Search Results - "Keller, H U"

H₂O at the Phoenix Landing Site by Smith, P.H, Tamppari, L.K, Arvidson, R.E, Bass, D, Blaney, D, Boynton, W.V, Carswell, A, Catling, D.C, Clark, B.C, Duck, T, DeJong, E, Fisher, D, Goetz, W, Gunnlaugsson, H.P, Hecht, M.H, Hipkin, V, Hoffman, J, Hviid, S.F, Keller, H.U, Kounaves, S.P, Lange, C.F, Lemmon, M.T, Madsen, M.B, Markiewicz, W.J, Marshall, J, McKay, C.P, Mellon, M.T, Ming, D.W, Morris, R.V, Pike, W.T, Renno, N, Staufer, U, Stoker, C, Taylor, P, Whiteway, J.A, Zent, A.P

“…The Phoenix mission investigated patterned ground and weather in the northern arctic region of Mars for 5 months starting 25 May 2008 (solar longitude between…”
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Dark material on Vesta from the infall of carbonaceous volatile-rich material by McCord, T. B., Li, J.-Y., Combe, J.-P., McSween, H. Y., Jaumann, R., Reddy, V., Tosi, F., Williams, D. A., Blewett, D. T., Turrini, D., Palomba, E., Pieters, C. M., De Sanctis, M. C., Ammannito, E., Capria, M. T., Le Corre, L., Longobardo, A., Nathues, A., Mittlefehldt, D. W., Schröder, S. E., Hiesinger, H., Beck, A. W., Capaccioni, F., Carsenty, U., Keller, H. U., Denevi, B. W., Sunshine, J. M., Raymond, C. A., Russell, C. T.

“…From spectra and images of Vesta, it is suggested that the dark patches on Vesta are formed of infalling hydrated carbonaceous material and the bright patches…”
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Morphology and dynamics of the upper cloud layer of Venus by Jaumann, R, Titov, D. V, Keller, H. U, Thomas, N, Russo, P, Michalik, H, Moissl, R, Limaye, S. S, Markiewicz, W. J, Ignatiev, N

“…Venus is completely covered by a thick cloud layer, of which the upper part is composed of sulphuric acid and some unknown aerosols. The cloud tops are in fast…”
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The Dawn Framing Camera by Sierks, H., Keller, H. U., Jaumann, R., Michalik, H., Behnke, T., Bubenhagen, F., Büttner, I., Carsenty, U., Christensen, U., Enge, R., Fiethe, B., Gutiérrez Marqués, P., Hartwig, H., Krüger, H., Kühne, W., Maue, T., Mottola, S., Nathues, A., Reiche, K.-U., Richards, M. L., Roatsch, T., Schröder, S. E., Szemerey, I., Tschentscher, M.

“…The Framing Camera (FC) is the German contribution to the Dawn mission. The camera will map 4 Vesta and 1 Ceres through a clear filter and 7 band-pass filters…”
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Rain, winds and haze during the Huygens probe's descent to Titan's surface by Dafoe, L. E, Coustenis, A, Schmitt, B, Smith, P, Gliem, F, de Bergh, C, Rueffer, P, Küppers, M, Tomasko, M. G, Lemmon, M, Rizk, B, Schröder, S. E, Grieger, B, Karkoschka, E, Moores, J, Prout, G. M, Holso, K, McFarlane, E, Rosiek, M, Bézard, B, Thomas, N, Engel, S, Eibl, A, Lellouch, E, Howington-Kraus, E, Soderblom, L, Archinal, B, Doose, L, Kirk, R, Cook, D, Kramm, R, Lanagan, P, Keller, H. U, See, C, Becker, T, West, R, Bushroe, M, Combes, M, Lunine, J, Douté, S

“…The irreversible conversion of methane into higher hydrocarbons in Titan's stratosphere implies a surface or subsurface methane reservoir. Recent measurements…”
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The Dawn Topography Investigation by Raymond, C. A., Jaumann, R., Nathues, A., Sierks, H., Roatsch, T., Preusker, E, Scholten, F., Gaskell, R. W., Jorda, L., Keller, H.-U., Zuber, M. T., Smith, D. E., Mastrodemos, N., Mottola, S.

“…The objective of the Dawn topography investigation is to derive the detailed shapes of 4 Vesta and 1 Ceres in order to create orthorectified image mosaics for…”
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Estimating the strength of the nucleus material of comet 67P Churyumov–Gerasimenko by Basilevsky, A. T., Krasil’nikov, S. S., Shiryaev, A. A., Mall, U., Keller, H. U., Skorov, Yu. V., Mottola, S., Hviid, S. F.

“…Consideration is given to the estimates for the strength of the consolidated material forming the bulk of the nucleus of comet 67P Churyumov–Gerasimenko and…”
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Growth and form of planetary seedlings: results from a microgravity aggregation experiment by Blum, J, Wurm, G, Kempf, S, Poppe, T, Klahr, H, Kozasa, T, Rott, M, Henning, T, Dorschner, J, Schräpler, R, Keller, H U, Markiewicz, W J, Mann, I, Gustafson, B A, Giovane, F, Neuhaus, D, Fechtig, H, Grün, E, Feuerbacher, B, Kochan, H, Ratke, L, El Goresy, A, Morfill, G, Weidenschilling, S J, Schwehm, G, Metzler, K, Ip, W H

“…The outcome of the first stage of planetary formation, which is characterized by ballistic agglomeration of preplanetary dust grains due to Brownian motion in…”
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Near-perihelion activity of comet 67P/Churyumov–Gerasimenko. A first attempt of non-static analysis by Skorov, Yu, Keller, H U, Mottola, S, Hartogh, P

“…ABSTRACT The observed rate of water production of comet 67P/Churyumov–Gerasimenko near its perihelion can be approximated by a very steep power function of the…”
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Thermal model of water and CO activity of Comet C/1995 O1 (Hale-Bopp) by Gortsas, N., Kührt, E., Motschmann, U., Keller, H.U.

“…► The CO and water activity of Comet C/1995 O1 (Hale-Bopp) is simulated. ► Erosion due to surface sublimation of water ice is treated as a Stefan Problem. ►…”
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In situ analysis of ice table depth variations in the vicinity of small rocks at the Phoenix landing site by Sizemore, H. G., Mellon, M. T., Searls, M. L., Lemmon, M. T., Zent, A. P., Heet, T. L., Arvidson, R. E., Blaney, D. L., Keller, H. U.

“…Prior to the Phoenix mission, ice stability simulations predicted that surface rocks at the landing site would produce depressions in the ice table (the…”
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Loss of the Surface Layers of Comet Nuclei by Thomas, N., Alexander, C., Keller, H. U.

“…The Deep Impact observations of low thermal inertia for comet 9P/Tempel 1 are of profound importance for the observations to be made by the Rosetta spacecraft…”
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EVOLUTION OF THE DUST SIZE DISTRIBUTION OF COMET 67P/CHURYUMOV-GERASIMENKO FROM 2.2 au TO PERIHELION by Fulle, M., Marzari, F., Della Corte, V., Fornasier, S., Sierks, H., Rotundi, A., Barbieri, C., Lamy, P. L., Rodrigo, R., Koschny, D., Rickman, H., Keller, H. U., López-Moreno, J. J., Accolla, M., Agarwal, J., A'Hearn, M. F., Altobelli, N., Barucci, M. A., Bertaux, J.-L., Bertini, I., Bodewits, D., Bussoletti, E., Colangeli, L., Cosi, M., Cremonese, G., Crifo, J.-F., Da Deppo, V., Davidsson, B., Debei, S., De Cecco, M., Esposito, F., Ferrari, M., Giovane, F., Gustafson, B., Green, S. F., Groussin, O., Grün, E., Gutierrez, P., Güttler, C., Herranz, M. L., Hviid, S. F., Ip, W., Ivanovski, S. L., Jerónimo, J. M., Jorda, L., Knollenberg, J., Kramm, R., Kührt, E., Küppers, M., Lara, L., Lazzarin, M., Leese, M. R., López-Jiménez, A. C., Lucarelli, F., Mazzotta Epifani, E., McDonnell, J. A. M., Mennella, V., Molina, A., Morales, R., Moreno, F., Mottola, S., Naletto, G., Oklay, N., Ortiz, J. L., Palomba, E., Palumbo, P., Perrin, J.-M., Rietmeijer, F. J. M., Rodríguez, J., Sordini, R., Thomas, N., Tubiana, C., Vincent, J.-B., Weissman, P., Wenzel, K.-P., Zakharov, V., Zarnecki, J. C.

“…ABSTRACT The Rosetta probe, orbiting Jupiter-family comet 67P/Churyumov-Gerasimenko, has been detecting individual dust particles of mass larger than 10−10 kg…”
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Microscopy capabilities of the Microscopy, Electrochemistry, and Conductivity Analyzer by Hecht, M. H., Marshall, J., Pike, W. T., Staufer, U., Blaney, D., Braendlin, D., Gautsch, S., Goetz, W., Hidber, H.-R., Keller, H. U., Markiewicz, W. J., Mazer, A., Meloy, T. P., Morookian, J. M., Mogensen, C., Parrat, D., Smith, P., Sykulska, H., Tanner, R. J., Reynolds, R. O., Tonin, A., Vijendran, S., Weilert, M., Woida, P. M.

“…The Phoenix microscopy station, designed for the study of Martian dust and soil, consists of a sample delivery system, an optical microscope, and an atomic…”
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Phoenix soil physical properties investigation by Shaw, Amy, Arvidson, Raymond E., Bonitz, Robert, Carsten, Joseph, Keller, H. U., Lemmon, Mark T., Mellon, Michael T., Robinson, Matthew, Trebi-Ollennu, Ashitey

“…The Phoenix Lander investigated the polygonal terrain and associated soil and icy soil deposits of a high northern latitude site on Mars. The soil physical…”
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Time variability and heterogeneity in the coma of 67P/Churyumov-Gerasimenko by Hässig, M., Altwegg, K., Balsiger, H., Bar-Nun, A., Berthelier, J. J., Bieler, A., Bochsler, P., Briois, C., Calmonte, U., Combi, M., De Keyser, J., Eberhardt, P., Fiethe, B., Fuselier, S. A., Galand, M., Gasc, S., Gombosi, T. I., Hansen, K. C., Jäckel, A., Keller, H. U., Kopp, E., Korth, A., Kührt, E., Le Roy, L., Mall, U., Marty, B., Mousis, O., Neefs, E., Owen, T., Rème, H., Rubin, M., Sémon, T., Tornow, C., Tzou, C.-Y., Waite, J. H., Wurz, P.

“…Comets contain the best-preserved material from the beginning of our planetary system. Their nuclei and comae composition reveal clues about physical and…”
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The Spectrum of Comet Hale-Bopp (C/1995 01) Observed with the Infrared Space Observatory at 2.9 Astronomical Units from the Sun by Crovisier, Jacques, Leech, Kieron, Bockelée-Morvan, Dominique, Brooke, Timothy Y., Hanner, Martha S., Altieri, Bruno, Keller, H. Uwe, Lellouch, Emmanuel

“…Comet Hale-Bopp (C/1995 O1) was observed at wavelengths from 2.4 to 195 micrometers with the Infrared Space Observatory when the comet was about 2.9…”
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Dawn at Vesta: Testing the Protoplanetary Paradigm by Russell, C. T., Raymond, C. A., Coradini, A., McSween, H. Y., Zuber, M. T., Nathues, A., De Sanctis, M. C., Jaumann, R., Konopliv, A. S., Preusker, F., Asmar, S. W., Park, R. S., Gaskell, R., Keller, H. U., Mottola, S., Roatsch, T., Scully, J. E. C., Smith, D. E., Tricarico, P., Toplis, M. J., Christensen, U. R., Feldman, W. C., Lawrence, D. J., McCoy, T. J., Prettyman, T. H., Reedy, R. C., Sykes, M. E., Titus, T. N.

“…The Dawn spacecraft targeted 4 Vesta, believed to be a remnant intact protoplanet from the earliest epoch of solar system formation, based on analyses of…”
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Phoenix Robotic Arm Camera by Keller, H. U., Goetz, W., Hartwig, H., Hviid, S. F., Kramm, R., Markiewicz, W. J., Reynolds, R., Shinohara, C., Smith, P., Tanner, R., Woida, P., Woida, R., Bos, B. J., Lemmon, M. T.

“…The Phoenix Robotic Arm Camera (RAC) is a variable‐focus color camera mounted to the Robotic Arm (RA) of the Phoenix Mars Lander. It is designed to acquire…”
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Rosetta's comet 67P/Churyumov-Gerasimenko sheds its dusty mantle to reveal its icy nature by Fornasier, S., Mottola, S., Keller, H. U., Barucci, M. A., Davidsson, B., Feller, C., Deshapriya, J. D. P., Sierks, H., Barbieri, C., Lamy, P. L., Rodrigo, R., Koschny, D., Rickman, H., A'Hearn, M., Agarwal, J., Bertaux, J.-L., Bertini, I., Besse, S., Cremonese, G., Da Deppo, V., Debei, S., De Cecco, M., Deller, J., EI-Maarry, M. R., Fulle, M., Groussin, O., Gutierrez, P. J., Güttler, C., Hofmann, M., Hviid, S. F., Ip, W.-H., Jorda, L., Knollenberg, J., Kovacs, G., Kramm, R., Kührt, E., Küppers, M., Lara, M. L., Lazzarin, M., Moreno, J. J. Lopez, Marzari, F., Massironi, M., Naletto, G., Oklay, N., Pajola, M., Pommerol, A., Preusker, F., Scholten, F., Shi, X., Thomas, N., Toth, I., Tubiana, C., Vincent, J.-B.

“…The Rosetta spacecraft has investigated comet 67P/Churyumov-Gerasimenko from large heliocentric distances to its perihelion passage and beyond. We trace the…”
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