Spectral Analysis of the Cerean Geological Unit Crater Central Peak Material As an Indicator of Subsurface Mineral Composition T ⁎ A
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POSTER SESSION I: CERES: MISSION RESULTS from DAWN 6:00 P.M
Lunar and Planetary Science XLVIII (2017) sess312.pdf Tuesday, March 21, 2017 [T312] POSTER SESSION I: CERES: MISSION RESULTS FROM DAWN 6: 00 p.m. Town Center Exhibit Area Russell C. T. Raymond C. A. De Sanctis M. C. Nathues A. Prettyman T. H. et al. POSTER LOCATION #171 Dawn at Ceres: What We Have Learned [#1269] A summary of the major discoveries and their implications at the close of the exploration of Ceres by Dawn. Ermakov A. I. Park R. S. Zuber M. T. Smith D. E. Fu R. R. et al. POSTER LOCATION #172 Regional Analysis of Ceres’ Gravity Anomalies [#1374] Put in geological and geomorphological context, the regional gravity anomalies give clues on the structure and evolution of Ceres’ crust. Nathues A. Platz T. Thangjam G. Hoffmann M. Mengel K. et al. POSTER LOCATION #173 Evolution of Occator Crater on (1) Ceres [#1385] We present recent results on the origin and evolution of the bright spots (Cerealia and Vinalia Faculae) at crater Occator on (1) Ceres. Buczkowski D. L. Scully J. E. C. Schenk P. M. Ruesch O. von der Gathen I. et al. POSTER LOCATION #174 Tectonic Analysis of Fracturing Associated with Occator Crater [#1488] The floor, walls, and ejecta of Occator Crater on Ceres are cut by multiple sets of linear and concentric fractures. We explore possible formation mechanisms. Pasckert J. H. Hiesinger H. Raymond C. A. Russell C. POSTER LOCATION #175 Degradation and Ejecta Mobility of Impact Craters on Ceres [#1377] We investigated the degradation and ejecta mobility of craters on Ceres, to investigate latitudinal variations, and to compare it with other planetary bodies. -
March 21–25, 2016
FORTY-SEVENTH LUNAR AND PLANETARY SCIENCE CONFERENCE PROGRAM OF TECHNICAL SESSIONS MARCH 21–25, 2016 The Woodlands Waterway Marriott Hotel and Convention Center The Woodlands, Texas INSTITUTIONAL SUPPORT Universities Space Research Association Lunar and Planetary Institute National Aeronautics and Space Administration CONFERENCE CO-CHAIRS Stephen Mackwell, Lunar and Planetary Institute Eileen Stansbery, NASA Johnson Space Center PROGRAM COMMITTEE CHAIRS David Draper, NASA Johnson Space Center Walter Kiefer, Lunar and Planetary Institute PROGRAM COMMITTEE P. Doug Archer, NASA Johnson Space Center Nicolas LeCorvec, Lunar and Planetary Institute Katherine Bermingham, University of Maryland Yo Matsubara, Smithsonian Institute Janice Bishop, SETI and NASA Ames Research Center Francis McCubbin, NASA Johnson Space Center Jeremy Boyce, University of California, Los Angeles Andrew Needham, Carnegie Institution of Washington Lisa Danielson, NASA Johnson Space Center Lan-Anh Nguyen, NASA Johnson Space Center Deepak Dhingra, University of Idaho Paul Niles, NASA Johnson Space Center Stephen Elardo, Carnegie Institution of Washington Dorothy Oehler, NASA Johnson Space Center Marc Fries, NASA Johnson Space Center D. Alex Patthoff, Jet Propulsion Laboratory Cyrena Goodrich, Lunar and Planetary Institute Elizabeth Rampe, Aerodyne Industries, Jacobs JETS at John Gruener, NASA Johnson Space Center NASA Johnson Space Center Justin Hagerty, U.S. Geological Survey Carol Raymond, Jet Propulsion Laboratory Lindsay Hays, Jet Propulsion Laboratory Paul Schenk, -
Oxo Crater on (1) Ceres: Geological History and the Role of Water-Ice
The Astronomical Journal, 154:84 (13pp), 2017 September https://doi.org/10.3847/1538-3881/aa7a04 © 2017. The American Astronomical Society. All rights reserved. Oxo Crater on (1) Ceres: Geological History and the Role of Water-ice A. Nathues1, T. Platz1, M. Hoffmann1, G. Thangjam1, E. A. Cloutis2, D. M. Applin2, L. Le Corre1,3, V. Reddy1,4, K. Mengel5, S. Protopapa6, D. Takir7, F. Preusker8, B. E. Schmidt9, and C. T. Russell10 1 Max Planck Institute for Solar System Research, Justus-von-Liebig-Weg 3, D-37077 Goettingen, Germany; [email protected] 2 University of Winnipeg, Winnipeg, MB R3B 2E9, Canada 3 Planetary Science Institute, 1700 East Fort Lowell Rd, Suite 106, Tucson, AZ 85719-2395, USA 4 Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA 5 IELF, TU Clausthal, Adolph-Roemer-Straße 2A, D-38678 Clausthal-Zellerfeld, Germany 6 University of Maryland, Department of Astronomy, College Park, MD 20742, USA 7 SETI Institute, Mountain View, CA 94043, USA 8 German Aerospace Center (DLR), Institute of Planetary Research, D-12489 Berlin, Germany 9 Georgia Institute of Technology, Atlanta, GA, USA 10 Institute of Geophysics and Planetary Physics, Dept. of Earth, Planetary and Space Sciences, University of California Los Angeles, Los Angeles, CA, USA Received 2017 March 1; revised 2017 June 14; accepted 2017 June 14; published 2017 August 4 Abstract Dwarf planet Ceres (∅∼940 km) is the largest object in the main asteroid belt. Investigations suggest that Ceres is a thermally evolved, volatile-rich body with potential geological activity, a body that was never completely molten, but one that possibly partially differentiated into a rocky core and an ice-rich mantle, and may contain remnant internal liquid water. -
THE PLANETARY REPORT JUNE SOLSTICE 2016 VOLUME 36, NUMBER 2 Planetary.Org
THE PLANETARY REPORT JUNE SOLSTICE 2016 VOLUME 36, NUMBER 2 planetary.org ILLUMINATING CERES DAWN SHEDS NEW LIGHT ON AN ENIGMATIC WORLD BREAKTHROUGH STARSHOT C LIGHTSAIL 2 TEST C MEMBERSHIP UPGRADES SNAPSHOTS FROM SPACE EMILY STEWART LAKDAWALLA blogs at planetary.org/blog. Black Sands of Mars ON SOL 1192 (December 13, 2015), Curiosity approached the side of Namib, a Faccin and Marco Bonora Image: NASA/JPL/MSSS/Elisabetta massive barchan sand dune. Namib belongs to a field of currently active dark basaltic sand dunes that form a long barrier between the rover and the tantalizing rocks of Mount Sharp. This view, processed by Elisabetta Bonora and Marco Faccin, features wind-carved yardangs (crests or ridges ) of Mount Sharp in the background. After taking this set of photos, Curiosity went on to sample sand from the dune, and it is now working its way through a gap in the dune field on the way to the mountain. —Emily Stewart Lakdawalla SEE MORE AMATEUR-PROCESSED SPACE IMAGES planetary.org/amateur SEE MORE EVERY DAY! planetary.org/blogs 2 THE PLANETARY REPORT C JUNE SOLSTICE 2016 CONTENTS JUNE SOLSTICE 2016 COVER STORY Unveiling Ceres 6 Simone Marchi on why Ceres is a scientific treasure chest for Dawn. Pathway to the Stars Looking back at years of Society-led solar sail 10 development as Breakthrough Starshot is announced. Life, the Universe, and Everything 13 Planetary Radio in Death Valley. ADVOCATING FOR SPACE Partisan Peril 18 Casey Dreier looks at the U.S. President’s impact on space policy and legislation. DEVELOPMENTS IN SPACE SCIENCE Update on LightSail 2 20 Bruce Betts details the progress we’ve made in the year since LightSail 1 launched. -
Fracture Geometry and Statistics of Ceres' Floor Fractures
1 Fracture Geometry and Statistics of Ceres’ Floor Fractures 2 3 K. Krohn1, D. L. Buczkowski2, I. von der Gathen1, R. Jaumann1,3, F. Schulzeck1, K. Stephan1, R. 4 Wagner1, J. E. C. Scully4, C. A. Raymond4, C. T. Russell5 5 6 1Institute of Planetary Research, German Aerospace Center, Berlin, Germany; 2Johns Hopkins 7 University Applied Physics Laboratory, Laurel, MD, USA; 3Freie Universiät Berlin, Germany; 8 4NASA JPL, California Institute of Technology, Pasadena, California, USA; 5UCLA, Institute of 9 Geophysics, Los Angeles, CA, USA 10 11 Corresponding author: Katrin Krohn, [email protected], Rutherfordstraße 2, 12489 Berlin, Germany 12 13 Keywords: Ceres, dwarf planet, floor fractured craters 14 15 16 Highlights: 17 18 We measured 2336 fractures in thirteen floor-fractured craters (FFC) on Ceres. 19 20 Floor-fractured craters on Ceres share similarities with FFCs on other planetary bodies 21 especially those on the Moon and Mars. 22 23 On Ceres some floor-fractured craters are impact-driven; other appear to be related to cooling- 24 melting processes, outgassing and/or tectonics such as doming of the subsurface. 25 26 Fracture studies point out brittle surface materials. 27 28 29 30 Abstract 31 32 Floor-fractured craters are one of the most distinct features on Ceres. Most of the fractures are located 33 on the crater floors. The floor-fractures are concentric, radial or polygonal and share similarities with 34 Class 1 and 4 floor-fractured craters (FFC) on the Moon (e.g., Buczkowski et al., 2018; Schultz, 1976) 35 In total we measured 2336 fractures in thirteen craters. -
Mineralogical Mapping of the Kerwan Quadrangle on Ceres
Icarus 318 (2019) 188–194 Contents lists available at ScienceDirect Icarus journal homepage: www.elsevier.com/locate/icarus Mineralogical mapping of the Kerwan quadrangle on Ceres ∗ E. Palomba a,e, , A. Longobardo a, M.C. De Sanctis a, F.G. Carrozzo a, A. Galiano a,b, F. Zambon a, A. Raponi a, M. Ciarniello a, K. Stephan c, D.A. Williams d, E. Ammannito a,g, M.T. Capria a,e, S. Fonte a, M. Giardino a, F. Tosi a, C.A. Raymond f, C.T. Russell g a Istituto di Astrofisica e Planetologia Spaziali, INAF, via del fosso del Cavaliere, 100, 00133, Rome, Italy b Università di Roma Tor Vergata, Department of Physics, via della ricerca scientifica, 1, 00133 Rome, Italy c Institute of Planetary Research, German Aerospace Center (DLR), Rutherfordstrasse 2, d-12489 Berlin, Germany d School of Earth & Space Exploration, Arizona State University, Tempe, AZ 85287-1404, USA e Space Science Data Center (SSDC) - Agenzia Spaziale Italiana (ASI), Via del Politecnico snc, Edificio D, 00133 Roma, Italy f Jet Propulsion Laboratory, Pasadena, CA 91109, USA g Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA 90095-1567, USA a r t i c l e i n f o a b s t r a c t Article history: The Ceres surface is globally composed of Mg-phyllosilicates, ammoniated clays, carbonates and dark Received 28 April 2017 components. To obtain a more detailed mineralogical and geological investigation, the dwarf planet sur- Revised 11 July 2017 face has been divided into fifteen quadrangles. The aim of this work is to investigate the abundance of Accepted 25 July 2017 phyllosilicates and ammoniated clays in the Kerwan quadrangle, classified as Ac-H-7 and spanning from Available online 25 July 2017 22 °S to 22 °N in latitude and from 72 °E to 144 °E in longitude. -
Surface Processes and Space Weathering on Ceres
47th Lunar and Planetary Science Conference (2016) 1383.pdf SURFACE PROCESSES AND SPACE WEATHERING AT CERES. C. M. Pieters1, E. Ammannito2,3, M. Ciarniello3, M. C. De Sanctis3, M. Hoffman4, R. Jaumann5, T. B. McCord6, L. A. McFadden7, S. Mest8, A. Nathues4, A. Raponi3, C. A. Raymond9, C. T. Russell3, M. Schaefer4, P. Schenk10 , 1Dept. Earth, Environmental, and Planetary Science, Brown Univ., Providence, RI 02912 ([email protected]); 2UCLA CA; 3IAPS, INAF Italy; 4MPS Germany; 5DLR Germany; 6Bear Fight Inst. WA; 7Goddard MD; 8PSI AZ; 9JPL CA; 10LPI TX Introduction: When Dawn arrived at Ceres in 2015 it found a unique and perplexing ice-rock dwarf planet [1]. As anticipated, the overall surface is very dark, but small local areas exhibit unexpectedly bright materials that are likely indigenous in origin [2]. Near-infrared spectroscopic analyses identified the presence of am- moniated phyllosilicates (which are typically associated with the outer solar system) [3], and these were shown to be present everywhere across the surface although their relative abundance varies regionally [4]. The sur- face is heavily cratered, except for the largest craters [5], allowing relative ages to be derived [6]. The most recent craters often exhibit rays as well as local spectral properties that are relatively blue (440-960 nm) com- pared to their surroundings [2, 7]. Fresh craters that ex- hibit regular but distinct optical properties compared to similar but older areas is a characteristic indication that some form of alteration, or space weathering, occurs with time across the surface that transforms freshly ex- posed material into background soils. Fresh craters at Ceres. -
Geologic Mapping of the Ac-H-11 Sintana Quadrangle of Ceres from Nasa’S Dawn Mission
47th Lunar and Planetary Science Conference (2016) 1955.pdf GEOLOGIC MAPPING OF THE AC-H-11 SINTANA QUADRANGLE OF CERES FROM NASA’S DAWN MISSION. F. Schulzeck1, K. Krohn1, R. Jaumann1, D. A. Williams2, D. L. Buczkowski3, S. C. Mest4, J. E. C. Scully5, I. v. d. Gathen1, E. Kersten1, K.-D. Matz1, A. Naß1, K. Otto1, C. M. Pieters6, F. Preusker1, T. Roatsch1, M. C. De Sanctis7, P. Schenk8, S. Schröder1, K. Stephan1, R. Wagner1, C. A. Raymond5, C. T. Russell9, 1DLR, Berlin, Germany; 2School of Earth & Space Exploration, Arizona State University, Tempe, AZ, USA; 3JHU-APL, Laurel, MD, USA; 4Planetary Science Institute, Tucson, AZ, USA; 5Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA; 6Department of Earth, Environmental, and Planetary Sciences Brown University, Providence, RI, USA; 7National Institute of Astrophysics, Rome, Italy; 8Lunar and Planetary Institute, Houston, TX, USA; 9UCLA, Los Angeles, CA, USA Introduction: NASA’s Dawn spacecraft arrived at cratering on the primary crater rim. Annona crater Ceres on March 5, 2015, and has been studying the features both characteristics. Whereas collapse dwarf planet through a series of successively lower structures are mostly blocky, Annona’s landslide, orbits, obtaining morphological & topographical triggered by a younger crater on its rim, is image, mineralogical, elemental, and gravity data. The characterized by lobate margins. The occurrence of Dawn Science Team is conducting a geologic mapping mass movements and the type of mass wasting feature campaign for Ceres similar to that done for Vesta [1, might therefore hint to compositional differences. For 2], including production of a Survey- and High complex craters, such as Darzamat and Mondamin, we Altitude Mapping Orbit (HAMO)-based global map, observe many different inner crater structures, like relaxed crater floors, ridges, central peaks, mounds and and a series of 15 Low Altitude Mapping Orbit smooth plains. -
Planetary Geologic Mappers Annual Meeting
Program Planetary Geologic Mappers Annual Meeting June 12–14, 2019 • Flagstaff, Arizona Institutional Support Lunar and Planetary Institute Universities Space Research Association U.S. Geological Survey, Astrogeology Science Center Conveners David Williams Arizona State University James Skinner U.S. Geological Survey Science Organizing Committee David Williams Arizona State University James Skinner U.S. Geological Survey Lunar and Planetary Institute 3600 Bay Area Boulevard Houston TX 77058-1113 Abstracts for this meeting are available via the meeting website at www.hou.usra.edu/meetings/pgm2019/ Abstracts can be cited as Author A. B. and Author C. D. (2019) Title of abstract. In Planetary Geologic Mappers Annual Meeting, Abstract #XXXX. LPI Contribution No. 2154, Lunar and Planetary Institute, Houston. Guide to Sessions Wednesday, June 12, 2019 8:30 a.m. Introduction and Mercury, Venus, and Lunar Maps 1:30 p.m. Mars Volcanism and Cratered Terrains 3:45 p.m. Mars Fluvial, Tectonics, and Landing Sites 5:30 p.m. Poster Session I: All Bodies Thursday, June 13, 2019 8:30 a.m. Small Bodies, Outer Planet Satellites, and Other Maps 1:30 p.m. Teaching Planetary Mapping 2:30 p.m. Poster Session II: All Bodies 3:30 p.m. Plenary: Community Discussion Friday, June 14, 2019 8:30 a.m. GIS Session: ArcGIS Roundtable 1:30 p.m. Discussion: Performing Geologic Map Reviews Program Wednesday, June 12, 2019 INTRODUCTION AND MERCURY, VENUS, AND LUNAR MAPS 8:30 a.m. Building 6 Library Chairs: David Williams and James Skinner Times Authors (*Denotes Presenter) Abstract Title and Summary 8:30 a.m. -
Context of Unusual Red Organic-Rich Areas on Ceres and Geologic Constraints for Their Origin
Lunar and Planetary Science XLVIII (2017) 1296.pdf CONTEXT OF UNUSUAL RED ORGANIC-RICH AREAS ON CERES AND GEOLOGIC CONSTRAINTS FOR THEIR ORIGIN. C. M. Pieters1, A. Nathues2, G. Thangiam2, H. Hoffman2, C. De Sanctis3, E. Ammannito3,4, H. Hiesinger5, J. H. Pasckert5, D. P. O’Brien6, J. C. Castillo-Rogez7, O. Ruesch8, L. A. McFadden8, F. Tosi3, F. Zam- bon3, C. A. Raymond7, C. T. Russell4, 1Brown Univ., DEEPS, Providence, RI 02912 ([email protected]), 2Max Planck Institute for Solar System Research, Goettingen, Germany, 3Istituto di Astrofisica e Planetologia Spazi- ali, Istituto Nazionale di Astrofisica (INAF), Rome, Italy, 4University of California, Los Angeles, CA, USA, 5West- fälische Wilhelms-Universität Münster, Germany, 6Planetary Science Institute, Tucson, AZ, USA, 7Jet Propulsion Laboratory, California Inst. of Technology, Pasadena, CA, USA, 8Goddard Space Flight Center, Greenbelt, MD, USA. Introduction: Ceres is the largest and most massive crater floor is slightly terraced and contains several asteroid in the solar system and is rightfully termed a large slumps of wall material, but most of the floor is dwarf planet exhibiting a complex evolution. The Dawn relatively smooth. Either optical property, the presence team has spent over a year evaluating the character of of 3.4 µm absorption or the notable red visible contin- its dark surface [1] and has documented the pervasive uum, can be used to map the spatial extent of these un- presence of Mg-serpentine, ammoniated clays, and usual ROR materials and compared to background opaques [2, 3] with notable unusual deposits of bright Ceres materials (Fig. 2). Since the FC instrument ac- carbonates within Occator crater [4]. -
Organic Material on Ceres: Insights from Visible and Infrared Space Observations
life Article Organic Material on Ceres: Insights from Visible and Infrared Space Observations Andrea Raponi 1,* , Maria Cristina De Sanctis 1, Filippo Giacomo Carrozzo 1 , Mauro Ciarniello 1 , Batiste Rousseau 1 , Marco Ferrari 1 , Eleonora Ammannito 2, Simone De Angelis 1, Vassilissa Vinogradoff 3, Julie C. Castillo-Rogez 4, Federico Tosi 1, Alessandro Frigeri 1 , Michelangelo Formisano 1 , Francesca Zambon 1, Carol A. Raymond 4 and Christopher T. Russell 5 1 Istituto Nazionale di Astrofisica–Istituto di Astrofisica e Planetologia Spaziali, 00133 Rome, Italy; [email protected] (M.C.D.S.); fi[email protected] (F.G.C.); [email protected] (M.C.); [email protected] (B.R.); [email protected] (M.F.); [email protected] (S.D.A.); [email protected] (F.T.); [email protected] (A.F.); [email protected] (M.F.); [email protected] (F.Z.) 2 Agenzia Spaziale Italiana, 00133 Rome, Italy; [email protected] 3 Physique des Interactions Ioniques et Moléculaires, PIIM, Université d’Aix-Marseille, 13013 Marseille, France; [email protected] 4 Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA; [email protected] (J.C.C.-R.); [email protected] (C.A.R.) 5 Earth Planetary and Space Sciences, University of California, Los Angeles, CA 90095, USA; [email protected] * Correspondence: [email protected] Abstract: The NASA/Dawn mission has acquired unprecedented measurements of the surface of the dwarf planet Ceres, the composition of which is a mixture of ultra-carbonaceous material, phyllosilicates, carbonates, organics, Fe-oxides, and volatiles as determined by remote sensing instruments including the VIR imaging spectrometer. -
Special Crater Types on Vesta and Ceres As Revealed by Dawn Katrin Krohn
Chapter Special Crater Types on Vesta and Ceres as Revealed by Dawn Katrin Krohn Abstract The exploration of two small planetary bodies by the Dawn mission revealed multifaced surfaces showing a diverse geology and surface features. Impact crater are the most distinctive features on these planetary bodies. The surfaces of asteroid Vesta and the dwarf planet Ceres reveal craters with an individual appearance as caused by different formation processes. Special topographic and subsurface conditions on both bodies have led to the development of special crater types. This chapter present the three most characteristic crater forms fund on both bodies. Asymmetric craters are found on both bodies, whereas ring-mold craters and floor-fractured craters are only visible on Ceres. Keywords: asteroids, asymmetric craters, ring mold craters, floor-fractured craters, impact into ice 1. Introduction The Dawn Mission was the first mission exploring two different planetary objects in the asteroid belt between Mars and Jupiter, the asteroid Vesta and the dwarf planet Ceres. Asteroid Vesta is the second most massive asteroid (2.59079 x 1020 kg) with a mean diameter of 525 km and a mean density of 3.456 ± 0.035 g/ cm (e.g., [1, 2]). Vesta is believed to be a dry, differentiated proto-planet with an iron core of about 220 km in diameter, a mantle with diogenite compositions and an igneous crust [1, 3, 4]. Asteroid Vesta is a fully differentiated planetary body with a complex topography [2] and a multifaceted morphology including impact basins, various forms of impact craters, large troughs extending around the equato- rial region, enigmatic dark material, mass wasting features and surface alteration processes [2, 5, 6].