JEDI,Idex UCA JEDI(2015), Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Sorbonne Paris Cité (USPC)-École des hautes études en sciences sociales (EHESS)-Université Paris 13 (UP13), Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), and MINES ParisTech - École nationale supérieure des mines de Paris

Subjects
010504 meteorology & atmospheric sciences, biology, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Physics, Spin rate, Equator, [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], Astronomy and Astrophysics, Geophysics, Astronomy and planetary science, biology.organism_classification, 01 natural sciences, Article, [SPI]Engineering Sciences [physics], Engineering, Asteroid, 0103 physical sciences, Roche lobe, Osiris, 010303 astronomy & astrophysics, Geology, 0105 earth and related environmental sciences
Abstract

著者人数: 41名ほか (The OSIRIS-REx Team: 所属. 宇宙航空研究開発機構宇宙科学研究所 (JAXA)(ISAS): Van wal, Stefaan; 吉川, 真; 渡邊, 誠一郎), Number of authors: 41 and The OSIRIS-REx Team (Affiliation. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS): Yoshikawa, Makoto; Watanabe, Sei-ichiro), Accepted: 2019-02-11, 資料番号: SA1180379000

Published
2019

4. Properties of rubble-pile asteroid (101955) Bennu from OSIRIS-REx imaging and thermal analysis

Author

Dellagiustina, DN, Emery, JP, Golish, DR, Rozitis, B, Bennett, CA, Burke, KN, Ballouz, R-L, Becker, KJ, Christensen, PR, D'Aubigny, CYD, Hamilton, VE, Reuter, DC, Rizk, B, Simon, AA, Asphaug, E, Bandfield, JL, Barnouin, OS, Barucci, MA, Bierhaus, EB, Binzel, RP, Bottke, WF, Bowles, NE, Campins, H, Clark, BC, Clark, BE, Jr, CHC, Daly, MG, De Leon, J, Delbo', M, Deshapriya, JDP, Elder, CM, Fornasier, S, Hergenrother, CW, Howell, ES, Jawin, ER, Kaplan, HH, Kareta, TR, Le Corre, L, Li, J-Y, Licandro, J, Lim, LF, Michel, P, Molaro, J, Nolan, MC, Pajola, M, Popescu, M, Garcia, JL, Ryan, A, Schwartz, SR, Shultz, N, Siegler, MA, Smith, PH, Tatsumi, E, Thomas, CA, Walsh, KJ, Wolner, CWV, Zou, X-D, Lauretta, DS, Highsmith, DE, Small, J, Vokrouhlicky, D, Brown, E, Hanna, KLD, Warren, T, Brunet, C, Chicoine, RA, Desjardins, S, Gaudreau, D, Haltigin, T, Millington-Veloza, S, Rubi, A, Aponte, J, Gorius, N, Lunsford, A, Allen, B, Grindlay, J, Guevel, D, Hoak, D, Hong, J, Schrader, DL, Bayron, J, Golubov, O, Sanchez, P, Stromberg, J, Hirabayashi, M, Hartzell, CM, Oliver, S, Rascon, M, Harch, A, Joseph, J, Squyres, S, Richardson, D, McGraw, L, Ghent, R, Asad, MM, Johnson, CL, Philpott, L, Susorney, HCM, Cloutis, EA, Hanna, RD, Ciceri, F, Hildebrand, AR, Ibrahim, E-M, Breitenfeld, L, Glotch, T, Rogers, AD, Ferrone, S, Fernandez, Y, Chang, W, Cheuvront, A, Trang, D, Tachibana, S, Yurimoto, H, Brucato, JR, Poggiali, G, Dotto, E, Epifani, EM, Crombie, MK, Lantz, C, Izawa, MRM, Clemett, S, Thomas-Keprta, K, Van Wal, S, Yoshikawa, M, Bellerose, J, Bhaskaran, S, Boyles, C, Chesley, SR, Farnocchia, D, Harbison, A, Kennedy, B, Knight, A, Martinez-Vlasoff, N, Mastrodemos, N, McElrath, T, Owen, W, Park, R, Rush, B, Swanson, L, Takahashi, Y, Velez, D, Yetter, K, Thayer, C, Adam, C, Antreasian, P, Bauman, J, Bryan, C, Carcich, B, Corvin, M, Geeraert, J, Hoffman, J, Leonard, JM, Lessac-Chenen, E, Levine, A, McAdams, J, McCarthy, L, Nelson, D, Page, B, Pelgrift, J, Sahr, E, Stakkestad, K, Stanbridge, D, Wibben, D, Williams, B, Williams, K, Wolff, P, Hayne, P, Kubitschek, D, Fulchignoni, M, Hasselmann, P, Merlin, F, Praet, A, Billett, O, Boggs, A, Buck, B, Carlson-Kelly, S, Cerna, J, Chaffin, K, Church, E, Coltrin, M, Daly, J, Deguzman, A, Dubisher, R, Eckart, D, Ellis, D, Falkenstern, P, Fisher, A, Fisher, ME, Fleming, P, Fortney, K, Francis, S, Freund, S, Gonzales, S, Haas, P, Hasten, A, Hauf, D, Hilbert, A, Howell, D, Jaen, F, Jayakody, N, Jenkins, M, Johnson, K, Lefevre, M, Ma, H, Mario, C, Martin, K, May, C, McGee, M, Miller, B, Miller, C, Miller, G, Mirfakhrai, A, Muhle, E, Norman, C, Olds, R, Parish, C, Ryle, M, Schmitzer, M, Sherman, P, Skeen, M, Susak, M, Sutter, B, Tran, Q, Welch, C, Witherspoon, R, Wood, J, Zareski, J, Arvizu-Jakubicki, M, Audi, E, Bandrowski, R, Becker, TL, Bendall, S, Bloomenthal, H, Blum, D, Boynton, WV, Brodbeck, J, Chojnacki, M, Colpo, A, Contreras, J, Cutts, J, Dean, D, Diallo, B, Drinnon, D, Drozd, K, Enos, HL, Enos, R, Fellows, C, Ferro, T, Fisher, MR, Fitzgibbon, G, Fitzgibbon, M, Forelli, J, Forrester, T, Galinsky, I, Garcia, R, Gardner, A, Habib, N, Hamara, D, Hammond, D, Hanley, K, Harshman, K, Herzog, K, Hill, D, Hoekenga, C, Hooven, S, Huettner, E, Janakus, A, Jones, J, Kidd, J, Kingsbury, K, Balram-Knutson, SS, Koelbel, L, Kreiner, J, Lambert, D, Lewin, C, Lovelace, B, Loveridge, M, Lujan, M, Maleszewski, CK, Malhotra, R, Marchese, K, McDonough, E, Mogk, N, Morrison, V, Morton, E, Munoz, R, Nelson, J, Padilla, J, Pennington, R, Polit, A, Ramos, N, Reddy, V, Riehl, M, Roper, HL, Salazar, S, Selznick, S, Stewart, S, Sutton, S, Swindle, T, Tang, YH, Westermann, M, Worden, D, Zega, T, Zeszut, Z, Bjurstrom, A, Bloomquist, L, Dickinson, C, Keates, E, Liang, J, Nifo, V, Taylor, A, Teti, F, Caplinger, M, Bowles, H, Carter, S, Dickenshied, S, Doerres, D, Fisher, T, Hagee, W, Hill, J, Miner, M, Noss, D, Piacentine, N, Smith, M, Toland, A, Wren, P, Bernacki, M, Munoz, DP, Watanabe, S-I, Sandford, SA, Aqueche, A, Ashman, B, Barker, M, Bartels, A, Berry, K, Bos, B, Burns, R, Calloway, A, Carpenter, R, Castro, N, Cosentino, R, Donaldson, J, Dworkin, JP, Cook, JE, Emr, C, Everett, D, Fennell, D, Fleshman, K, Folta, D, Gallagher, D, Garvin, J, Getzandanner, K, Glavin, D, Hull, S, Hyde, K, Ido, H, Ingegneri, A, Jones, N, Kaotira, P, Liounis, A, Lorentson, C, Lorenz, D, Lyzhoft, J, Mazarico, EM, Mink, R, Moore, W, Moreau, M, Mullen, S, Nagy, J, Neumann, G, Nuth, J, Poland, D, Rhoads, L, Rieger, S, Rowlands, D, Sallitt, D, Scroggins, A, Shaw, G, Swenson, J, Vasudeva, P, Wasser, M, Zellar, R, Grossman, J, Johnston, G, Morris, M, Wendel, J, Burton, A, Keller, LP, McNamara, L, Messenger, S, Nakamura-Messenger, K, Nguyen, A, Righter, K, Queen, E, Bellamy, K, Dill, K, Gardner, S, Giuntini, M, Key, B, Kissell, J, Patterson, D, Vaughan, D, Wright, B, Gaskell, RW, Molaro, JL, Palmer, EE, Tricarico, P, Weirich, JR, Ireland, T, Tait, K, Bland, P, Anwar, S, Bojorquez-Murphy, N, Haberle, CW, Mehall, G, Rios, K, Franchi, I, Beddingfield, CB, Marshall, J, Brack, DN, French, AS, McMahon, JW, Scheeres, DJ, McCoy, TJ, Russell, S, Killgore, M, Chodas, M, Lambert, M, Masterson, RA, Freemantle, J, Seabrook, JA, Craft, K, Daly, RT, Ernst, C, Espiritu, RC, Holdridge, M, Jones, M, Nair, AH, Nguyen, L, Peachey, J, Perry, ME, Plescia, J, Roberts, JH, Steele, R, Turner, R, Backer, J, Edmundson, K, Mapel, J, Milazzo, M, Sides, S, Manzoni, C, May, B, Libourel, G, Thuillet, F, Marty, B, Team, OSIRIS-REx, The Open University [Milton Keynes] (OU), Lunar and Planetary Laboratory [Tucson] (LPL), University of Arizona, ASU School of Earth and Space Exploration (SESE), Arizona State University [Tempe] (ASU), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC), 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), Department of Atmospheric, Oceanic and Planetary Physics [Oxford] (AOPP), University of Oxford [Oxford], Dept. of Physics, University of Central Florida [Orlando], IHU-LIRYC, CHU Bordeaux [Bordeaux]-Université Bordeaux Segalen - Bordeaux 2, Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA (UMR_8109)), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, PSL Research University (PSL)-PSL Research University (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Planetary Science Institute [Tucson] (PSI), Instituto de Astrofisica de Canarias (IAC), Institute of Northern Engineering, 455 Duckering Bldg, Centro di Ateneo di Studi e Attività Spaziali 'Giuseppe Colombo' (CISAS), Universita degli Studi di Padova, Laboratoire de Géophysique Interne et Tectonophysique (LGIT), Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Laboratoire Central des Ponts et Chaussées (LCPC)-Institut des Sciences de la Terre (ISTerre), Université Grenoble Alpes (UGA)-Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-PRES Université de Grenoble-Institut de recherche pour le développement [IRD] : UR219-Institut national des sciences de l'Univers (INSU - CNRS)-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS)-PRES Université de Grenoble-Institut de recherche pour le développement [IRD] : UR219-Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR), Centre de Mise en Forme des Matériaux (CEMEF), Centre National de la Recherche Scientifique (CNRS)-PSL Research University (PSL)-MINES ParisTech - École nationale supérieure des mines de Paris, Université Bordeaux Segalen - Bordeaux 2-CHU Bordeaux [Bordeaux], Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), University of Central Florida [Orlando] (UCF), Institut des Sciences de la Terre (ISTerre), Institut Français des Sciences et Technologies des Transports, de l'Aménagement et des Réseaux (IFSTTAR)-Institut national des sciences de l'Univers (INSU - CNRS)-Institut de recherche pour le développement [IRD] : UR219-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), ANR-15-IDEX-0001,UCA JEDI,Idex UCA JEDI(2015), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), and ANR-15-IDEX-0001,UCA JEDI,Idex UCA JEDI (2016)

Subjects
010504 meteorology & atmospheric sciences, Spacecraft, business.industry, Rubble, [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], Astronomy and Astrophysics, Astronomy and planetary science, engineering.material, Albedo, 01 natural sciences, Regolith, Parent body, Astrobiology, [SPI]Engineering Sciences [physics], Planetary science, Asteroid, 0103 physical sciences, engineering, Particle, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], business, 010303 astronomy & astrophysics, Geology, 0105 earth and related environmental sciences
Abstract

著者人数: 58名ほか (The OSIRIS-REx Team: 所属. 宇宙航空研究開発機構宇宙科学研究所(JAXA)(ISAS): Van wal, S; 吉川, 真; 渡邊, 誠一郎), Number of authors: 58 and The OSIRIS-REx Team (Affiliation. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency(JAXA)(ISAS): Van wal, S; Yoshikawa, Makoto; Watanabe, Sei-icihro), Accepted: 2019-02-19, 資料番号: SA1190037000

Published
2019

5. The operational environment and rotational acceleration of asteroid (101955) Bennu from OSIRIS-REx observations

Author

Hergenrother, CW, Maleszewski, CK, Nolan, MC, Li, J-Y, d'Aubigny, CYD, Shelly, FC, Howell, ES, Kareta, TR, Izawa, MRM, Barucci, MA, Bierhaus, EB, Campins, H, Chesley, SR, Clark, BE, Christensen, EJ, DellaGiustina, DN, Fornasier, S, Golish, DR, Hartzell, CM, Rizk, B, Scheeres, DJ, Smith, PH, Zou, X-D, Lauretta, DS, Highsmith, DE, Small, J, Vokrouhlicky, D, Bowles, NE, Brown, E, Hanna, KLD, Warren, T, Brunet, C, Chicoine, RA, Desjardins, S, Gaudreau, D, Haltigin, T, Millington-Veloza, S, Rubi, A, Aponte, J, Gorius, N, Lunsford, A, Allen, B, Grindlay, J, Guevel, D, Hoak, D, Hong, J, Schrader, DL, Bayron, J, Golubov, O, Sanchez, P, Stromberg, J, Hirabayashi, M, Oliver, S, Rascon, M, Harch, A, Joseph, J, Squyres, S, Richardson, D, Emery, JP, McGraw, L, Ghent, R, Binzel, RP, Al Asad, MM, Johnson, CL, Philpott, L, Susorney, HCM, Cloutis, EA, Hanna, RD, Connolly, HC, Ciceri, F, Hildebrand, AR, Ibrahim, E-M, Breitenfeld, L, Glotch, T, Rogers, AD, Ferrone, S, Thomas, CA, Fernandez, Y, Chang, W, Cheuvront, A, Trang, D, Tachibana, S, Yurimoto, H, Brucato, JR, Poggiali, G, Pajola, M, Dotto, E, Epifani, EM, Crombie, MK, Lantz, C, de Leon, J, Licandro, J, Rizos Garcia, JL, Clemett, S, Thomas-Keprta, K, Van Wal, S, Yoshikawa, M, Bellerose, J, Bhaskaran, S, Boyles, C, Elder, CM, Farnocchia, D, Harbison, A, Kennedy, B, Knight, A, Martinez-Vlasoff, N, Mastrodemos, N, McElrath, T, Owen, W, Park, R, Rush, B, Swanson, L, Takahashi, Y, Velez, D, Yetter, K, Thayer, C, Adam, C, Antreasian, P, Bauman, J, Bryan, C, Carcich, B, Corvin, M, Geeraert, J, Hoffman, J, Leonard, JM, Lessac-Chenen, E, Levine, A, McAdams, J, McCarthy, L, Nelson, D, Page, B, Pelgrift, J, Sahr, E, Stakkestad, K, Stanbridge, D, Wibben, D, Williams, B, Williams, K, Wolff, P, Hayne, P, Kubitschek, D, Deshapriya, JDP, Fulchignoni, M, Hasselmann, P, Merlin, F, Praet, A, Billett, O, Boggs, A, Buck, B, Carlson-Kelly, S, Cerna, J, Chaffin, K, Church, E, Coltrin, M, Daly, J, Deguzman, A, Dubisher, R, Eckart, D, Ellis, D, Falkenstern, P, Fisher, A, Fisher, ME, Fleming, P, Fortney, K, Francis, S, Freund, S, Gonzales, S, Haas, P, Hasten, A, Hauf, D, Hilbert, A, Howell, D, Jaen, F, Jayakody, N, Jenkins, M, Johnson, K, Lefevre, M, Ma, H, Mario, C, Martin, K, May, C, McGee, M, Miller, B, Miller, C, Miller, G, Mirfakhrai, A, Muhle, E, Norman, C, Olds, R, Parish, C, Ryle, M, Schmitzer, M, Sherman, P, Skeen, M, Susak, M, Sutter, B, Tran, Q, Welch, C, Witherspoon, R, Wood, J, Zareski, J, Arvizu-Jakubicki, M, Asphaug, E, Audi, E, Ballouz, R-L, Bandrowski, R, Becker, KJ, Becker, TL, Bendall, S, Bennett, CA, Bloomenthal, H, Blum, D, Boynton, W, Brodbeck, J, Burke, KN, Chojnacki, M, Colpo, A, Contreras, J, Cutts, J, Dean, D, Diallo, B, Drinnon, D, Drozd, K, Enos, HL, Enos, R, Fellows, C, Ferro, T, Fisher, MR, Fitzgibbon, G, Fitzgibbon, M, Forelli, J, Forrester, T, Galinsky, I, Garcia, R, Gardner, A, Habib, N, Hamara, D, Hammond, D, Hanley, K, Harshman, K, Herzog, K, Hill, D, Hoekenga, C, Hooven, S, Huettner, E, Janakus, A, Jones, J, Kidd, J, Kingsbury, K, Balram-Knutson, SS, Koelbel, L, Kreiner, J, Lambert, D, Lewin, C, Lovelace, B, Loveridge, M, Lujan, M, Malhotra, R, Marchese, K, McDonough, E, Mogk, N, Morrison, V, Morton, E, Munoz, R, Nelson, J, Padilla, J, Pennington, R, Polit, A, Ramos, N, Reddy, V, Riehl, M, Roper, HL, Salazar, S, Schwartz, SR, Selznick, S, Shultz, N, Stewart, S, Sutton, S, Swindle, T, Tang, YH, Westermann, M, Wolner, CW, Worden, D, Zega, T, Zeszut, Z, Bjurstrom, A, Bloomquist, L, Dickinson, C, Keates, E, Liang, J, Nifo, V, Taylor, A, Teti, F, Caplinger, M, Bowles, H, Carter, S, Dickenshied, S, Doerres, D, Fisher, T, Hagee, W, Hill, J, Miner, M, Noss, D, Piacentine, N, Smith, M, Toland, A, Wren, P, Bernacki, M, Munoz, DP, Watanabe, S, Sandford, SA, Aqueche, A, Ashman, B, Barker, M, Bartels, A, Berry, K, Bos, B, Burns, R, Calloway, A, Carpenter, R, Castro, N, Cosentino, R, Donaldson, J, Dworkin, JP, Cook, JE, Emr, C, Everett, D, Fennell, D, Fleshman, K, Folta, D, Gallagher, D, Garvin, J, Getzandanner, K, Glavin, D, Hull, S, Hyde, K, Ido, H, Ingegneri, A, Jones, N, Kaotira, P, Lim, LF, Liounis, A, Lorentson, C, Lorenz, D, Lyzhoft, J, Mazarico, EM, Mink, R, Moore, W, Moreau, M, Mullen, S, Nagy, J, Neumann, G, Nuth, J, Poland, D, Reuter, DC, Rhoads, L, Rieger, S, Rowlands, D, Sallitt, D, Scroggins, A, Shaw, G, Simon, AA, Swenson, J, Vasudeva, P, Wasser, M, Zellar, R, Grossman, J, Johnston, G, Morris, M, Wendel, J, Burton, A, Keller, LP, McNamara, L, Messenger, S, Nakamura-Messenger, K, Nguyen, A, Righter, K, Queen, E, Bellamy, K, Dill, K, Gardner, S, Giuntini, M, Key, B, Kissell, J, Patterson, D, Vaughan, D, Wright, B, Gaskell, RW, Le Corre, L, Molaro, JL, Palmer, EE, Siegler, MA, Tricarico, P, Weirich, JR, Ireland, T, Tait, K, Bland, P, Anwar, S, Bojorquez-Murphy, N, Christensen, PR, Haberle, CW, Mehall, G, Rios, K, Franchi, I, Rozitis, B, Beddingfield, CB, Marshall, J, Brack, DN, French, AS, McMahon, JW, Jawin, ER, McCoy, TJ, Russell, S, Killgore, M, Bottke, WF, Hamilton, VE, Kaplan, HH, Walsh, KJ, Bandfield, JL, Clark, BC, Chodas, M, Lambert, M, Masterson, RA, Daly, MG, Freemantle, J, Seabrook, JA, Barnouin, OS, Craft, K, Daly, RT, Ernst, C, Espiritu, RC, Holdridge, M, Jones, M, Nair, AH, Nguyen, L, Peachey, J, Perry, ME, Plescia, J, Roberts, JH, Steele, R, Turner, R, Backer, J, Edmundson, K, Mapel, J, Milazzo, M, Sides, S, Manzoni, C, May, B, Delbo, M, Libourel, G, Michel, P, Ryan, A, Thuillet, F, Marty, B, Hergenrother, CW, Maleszewski, CK, Nolan, MC, Li, J-Y, d'Aubigny, CYD, Shelly, FC, Howell, ES, Kareta, TR, Izawa, MRM, Barucci, MA, Bierhaus, EB, Campins, H, Chesley, SR, Clark, BE, Christensen, EJ, DellaGiustina, DN, Fornasier, S, Golish, DR, Hartzell, CM, Rizk, B, Scheeres, DJ, Smith, PH, Zou, X-D, Lauretta, DS, Highsmith, DE, Small, J, Vokrouhlicky, D, Bowles, NE, Brown, E, Hanna, KLD, Warren, T, Brunet, C, Chicoine, RA, Desjardins, S, Gaudreau, D, Haltigin, T, Millington-Veloza, S, Rubi, A, Aponte, J, Gorius, N, Lunsford, A, Allen, B, Grindlay, J, Guevel, D, Hoak, D, Hong, J, Schrader, DL, Bayron, J, Golubov, O, Sanchez, P, Stromberg, J, Hirabayashi, M, Oliver, S, Rascon, M, Harch, A, Joseph, J, Squyres, S, Richardson, D, Emery, JP, McGraw, L, Ghent, R, Binzel, RP, Al Asad, MM, Johnson, CL, Philpott, L, Susorney, HCM, Cloutis, EA, Hanna, RD, Connolly, HC, Ciceri, F, Hildebrand, AR, Ibrahim, E-M, Breitenfeld, L, Glotch, T, Rogers, AD, Ferrone, S, Thomas, CA, Fernandez, Y, Chang, W, Cheuvront, A, Trang, D, Tachibana, S, Yurimoto, H, Brucato, JR, Poggiali, G, Pajola, M, Dotto, E, Epifani, EM, Crombie, MK, Lantz, C, de Leon, J, Licandro, J, Rizos Garcia, JL, Clemett, S, Thomas-Keprta, K, Van Wal, S, Yoshikawa, M, Bellerose, J, Bhaskaran, S, Boyles, C, Elder, CM, Farnocchia, D, Harbison, A, Kennedy, B, Knight, A, Martinez-Vlasoff, N, Mastrodemos, N, McElrath, T, Owen, W, Park, R, Rush, B, Swanson, L, Takahashi, Y, Velez, D, Yetter, K, Thayer, C, Adam, C, Antreasian, P, Bauman, J, Bryan, C, Carcich, B, Corvin, M, Geeraert, J, Hoffman, J, Leonard, JM, Lessac-Chenen, E, Levine, A, McAdams, J, McCarthy, L, Nelson, D, Page, B, Pelgrift, J, Sahr, E, Stakkestad, K, Stanbridge, D, Wibben, D, Williams, B, Williams, K, Wolff, P, Hayne, P, Kubitschek, D, Deshapriya, JDP, Fulchignoni, M, Hasselmann, P, Merlin, F, Praet, A, Billett, O, Boggs, A, Buck, B, Carlson-Kelly, S, Cerna, J, Chaffin, K, Church, E, Coltrin, M, Daly, J, Deguzman, A, Dubisher, R, Eckart, D, Ellis, D, Falkenstern, P, Fisher, A, Fisher, ME, Fleming, P, Fortney, K, Francis, S, Freund, S, Gonzales, S, Haas, P, Hasten, A, Hauf, D, Hilbert, A, Howell, D, Jaen, F, Jayakody, N, Jenkins, M, Johnson, K, Lefevre, M, Ma, H, Mario, C, Martin, K, May, C, McGee, M, Miller, B, Miller, C, Miller, G, Mirfakhrai, A, Muhle, E, Norman, C, Olds, R, Parish, C, Ryle, M, Schmitzer, M, Sherman, P, Skeen, M, Susak, M, Sutter, B, Tran, Q, Welch, C, Witherspoon, R, Wood, J, Zareski, J, Arvizu-Jakubicki, M, Asphaug, E, Audi, E, Ballouz, R-L, Bandrowski, R, Becker, KJ, Becker, TL, Bendall, S, Bennett, CA, Bloomenthal, H, Blum, D, Boynton, W, Brodbeck, J, Burke, KN, Chojnacki, M, Colpo, A, Contreras, J, Cutts, J, Dean, D, Diallo, B, Drinnon, D, Drozd, K, Enos, HL, Enos, R, Fellows, C, Ferro, T, Fisher, MR, Fitzgibbon, G, Fitzgibbon, M, Forelli, J, Forrester, T, Galinsky, I, Garcia, R, Gardner, A, Habib, N, Hamara, D, Hammond, D, Hanley, K, Harshman, K, Herzog, K, Hill, D, Hoekenga, C, Hooven, S, Huettner, E, Janakus, A, Jones, J, Kidd, J, Kingsbury, K, Balram-Knutson, SS, Koelbel, L, Kreiner, J, Lambert, D, Lewin, C, Lovelace, B, Loveridge, M, Lujan, M, Malhotra, R, Marchese, K, McDonough, E, Mogk, N, Morrison, V, Morton, E, Munoz, R, Nelson, J, Padilla, J, Pennington, R, Polit, A, Ramos, N, Reddy, V, Riehl, M, Roper, HL, Salazar, S, Schwartz, SR, Selznick, S, Shultz, N, Stewart, S, Sutton, S, Swindle, T, Tang, YH, Westermann, M, Wolner, CW, Worden, D, Zega, T, Zeszut, Z, Bjurstrom, A, Bloomquist, L, Dickinson, C, Keates, E, Liang, J, Nifo, V, Taylor, A, Teti, F, Caplinger, M, Bowles, H, Carter, S, Dickenshied, S, Doerres, D, Fisher, T, Hagee, W, Hill, J, Miner, M, Noss, D, Piacentine, N, Smith, M, Toland, A, Wren, P, Bernacki, M, Munoz, DP, Watanabe, S, Sandford, SA, Aqueche, A, Ashman, B, Barker, M, Bartels, A, Berry, K, Bos, B, Burns, R, Calloway, A, Carpenter, R, Castro, N, Cosentino, R, Donaldson, J, Dworkin, JP, Cook, JE, Emr, C, Everett, D, Fennell, D, Fleshman, K, Folta, D, Gallagher, D, Garvin, J, Getzandanner, K, Glavin, D, Hull, S, Hyde, K, Ido, H, Ingegneri, A, Jones, N, Kaotira, P, Lim, LF, Liounis, A, Lorentson, C, Lorenz, D, Lyzhoft, J, Mazarico, EM, Mink, R, Moore, W, Moreau, M, Mullen, S, Nagy, J, Neumann, G, Nuth, J, Poland, D, Reuter, DC, Rhoads, L, Rieger, S, Rowlands, D, Sallitt, D, Scroggins, A, Shaw, G, Simon, AA, Swenson, J, Vasudeva, P, Wasser, M, Zellar, R, Grossman, J, Johnston, G, Morris, M, Wendel, J, Burton, A, Keller, LP, McNamara, L, Messenger, S, Nakamura-Messenger, K, Nguyen, A, Righter, K, Queen, E, Bellamy, K, Dill, K, Gardner, S, Giuntini, M, Key, B, Kissell, J, Patterson, D, Vaughan, D, Wright, B, Gaskell, RW, Le Corre, L, Molaro, JL, Palmer, EE, Siegler, MA, Tricarico, P, Weirich, JR, Ireland, T, Tait, K, Bland, P, Anwar, S, Bojorquez-Murphy, N, Christensen, PR, Haberle, CW, Mehall, G, Rios, K, Franchi, I, Rozitis, B, Beddingfield, CB, Marshall, J, Brack, DN, French, AS, McMahon, JW, Jawin, ER, McCoy, TJ, Russell, S, Killgore, M, Bottke, WF, Hamilton, VE, Kaplan, HH, Walsh, KJ, Bandfield, JL, Clark, BC, Chodas, M, Lambert, M, Masterson, RA, Daly, MG, Freemantle, J, Seabrook, JA, Barnouin, OS, Craft, K, Daly, RT, Ernst, C, Espiritu, RC, Holdridge, M, Jones, M, Nair, AH, Nguyen, L, Peachey, J, Perry, ME, Plescia, J, Roberts, JH, Steele, R, Turner, R, Backer, J, Edmundson, K, Mapel, J, Milazzo, M, Sides, S, Manzoni, C, May, B, Delbo, M, Libourel, G, Michel, P, Ryan, A, Thuillet, F, and Marty, B

Abstract

During its approach to asteroid (101955) Bennu, NASA's Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) spacecraft surveyed Bennu's immediate environment, photometric properties, and rotation state. Discovery of a dusty environment, a natural satellite, or unexpected asteroid characteristics would have had consequences for the mission's safety and observation strategy. Here we show that spacecraft observations during this period were highly sensitive to satellites (sub-meter scale) but reveal none, although later navigational images indicate that further investigation is needed. We constrain average dust production in September 2018 from Bennu's surface to an upper limit of 150 g s-1 averaged over 34 min. Bennu's disk-integrated photometric phase function validates measurements from the pre-encounter astronomical campaign. We demonstrate that Bennu's rotation rate is accelerating continuously at 3.63 ± 0.52 × 10-6 degrees day-2, likely due to the Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect, with evolutionary implications.

Published
2019

6. Polycyclic aromatic hydrocarbons and crystalline silicates in the bipolar post-asymptotic giant branch star IRAS 16279-4757

Author

UCL, Matsuura, M., Zijlstra, AA, Molster, FJ, Hony, S., Waters, LBFM, Kemper, F., Bowey, JE, Chihara, H, Koike, C, Keller, LP, UCL, Matsuura, M., Zijlstra, AA, Molster, FJ, Hony, S., Waters, LBFM, Kemper, F., Bowey, JE, Chihara, H, Koike, C, and Keller, LP

Abstract

IRAS 16279-4757 belongs to a group of post-asymptotic giant branch (post-AGB) stars showing both polycyclic aromatic hydrocarbon (PAH) bands and crystalline silicates. We present mid-infrared images that resolve the object for the first time. The morphology is similar to that of the "Red Rectangle" (HD 44179), the prototype object with PAHs and crystalline silicates. A two-component model and images suggest a dense oxygen-rich torus, an inner, low-density, carbon-rich region, and a carbon-rich bipolar outflow. The PAH bands are enhanced at the outflow, while the continuum emission is concentrated toward the center. Our findings support the suggestion that mixed chemistry and morphology are closely related. We discuss the Infrared Space Observatory Short-Wavelength Spectrometer (ISO SWS) spectra of IRAS 16279-4757. Several bands in the ISO SWS spectrum show a match with anorthite: this would be the first detection of this mineral outside the solar system. Compared to HD 44179, the shapes of PAH bands are closer to those of planetary nebulae, possibly related to a population of small PAHs present in HD 44179 but absent around IRAS 16279-4757. Detailed examination of the spectra shows the individual character of these two objects. The comparison suggests that the torus found in IRAS 16279-4757 may have formed more recently than that in HD 44179.

Published
2004

8. Abundant presolar grains and primordial organics preserved in carbon-rich exogenous clasts in asteroid Ryugu.

Author

Nguyen AN, Mane P, Keller LP, Piani L, Abe Y, Aléon J, Alexander CMO, Amari S, Amelin Y, Bajo KI, Bizzarro M, Bouvier A, Carlson RW, Chaussidon M, Choi BG, Dauphas N, Davis AM, Di Rocco T, Fujiya W, Fukai R, Gautam I, Haba MK, Hibiya Y, Hidaka H, Homma H, Hoppe P, Huss GR, Ichida K, Iizuka T, Ireland TR, Ishikawa A, Itoh S, Kawasaki N, Kita NT, Kitajima K, Kleine T, Komatani S, Krot AN, Liu MC, Masuda Y, McKeegan KD, Morita M, Motomura K, Moynier F, Nakai I, Nagashima K, Nesvorný D, Nittler L, Onose M, Pack A, Park C, Qin L, Russell SS, Sakamoto N, Schönbächler M, Tafla L, Tang H, Terada K, Terada Y, Usui T, Wada S, Wadhwa M, Walker RJ, Yamashita K, Yin QZ, Yokoyama T, Yoneda S, Young ED, Yui H, Zhang AC, Nakamura T, Naraoka H, Noguchi T, Okazaki R, Sakamoto K, Yabuta H, Abe M, Miyazaki A, Nakato A, Nishimura M, Okada T, Yada T, Yogata K, Nakazawa S, Saiki T, Tanaka S, Terui F, Tsuda Y, Watanabe SI, Yoshikawa M, Tachibana S, and Yurimoto H

Subjects
Solar System, Silicates, Carbon analysis, Meteoroids
Abstract

Preliminary analyses of asteroid Ryugu samples show kinship to aqueously altered CI (Ivuna-type) chondrites, suggesting similar origins. We report identification of C-rich, particularly primitive clasts in Ryugu samples that contain preserved presolar silicate grains and exceptional abundances of presolar SiC and isotopically anomalous organic matter. The high presolar silicate abundance (104 ppm) indicates that the clast escaped extensive alteration. The 5 to 10 times higher abundances of presolar SiC (~235 ppm), N-rich organic matter, organics with N isotopic anomalies (1.2%), and organics with C isotopic anomalies (0.2%) in the primitive clasts compared to bulk Ryugu suggest that the clasts formed in a unique part of the protoplanetary disk enriched in presolar materials. These clasts likely represent previously unsampled outer solar system material that accreted onto Ryugu after aqueous alteration ceased, consistent with Ryugu's rubble pile origin.

Published
2023
Full Text
View/download PDF

9. Spacecraft sample collection and subsurface excavation of asteroid (101955) Bennu.

Author

Lauretta DS, Adam CD, Allen AJ, Ballouz RL, Barnouin OS, Becker KJ, Becker T, Bennett CA, Bierhaus EB, Bos BJ, Burns RD, Campins H, Cho Y, Christensen PR, Church ECA, Clark BE, Connolly HC Jr, Daly MG, DellaGiustina DN, Drouet d'Aubigny CY, Emery JP, Enos HL, Kasper SF, Garvin JB, Getzandanner K, Golish DR, Hamilton VE, Hergenrother CW, Kaplan HH, Keller LP, Lessac-Chenen EJ, Liounis AJ, Ma H, McCarthy LK, Miller BD, Moreau MC, Morota T, Nelson DS, Nolau JO, Olds R, Pajola M, Pelgrift JY, Polit AT, Ravine MA, Reuter DC, Rizk B, Rozitis B, Ryan AJ, Sahr EM, Sakatani N, Seabrook JA, Selznick SH, Skeen MA, Simon AA, Sugita S, Walsh KJ, Westermann MM, Wolner CWV, and Yumoto K

Abstract

Carbonaceous asteroids, such as (101955) Bennu, preserve material from the early Solar System, including volatile compounds and organic molecules. We report spacecraft imaging and spectral data collected during and after retrieval of a sample from Bennu's surface. The sampling event mobilized rocks and dust into a debris plume, excavating a 9-meter-long elliptical crater. This exposed material is darker, spectrally redder, and more abundant in fine particulates than the original surface. The bulk density of the displaced subsurface material was 500 to 700 kilograms per cubic meter, which is about half that of the whole asteroid. Particulates that landed on instrument optics spectrally resemble aqueously altered carbonaceous meteorites. The spacecraft stored 250 ± 101 grams of material, which will be delivered to Earth in 2023.

Published
2022
Full Text
View/download PDF

10. Cluster of Vacuolated Spinous Keratinocytes: A Clue to Cornoid Lamellation and a Case of Porokeratosis Disseminata.

Author

Keller LP, Halim K, Abedi SM, Liu W, and Gottesman SP

Subjects
Administration, Cutaneous, Administration, Oral, Biopsy, Combined Modality Therapy, Databases, Factual, Female, Humans, Middle Aged, Phenotype, Phototherapy, Porokeratosis therapy, Retinoids administration & dosage, Treatment Outcome, Vitamin D administration & dosage, Vitamin D analogs & derivatives, Keratinocytes pathology, Porokeratosis pathology, Skin pathology, Vacuoles pathology
Abstract

Cornoid lamella is a definitive diagnostic feature of porokeratosis, a disorder of keratinization that has various different clinical presentations. A tiered column of parakeratosis and a diminished granular layer with dyskeratotic keratinocytes at the column base are all useful and known features of cornoid lamellation. We have found a cluster of vacuolated spinous cells to be a reliable fourth feature of cornoid lamellation and a feature when present alone to be a reliable sign of impending cornoid lamellation on deeper sections. Furthermore, we present a novel clinical phenotype of disseminated papular porokeratosis with effective clinical response to combination of phototherapy, oral and topical retinoids, and topical vitamin D derivative, which too contained all 4 features of cornoid lamellation.

Published
2020
Full Text
View/download PDF

11. A Coordinated Microstructural and Isotopic Study of a Wark-Lovering Rim on a Vigarano CAI.

Author

Han J, Keller LP, Liu MC, Needham AW, Hertwig AT, Messenger S, and Simon JI

Abstract

We carried out a coordinated mineralogical and isotopic study of a Wark-Lovering (WL) rim on a Ca,Al-rich inclusion (CAI) from the reduced CV3 chondrite Vigarano. The outermost edge of the CAI mantle is mineralogically and texturally distinct compared to the underlying mantle that is composed of coarse, zoned melilite (Åk ~10-60 ) grains. The mantle edge contains fine-grained gehlenite with hibonite and rare grossite that likely formed by rapid crystallization from a melt enriched in Ca and Al. These gehlenite and hibonite layers are surrounded by successive layers of spinel, zoned melilite (Åk ~0-10 ), zoned diopside that grades outwards from Al,Ti-rich to Al,Ti-poor, and forsteritic olivine intergrown with diopside. These layered textures are indicative of sequential condensation of spinel, melilite, diopside, and forsterite onto hibonite. Anorthite occurs as a discontinuous layer that corrodes adjacent melilite and Al-diopside, and appears to have replaced them, probably even later than the forsterite layer formation. Based on these observations, we conclude that the WL rim formation was initiated by flash melting and extensive evaporation of the original inclusion edge, followed by subsequent gas-solid reactions under highly dynamic conditions. All the WL rim minerals are 16 O-rich (Δ 17 O = ~-23‰), indicating their formation in an 16 O-rich nebular reservoir. Our Al-Mg measurements of hibonite, spinel, and diopside from the WL rim, as well as spinel and Al,Ti-diopside in the core, define a single, well-correlated isochron with an inferred initial 26 Al/ 27 Al ratio of (4.94 ± 0.12) × 10 -5 . This indicates that the WL rim formed shortly after the host CAI. In contrast, the lack of 26 Mg excesses in the WL rim anorthite suggest its later formation or later isotopic disturbance in the solar nebula, after 26 Al had decayed.

Published
2020
Full Text
View/download PDF

12. Origin of 16 O-rich fine-grained Ca-Al-rich inclusions of different mineralogy and texture.

Author

Han J, Jacobsen B, Liu MC, Brearley AJ, Matzel JE, and Keller LP

Abstract

A coordinated mineralogical and oxygen isotopic study of four fine-grained calcium-, aluminum-rich inclusions (CAIs) from the ALHA77307 CO3.0 carbonaceous chondrite was conducted. Three of the inclusions studied, 05, 1-65, and 2-119, all have nodular structures that represent three major groups, melilite-rich, spinel-rich, and hibonite-rich, based on their primary core mineral assemblages. A condensation origin was inferred for these CAIs. However, the difference in their primary core mineralogy reflects unique nebular environments in which multiple gas-solid reactions occurred under disequilibrium conditions to form hibonite, spinel, and melilite with minor perovskite and Al,Ti-rich diopside. A common occurrence of a diopside rim on the CAIs records a widespread event that marks the end of their condensation as a result of isolation from a nebular gas. An exception is a rare inclusion 2-112 that contains euhedral spinel crystals embedded in melilite, suggesting this CAI had been re-melted. All of the fine-grained CAIs analyzed in ALHA77307 are uniformly 16 O-rich with an average Δ 17 O value of ~-22 ± 5‰ (2σ), indicating no apparent correlation between their textures and oxygen isotopic compositions. We therefore conclude that a prevalent 16 O-rich gas reservoir existed in a region of the solar nebula where CO3 fine-grained CAIs formed, initially by condensation and then later, some of them were reprocessed by melting event(s).

Published
2019
Full Text
View/download PDF

13. Evidence for widespread hydrated minerals on asteroid (101955) Bennu.

Author

Hamilton VE, Simon AA, Christensen PR, Reuter DC, Clark BE, Barucci MA, Bowles NE, Boynton WV, Brucato JR, Cloutis EA, Connolly HC Jr, Hanna KLD, Emery JP, Enos HL, Fornasier S, Haberle CW, Hanna RD, Howell ES, Kaplan HH, Keller LP, Lantz C, Li JY, Lim LF, McCoy TJ, Merlin F, Nolan MC, Praet A, Rozitis B, Sandford SA, Schrader DL, Thomas CA, Zou XD, and Lauretta DS

Abstract

Early spectral data from the Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) mission reveal evidence for abundant hydrated minerals on the surface of near-Earth asteroid (101955) Bennu in the form of a near-infrared absorption near 2.7 μm and thermal infrared spectral features that are most similar to those of aqueously altered CM carbonaceous chondrites. We observe these spectral features across the surface of Bennu, and there is no evidence of substantial rotational variability at the spatial scales of tens to hundreds of meters observed to date. In the visible and near-infrared (0.4 to 2.4 μm) Bennu's spectrum appears featureless and with a blue (negative) slope, confirming previous ground-based observations. Bennu may represent a class of objects that could have brought volatiles and organic chemistry to Earth.

Published
2019
Full Text
View/download PDF

14. Infrared spectroscopy of comet 81P/Wild 2 samples returned by Stardust.

Author

Keller LP, Bajt S, Baratta GA, Borg J, Bradley JP, Brownlee DE, Busemann H, Brucato JR, Burchell M, Colangeli L, d'Hendecourt L, Djouadi Z, Ferrini G, Flynn G, Franchi IA, Fries M, Grady MM, Graham GA, Grossemy F, Kearsley A, Matrajt G, Nakamura-Messenger K, Mennella V, Nittler L, Palumbo ME, Stadermann FJ, Tsou P, Rotundi A, Sandford SA, Snead C, Steele A, Wooden D, and Zolensky M

Subjects
Cosmic Dust analysis, Spacecraft, Spectroscopy, Fourier Transform Infrared, Hydrocarbons analysis, Meteoroids, Silicates analysis
Abstract

Infrared spectra of material captured from comet 81P/Wild 2 by the Stardust spacecraft reveal indigenous aliphatic hydrocarbons similar to those in interplanetary dust particles thought to be derived from comets, but with longer chain lengths than those observed in the diffuse interstellar medium. Similarly, the Stardust samples contain abundant amorphous silicates in addition to crystalline silicates such as olivine and pyroxene. The presence of crystalline silicates in Wild 2 is consistent with mixing of solar system and interstellar matter. No hydrous silicates or carbonate minerals were detected, which suggests a lack of aqueous processing of Wild 2 dust.

Published
2006
Full Text
View/download PDF

15. Mineralogy and petrology of comet 81P/Wild 2 nucleus samples.

Author

Zolensky ME, Zega TJ, Yano H, Wirick S, Westphal AJ, Weisberg MK, Weber I, Warren JL, Velbel MA, Tsuchiyama A, Tsou P, Toppani A, Tomioka N, Tomeoka K, Teslich N, Taheri M, Susini J, Stroud R, Stephan T, Stadermann FJ, Snead CJ, Simon SB, Simionovici A, See TH, Robert F, Rietmeijer FJ, Rao W, Perronnet MC, Papanastassiou DA, Okudaira K, Ohsumi K, Ohnishi I, Nakamura-Messenger K, Nakamura T, Mostefaoui S, Mikouchi T, Meibom A, Matrajt G, Marcus MA, Leroux H, Lemelle L, Le L, Lanzirotti A, Langenhorst F, Krot AN, Keller LP, Kearsley AT, Joswiak D, Jacob D, Ishii H, Harvey R, Hagiya K, Grossman L, Grossman JN, Graham GA, Gounelle M, Gillet P, Genge MJ, Flynn G, Ferroir T, Fallon S, Fakra S, Ebel DS, Dai ZR, Cordier P, Clark B, Chi M, Butterworth AL, Brownlee DE, Bridges JC, Brennan S, Brearley A, Bradley JP, Bleuet P, Bland PA, and Bastien R

Abstract

The bulk of the comet 81P/Wild 2 (hereafter Wild 2) samples returned to Earth by the Stardust spacecraft appear to be weakly constructed mixtures of nanometer-scale grains, with occasional much larger (over 1 micrometer) ferromagnesian silicates, Fe-Ni sulfides, Fe-Ni metal, and accessory phases. The very wide range of olivine and low-Ca pyroxene compositions in comet Wild 2 requires a wide range of formation conditions, probably reflecting very different formation locations in the protoplanetary disk. The restricted compositional ranges of Fe-Ni sulfides, the wide range for silicates, and the absence of hydrous phases indicate that comet Wild 2 experienced little or no aqueous alteration. Less abundant Wild 2 materials include a refractory particle, whose presence appears to require radial transport in the early protoplanetary disk.

Published
2006
Full Text
View/download PDF

16. Organics captured from comet 81P/Wild 2 by the Stardust spacecraft.

Author

Sandford SA, Aléon J, Alexander CM, Araki T, Bajt S, Baratta GA, Borg J, Bradley JP, Brownlee DE, Brucato JR, Burchell MJ, Busemann H, Butterworth A, Clemett SJ, Cody G, Colangeli L, Cooper G, D'Hendecourt L, Djouadi Z, Dworkin JP, Ferrini G, Fleckenstein H, Flynn GJ, Franchi IA, Fries M, Gilles MK, Glavin DP, Gounelle M, Grossemy F, Jacobsen C, Keller LP, Kilcoyne AL, Leitner J, Matrajt G, Meibom A, Mennella V, Mostefaoui S, Nittler LR, Palumbo ME, Papanastassiou DA, Robert F, Rotundi A, Snead CJ, Spencer MK, Stadermann FJ, Steele A, Stephan T, Tsou P, Tyliszczak T, Westphal AJ, Wirick S, Wopenka B, Yabuta H, Zare RN, and Zolensky ME

Subjects
Carbon analysis, Cosmic Dust analysis, Deuterium analysis, Nitrogen analysis, Nitrogen Isotopes analysis, Oxygen analysis, Polycyclic Aromatic Hydrocarbons analysis, Spacecraft, Meteoroids, Organic Chemicals analysis
Abstract

Organics found in comet 81P/Wild 2 samples show a heterogeneous and unequilibrated distribution in abundance and composition. Some organics are similar, but not identical, to those in interplanetary dust particles and carbonaceous meteorites. A class of aromatic-poor organic material is also present. The organics are rich in oxygen and nitrogen compared with meteoritic organics. Aromatic compounds are present, but the samples tend to be relatively poorer in aromatics than are meteorites and interplanetary dust particles. The presence of deuterium and nitrogen-15 excesses suggest that some organics have an interstellar/protostellar heritage. Although the variable extent of modification of these materials by impact capture is not yet fully constrained, a diverse suite of organic compounds is present and identifiable within the returned samples.

Published
2006
Full Text
View/download PDF

17. Comet 81P/Wild 2 under a microscope.

Author

Brownlee D, Tsou P, Aléon J, Alexander CM, Araki T, Bajt S, Baratta GA, Bastien R, Bland P, Bleuet P, Borg J, Bradley JP, Brearley A, Brenker F, Brennan S, Bridges JC, Browning ND, Brucato JR, Bullock E, Burchell MJ, Busemann H, Butterworth A, Chaussidon M, Cheuvront A, Chi M, Cintala MJ, Clark BC, Clemett SJ, Cody G, Colangeli L, Cooper G, Cordier P, Daghlian C, Dai Z, D'Hendecourt L, Djouadi Z, Dominguez G, Duxbury T, Dworkin JP, Ebel DS, Economou TE, Fakra S, Fairey SA, Fallon S, Ferrini G, Ferroir T, Fleckenstein H, Floss C, Flynn G, Franchi IA, Fries M, Gainsforth Z, Gallien JP, Genge M, Gilles MK, Gillet P, Gilmour J, Glavin DP, Gounelle M, Grady MM, Graham GA, Grant PG, Green SF, Grossemy F, Grossman L, Grossman JN, Guan Y, Hagiya K, Harvey R, Heck P, Herzog GF, Hoppe P, Hörz F, Huth J, Hutcheon ID, Ignatyev K, Ishii H, Ito M, Jacob D, Jacobsen C, Jacobsen S, Jones S, Joswiak D, Jurewicz A, Kearsley AT, Keller LP, Khodja H, Kilcoyne AL, Kissel J, Krot A, Langenhorst F, Lanzirotti A, Le L, Leshin LA, Leitner J, Lemelle L, Leroux H, Liu MC, Luening K, Lyon I, Macpherson G, Marcus MA, Marhas K, Marty B, Matrajt G, McKeegan K, Meibom A, Mennella V, Messenger K, Messenger S, Mikouchi T, Mostefaoui S, Nakamura T, Nakano T, Newville M, Nittler LR, Ohnishi I, Ohsumi K, Okudaira K, Papanastassiou DA, Palma R, Palumbo ME, Pepin RO, Perkins D, Perronnet M, Pianetta P, Rao W, Rietmeijer FJ, Robert F, Rost D, Rotundi A, Ryan R, Sandford SA, Schwandt CS, See TH, Schlutter D, Sheffield-Parker J, Simionovici A, Simon S, Sitnitsky I, Snead CJ, Spencer MK, Stadermann FJ, Steele A, Stephan T, Stroud R, Susini J, Sutton SR, Suzuki Y, Taheri M, Taylor S, Teslich N, Tomeoka K, Tomioka N, Toppani A, Trigo-Rodríguez JM, Troadec D, Tsuchiyama A, Tuzzolino AJ, Tyliszczak T, Uesugi K, Velbel M, Vellenga J, Vicenzi E, Vincze L, Warren J, Weber I, Weisberg M, Westphal AJ, Wirick S, Wooden D, Wopenka B, Wozniakiewicz P, Wright I, Yabuta H, Yano H, Young ED, Zare RN, Zega T, Ziegler K, Zimmerman L, Zinner E, and Zolensky M

Abstract

The Stardust spacecraft collected thousands of particles from comet 81P/Wild 2 and returned them to Earth for laboratory study. The preliminary examination of these samples shows that the nonvolatile portion of the comet is an unequilibrated assortment of materials that have both presolar and solar system origin. The comet contains an abundance of silicate grains that are much larger than predictions of interstellar grain models, and many of these are high-temperature minerals that appear to have formed in the inner regions of the solar nebula. Their presence in a comet proves that the formation of the solar system included mixing on the grandest scales.

Published
2006
Full Text
View/download PDF

18. Organic globules in the Tagish Lake meteorite: remnants of the protosolar disk.

Author

Nakamura-Messenger K, Messenger S, Keller LP, Clemett SJ, and Zolensky ME

Subjects
Carbon Isotopes analysis, Deuterium analysis, Ice, Nitrogen Isotopes analysis, Oxygen analysis, Temperature, Ultraviolet Rays, Carbon analysis, Hydrogen analysis, Meteoroids, Nitrogen analysis
Abstract

Coordinated transmission electron microscopy and isotopic measurements of organic globules in the Tagish Lake meteorite shows that they have elevated ratios of nitrogen-15 to nitrogen-14 (1.2 to 2 times terrestrial) and of deuterium to hydrogen (2.5 to 9 times terrestrial). These isotopic anomalies are indicative of mass fractionation during chemical reactions at extremely low temperatures (10 to 20 kelvin), characteristic of cold molecular clouds and the outer protosolar disk. The globules probably originated as organic ice coatings on preexisting grains that were photochemically processed into refractory organic matter. The globules resemble cometary carbon, hydrogen, oxygen, and nitrogen (CHON) particles, suggesting that such grains were important constituents of the solar system starting materials.

Published
2006
Full Text
View/download PDF

19. Supernova olivine from cometary dust.

Author

Messenger S, Keller LP, and Lauretta DS

Subjects
Crystallization, Isotopes analysis, Nitrogen analysis, Nitrogen Isotopes analysis, Oxygen Isotopes analysis, Silicon analysis, Temperature, Cosmic Dust analysis, Iron Compounds analysis, Magnesium Compounds analysis, Meteoroids, Silicates analysis
Abstract

An interplanetary dust particle contains a submicrometer crystalline silicate aggregate of probable supernova origin. The grain has a pronounced enrichment in 18O/16O (13 times the solar value) and depletions in 17O/16O (one-third solar) and 29Si/28Si (<0.8 times solar), indicative of formation from a type II supernova. The aggregate contains olivine (forsterite 83) grains <100 nanometers in size, with microstructures that are consistent with minimal thermal alteration. This unusually iron-rich olivine grain could have formed by equilibrium condensation from cooling supernova ejecta if several different nucleosynthetic zones mixed in the proper proportions. The supernova grain is also partially encased in nitrogen-15-rich organic matter that likely formed in a presolar cold molecular cloud.

Published
2005
Full Text
View/download PDF

20. Samples of stars beyond the solar system: silicate grains in interplanetary dust.

Author

Messenger S, Keller LP, Stadermann FJ, Walker RM, and Zinner E

Subjects
Astronomical Phenomena, Carbon, Meteoroids, Solar System, Temperature, Astronomy, Cosmic Dust, Oxygen Isotopes, Silicates
Abstract

We have identified six circumstellar silicate grains within interplanetary dust particles (IDPs). Their extrasolar origins are demonstrated by their extremely anomalous oxygen isotopic compositions. Three 17O-rich grains appear to originate from red giant or asymptotic giant branch stars. One 16O-rich grain may be from a metal-poor star. Two 16O-poor grains have unknown stellar sources. One of the grains is forsterite, and two are amorphous silicate "GEMS" (glass with embedded metal and sulfides), which is consistent with astronomical identifications of crystalline and amorphous silicates in the outflows of evolved stars. These observations suggest cometary origins of these IDPs and underscore the perplexing absence of silicates among circumstellar dust grains from meteorites.

Published
2003
Full Text
View/download PDF

21. Identification of iron sulphide grains in protoplanetary disks.

Author

Keller LP, Hony S, Bradley JP, Molster FJ, Waters LB, Bouwman J, De Koter A, Brownlee DE, Flynn GJ, Henning T, and Mutschke H

Abstract

Sulphur is depleted in cold dense molecular clouds with embedded young stellar objects, indicating that most of it probably resides in solid grains. Iron sulphide grains are the main sulphur species in cometary dust particles, but there has been no direct evidence for FeS in astronomical sources, which poses a considerable problem, because sulphur is a cosmically abundant element. Here we report laboratory infrared spectra of FeS grains from primitive meteorites, as well as from pyrrhotite ([Fe, Ni](1-x)S) grains in interplanetary dust, which show a broad FeS feature centred at approximately 23.5 micrometres. A similar broad feature is seen in the infrared spectra of young stellar objects, implying that FeS grains are an important but previously unrecognized component of circumstellar dust. The feature had previously been attributed to FeO. The observed astronomical line strengths are generally consistent with the depletion of sulphur from the gas phase, and with the average Galactic sulphur/silicon abundance ratio. We conclude that the missing sulphur has been found.

Published
2002
Full Text
View/download PDF

22. An infrared spectral match between GEMS and interstellar grains.

Author

Bradley JP, Keller LP, Snow TP, Hanner MS, Flynn GJ, Gezo JC, Clemett SJ, Brownlee DE, and Bowey JE

Subjects
Meteoroids, Spectrophotometry, Infrared, Cosmic Dust, Magnesium Silicates chemistry, Silicates chemistry
Abstract

Infrared spectral properties of silicate grains in interplanetary dust particles (IDPs) were compared with those of astronomical silicates. The approximately 10-micrometer silicon-oxygen stretch bands of IDPs containing enstatite (MgSiO3), forsterite (Mg2SiO4), and glass with embedded metal and sulfides (GEMS) exhibit fine structure and bandwidths similar to those of solar system comets and some pre-main sequence Herbig Ae/Be stars. Some GEMS exhibit a broad, featureless silicon-oxygen stretch band similar to those observed in interstellar molecular clouds and young stellar objects. These GEMS provide a spectral match to astronomical "amorphous" silicates, one of the fundamental building blocks from which the solar system is presumed to have formed.

Published
1999
Full Text
View/download PDF

25. Aqueous alteration of the Bali CV3 chondrite: evidence from mineralogy, mineral chemistry, and oxygen isotopic compositions.

Author

Keller LP, Thomas KL, Clayton RN, Mayeda TK, DeHart JM, and McKay DS

Subjects
Calcium Phosphates analysis, Ferrosoferric Oxide, Iron analysis, Iron Compounds analysis, Magnesium Compounds analysis, Microscopy, Electron, Minerals analysis, Oxides analysis, Oxygen Isotopes, Silicates analysis, Geology methods, Meteoroids
Abstract

A petrographic, geochemical, and oxygen isotopic study of the Bali CV3 carbonaceous chondrite revealed that the meteorite has undergone extensive deformation and aqueous alteration on its parent body. Deformation textures are common and include flattened chondrules, a well-developed foliation, and the presence of distinctive (100) planar defects in olivine. The occurrence of alteration products associated with the planar defects indicates that the deformation features formed prior to the episode of aqueous alteration. The secondary minerals produced during the alteration event include well-crystallized Mg-rich saponite, framboidal magnetite, and Ca-phosphates. The alteration products are not homogeneously distributed throughout the meteorite, but occur in regions adjacent to relatively unaltered material, such as veins of altered material following the foliation. The alteration assemblage formed under oxidizing conditions at relatively low temperatures (<100 degrees C). Altered regions in Bali have higher Na, Ca, and P contents than unaltered regions which suggests that the fluid phase carried significant dissolved solids. Oxygen isotopic compositions for unaltered regions in Bali fall within the field for other CV3 whole-rocks, however, the oxygen isotopic compositions of the heavily altered material lie in the region for the CM and CR chondrites. The heavy-isotope enrichment of the altered regions in Bali suggest alteration conditions similar to those for the petrographic type-2 carbonaceous chondrites.

Published
1994
Full Text
View/download PDF

27. Discovery of vapor deposits in the lunar regolith.

Author

Keller LP and McKay DS

Abstract

Lunar soils contain micrometer-sized mineral grains surrounded by thin amorphous rims. Similar features have been produced by exposure of pristine grains to a simulated solar wind, leading to the widespread belief that the amorphous rims result from radiation damage. Electron microscopy studies show, however, that the amorphous rims are compositionally distinct from their hosts and consist largely of vapor-deposited material generated by micrometeorite impacts into the lunar regolith. Vapor deposits slow the lunar erosion rate by solar wind sputtering, influence the optical properties of the lunar regolith, and may account for the presence of sodium and potassium in the lunar atmosphere.

Published
1993
Full Text
View/download PDF

28. Carbon abundance and silicate mineralogy of anhydrous interplanetary dust particles.

Author

Thomas KL, Blanford GE, Keller LP, Klock W, and McKay DS

Subjects
Astronomy methods, Extraterrestrial Environment, Iron Compounds chemistry, Magnesium Compounds chemistry, Meteoroids, Microscopy, Electron, Minor Planets, Carbon chemistry, Cosmic Dust analysis, Minerals chemistry, Silicates chemistry, Software
Abstract

We have studied nineteen anhydrous chondritic interplanetary dust particles (IDPs) using analytical electron microscopy. We have determined a method for quantitative light element EDX analysis of small particles and have applied these techniques to a group of IDPs. Our results show that some IDPs have significantly higher bulk carbon abundances than do carbonaceous chondrites. We have also identified a relationship between carbon abundance and silicate mineralogy in our set of anhydrous IDPs. In general, these particles are dominated by pyroxene, olivine, or a subequal mixture of olivine and pyroxene. The pyroxene-dominated IDPs have a higher carbon abundance than those dominated by olivines. Members of the mixed mineralogy IDPs can be grouped with either the pyroxene- or olivine-dominated particles based on their carbon abundance. The high carbon, pyroxene-dominated particles have primitive mineralogies and bulk compositions which show strong similarities to cometary dust particles. We believe that the lower carbon, olivine-dominated IDPs are probably derived from asteroids. Based on carbon abundances, the mixed-mineralogy group represents particles derived from either comets or asteroids. We believe that the high carbon, pyroxene-rich anhydrous IDPs are the best candidates for cometary dust.

Published
1993
Full Text
View/download PDF

29. Calcic micas in the allende meteorite: evidence for hydration reactions in the early solar nebula.

Author

Keller LP and Buseck PR

Abstract

Two calcic micas, clintonite and margarite, have been identified in alteration products in a calcium- and aluminum-rich inclusion (CAI) in the Allende meteorite. Clintonite replaces grossular in alteration veins, and margarite occurs as lamellae in anorthite. Their occurrence suggests that, in addition to undergoing high-temperature alteration by a volatile and iron-rich vapor that produced the grossular and anorthite, some CAIs underwent alteration at moderate temperatures (

Published
1991
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results