Ceres’ Surface Composition

doi:10.1017/9781108856324.010

7 - Ceres’ Surface Composition

from Part II - Key Results from Dawn’s Exploration of Vesta and Ceres

Published online by Cambridge University Press: 01 April 2022

Maria Cristina De Sanctis and

Andrea Raponi

Edited by

Simone Marchi ,

Carol A. Raymond and

Christopher T. Russell

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Simone Marchi: Affiliation:
Southwest Research Institute, Boulder, Colorado
Carol A. Raymond: Affiliation:
California Institute of Technology
Christopher T. Russell: Affiliation:
University of California, Los Angeles

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Summary

Ceres’ composition has been a long-standing issue since the first ground-based observations because of its peculiar spectrum and lack of an established connection with meteorites. NASA’s Dawn mission acquired unprecedented measurements of the surface of the dwarf planet Ceres, bringing a breakthrough in the comprehension of the mineralogy of the surface. Ceres’ surface is a mixture of ultra-carbonaceous material, Mg-phyllosilicates, NH4-phyllosilicates, carbonates, organics, Fe-oxides, and volatiles, as determined by remote sensing instruments onboard Dawn: Visible and InfraRed imaging spectrometer (VIR), Gamma Ray and Neutron Detector (GRAND), and the Framing Camera (FC). The average mineralogy of Ceres reveals a possible past global aqueous alteration. Regional variations of such materials unveil possible processing acting on large scales, both endogenous and exogenous. Local areas of Ceres surface, on a spatial scale of a few kilometers, present significant spectral variations with respect to the measured average spectrum, and thus significant variation on the inferred mineralogy. Most imply recent or ongoing geological activity involving upwelling of subsurface carbonate-rich and salt-rich brines (Occator crater and Ahuna Mons), organic material (Ernutet crater), hydrated carbonates, and water ice (Oxo and Juling craters). Global aqueous alteration and recent hydrothermal activity place Ceres among the most interesting targets in astrobiology.

Keywords

Ceres Small bodies Dwarf planet Astrobiology Organic material

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Type: Chapter
Information: Vesta and Ceres
Insights from the Dawn Mission for the Origin of the Solar System
, pp. 105 - 120

DOI: https://doi.org/10.1017/9781108856324.010 [Opens in a new window]

Publisher: Cambridge University Press

Print publication year: 2022

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References

Ammannito, E., De Sanctis, M. C., Ciarniello, M., et al. (2016) Distribution of phyllosilicates on the surface of Ceres. Science, 353, aaf4279.Google Scholar

Beran, A. (2002) Infrared spectroscopy of micas. Reviews in Mineralogy and Geochemistry, 46, 351–369.Google Scholar

Berg, B. L., Cloutis, E. A., Beck, P., et al. (2016) Reflectance spectroscopy (0.35–8 μm) of ammonium-bearing minerals and qualitative comparison to Ceres-like asteroids. Icarus, 265, 218–237.Google Scholar

Binzel, R. P., & Xu, S. (1993) Chips off of Asteroid 4 Vesta: Evidence for the parent body of basaltic achondrite meteorites. Science, 260, 186–191.Google Scholar

Bishop, J. L., Banin, A., Mancinelli, R. L., & Klovstad, M. R. (2002) Detection of soluble and fixed NH₄⁺ in clay minerals by DTA and IR reflectance spectroscopy: A potential tool for planetary surface exploration. Planetary and Space Science, 50, 11.Google Scholar

Bishop, J. L., Lane, M. D., Dyar, M. D., & Brown, A. J. (2008) Reflectance and emission spectroscopy study of four groups of phyllosilicates: Smectites, kaolinite-serpentines, chlorites and micas. Clay Minerals, 43, 35–54.Google Scholar

Bowling, T. J., Ciesla, F. J., Davison, T. M., et al. (2019) Post-impact thermal structure and cooling timescales of Occator crater on asteroid 1 Ceres. Icarus, 320, 110–118.Google Scholar

Bowling, T. J., Johnson, B. C., Marchi, S., et al. (2020) An endogenic origin of cerean organics. Earth and Planetary Science Letters, 534, 116069.Google Scholar

Brown, M. E., & Rhoden, A. R. (2014) The 3 μm spectrum of Jupiter’s irregular satellite Himalia. The Astrophysical Journal, 793, L44.Google Scholar

Buczkowski, D. L., Schmidt, B. E., Williams, D. A., et al. (2016) The geomorphology of Ceres. Science, 353, aaf4332.Google Scholar

Bus, S. J., & Binzel, R. P. (2002a) Phase II of the small main-belt asteroid spectroscopic survey. The observations. Icarus, 158, 106.CrossRef Google Scholar

Bus, S. J., & Binzel, R. P. (2002b) Phase II of the small main-belt asteroid spectroscopic survey. A feature-based taxonomy. Icarus, 158, 146.Google Scholar

Campins, H., Hargrove, K., Pinilla-Alonso, N., et al. (2010) Water ice and organics on the surface of the asteroid 24 Themis. Nature, 464, 1320–1321.CrossRef Google Scholar PubMed

Carrozzo, F. G., De Sanctis, M. C., Raponi, A., et al. (2018) Nature, formation, and distribution of carbonates on Ceres. Science Advances, 4, e1701645.Google Scholar

Carrozzo, F. G., Raponi, A., De Sanctis, M. C., et al. (2016) Artifacts reduction in VIR/Dawn data. Review of Scientific Instruments, 87, 124501.Google Scholar

Castillo-Rogez, J. C., Neveu, M., McSween, H. Y., et al. (2018). Insights into Ceres’s evolution from surface composition. Meteoritics & Planetary Science, 53, 1820.Google Scholar

Castillo-Rogez, J. C., Neveu, M., Scully, J. E. C., et al. (2020) Ceres: Astrobiological target and possible ocean world. Astrobiology, 20, 269–291.Google Scholar

Chapman, C. R., & Gaffey, M. J. (1979) Reflectance spectra for 277 asteroids. In Gehrels, T., & Matthews, M. S. (eds.), Asteroids. Tucson: University of Arizona Press, pp. 655–687.Google Scholar

Chapman, C. R., McCord, T. B., & Johnson, T. V. (1973) Asteroid spectral reflectivities. The Astronomical Journal, 78, 126–140.Google Scholar

Chapman, C. R., & Salisbury, J. W. (1973) Comparisons of meteorite and asteroid spectral reflectivities. Icarus, 19, 507–522.Google Scholar

Ciarniello, M., De Sanctis, M. C., Ammannito, E., et al. (2017). Spectrophotometric properties of dwarf planet Ceres from the VIR spectrometer on board the Dawn mission. Astronomy and Astrophysics, 598, A130.Google Scholar

Clark, B. E., Hapke, B., Pieters, C., & Britt, D. (2002) Asteroid space weathering and regolith evolution. In Bottke, W. F. Jr., Cellino, A., Paolicchi, P., & Binzel, R. P. (eds.), Asteroids III. Tucson: University of Arizona Press, pp. 585–599.Google Scholar

Combe, J.-P., McCord, T. B., Tosi, F., et al. (2016) Detection of local H₂O exposed at the surface of Ceres. Science, 353, aaf3010.Google Scholar

Combe, J.-P., Raponi, A., Tosi, F., et al. (2019) Exposed H₂O-rich areas detected on Ceres with the dawn visible and infrared mapping spectrometer. Icarus, 318, 22–41.Google Scholar

Cruikshank, D. P., Tholen, D. J., Hartmann, W. K., Bell, J. F., & Brown, R. H. (1991) Three basaltic earth-approaching asteroids and the source of the basaltic meteorites. Icarus, 89, 1–13.Google Scholar

De Angelis, S., Ferrari, M., De Sanctis, M. C., et al. (2021) High-temperature VIS-IR spectroscopy of NH4-phyllosilicates. Journal of Geophysical Research: Planets, 126, e2020JE006696Google Scholar

De Sanctis, M. C., Ammannito, E., Carrozzo, F. G., et al. (2018) Ceres’s global and localized mineralogical composition determined by Dawn’s Visible and Infrared Spectrometer (VIR). Meteoritics & Planetary Science, 53, 1844.Google Scholar

De Sanctis, M. C., Ammannito, E., McSween, H. Y., et al. (2017) Localized aliphatic organic material on the surface of Ceres. Science, 355, 719–722.Google Scholar

De Sanctis, M. C., Ammannito, E., Raponi, A., et al. (2015) Ammoniated phyllosilicates with a likely outer Solar System origin on (1) Ceres. Nature, 528, 241–244.Google Scholar

De Sanctis, M. C., Ammannito, E., Raponi, A., et al. (2020) Fresh emplacement of hydrated sodium chloride on Ceres from ascending salty fluids. Nature Astronomy, 4, 786–793.Google Scholar

De Sanctis, M. C., Coradini, A., Ammannito, E., et al. (2011) The VIR spectrometer. Space Science Reviews, 163, 329–369.Google Scholar

De Sanctis, M. C., Raponi, A., Ammannito, E., et al. (2016) Bright carbonate deposits as evidence of aqueous alteration on (1) Ceres. Nature, 536, 54–57.Google Scholar

De Sanctis, M. C., Vinogradoff, V., Raponi, A., et al. (2019) Characteristics of organic matter on Ceres from VIR/Dawn high spatial resolution spectra. Monthly Notices of the Royal Astronomical Society, 482, 2407–2421.Google Scholar

dos Santos, R., Patel, M., Cuadros, J., & Martins, Z. (2016) Influence of mineralogy on the preservation of amino acids under simulated Mars conditions. Icarus, 277, 342.Google Scholar

Ehlmann, B. L., Hodyss, R., Bristow, T. F., et al. (2018) Ambient and cold-temperature infrared spectra and XRD patterns of ammoniated phyllosilicates and carbonaceous chondrite meteorites relevant to Ceres and other Solar System bodies. Meteoritics & Planetary Science, 53, 1884.CrossRef Google Scholar

Farinella, P., Gonczi, R., Froeschle, C., & Froeschle, C. (1993) The injection of asteroid fragments into resonances. Icarus, 101, 174–187.Google Scholar

Farmer, V. C. (1974) The layer silicates. In Farmer, V. C. (ed.), The Infrared Spectra of Minerals, Monograph 4. London: Mineralogical Society, pp. 331–363.Google Scholar

Ferrari, M., De Angelis, S., De Sanctis, M. C., et al. (2019) Reflectance spectroscopy of ammonium-bearing phyllosilicates. Presented at EPSC-DPS Joint Meeting 2019, September 15–20, Geneva, id. EPSC-DPS2019–1864.Google Scholar

Formisano, M., Federico, C., De Sanctis, M. C., et al. (2018) Thermal stability of water ice in Ceres’ craters: The case of Juling crater. Journal of Geophysical Research (Planets), 123, 2445–2463.Google Scholar

Frigeri, A., De Sanctis, M. C., Ammannito, E., et al. (2019) The spectral parameter maps of Ceres from NASA/DAWN VIR data. Icarus, 318, 14–21.CrossRef Google Scholar

Gaffey, M. J. (1976) Spectral reflectance characteristics of the meteorite classes. Journal of Geophysical Research, 81, 905–920.CrossRef Google Scholar

Greenberg, J. M., Li, A., Mendoza-Gomez, C. X., et al. (1995) Approaching the interstellar grain organic refractory component. The Astrophysical Journal, 455, L177.Google Scholar

Hapke, B. (1993) Theory of Reflectance and Emittance Spectroscopy. New York: Cambridge University Press.Google Scholar

Hapke, B. (2012) Theory of Reflectance and Emittance Spectroscopy, 2nd ed. New York: Cambridge University Press.Google Scholar

Hendrix, A. R., Vilas, F., & Li, J.-Y. (2016) Ceres: Sulfur deposits and graphitized carbon. Geophysical Research Letters, 43, 8920.Google Scholar

Holm, N. G., Oze, C., Mousis, O., Waite, J. H., & Guilbert-Lepoutre, A. (2015) Serpentinization and the formation of H₂ and CH₄ on celestial bodies (planets, moons, comets). Astrobiology, 15, 587.Google Scholar

Hoyle, F., Wickramasinghe, N. C., Al-Mufti, S., Olavesen, A. H., & Wickramasinghe, D. T. (1982) Infrared spectroscopy over the 2.9–3.9 μm waveband in biochemistry and astronomy. Astrophysics and Space Science, 83, 405–409.Google Scholar

Kaplan, H. H., Milliken, R. E., & Alexander, C. M. O’D. (2018) New constraints on the abundance and composition of organic matter on Ceres. Geophysical Research Letters, 45, 5274–5282.Google Scholar

King, T. V. V., & Clark, R. N. (1989) Spectral characteristics of chlorites and Mg-serpentines using high-resolution reflectance spectroscopy. Journal of Geophysical Research, 94, 13997–14008.Google Scholar

King, T. V. V., Clark, R. N., Calvin, W. M., Sherman, D. M., & Brown, R. H. (1992) Evidence for ammonium-bearing minerals on Ceres. Science, 255, 1551–1553.Google Scholar

Krohn, M. D. (1987) Near-infrared detection of ammonium minerals. Geophysics, 52, 924.Google Scholar

Landis, M. E., Byrne, S., Combe, J.-P., et al. (2019) Water vapor contribution to Ceres’ exosphere from observed surface ice and postulated ice-exposing impacts. Journal of Geophysical Research: Planets, 124, 61–75.Google Scholar

Larson, H. P., Feierberg, M. A., Fink, U., & Smith, H. A. (1979) Remote spectroscopic identification of carbonaceous chondrite mineralogies: Applications to Ceres and Pallas. Icarus, 39, 257–271.Google Scholar

Lazzaro, D., Ferraz-Mello, S., & Fernández, J. A. (eds.) (2006) Asteroids, Comets, Meteors, IAU Symposium. New York: Cambridge University Press.Google Scholar

Le Guillou, C., Bernard, S., Brearley, A. J., & Remusat, L. (2014) Evolution of organic matter in Orgueil, Murchison and Renazzo during parent body aqueous alteration: In situ investigations. Geochimica et Cosmochimica Acta, 131, 368.Google Scholar

Lebofsky, L. A., Feierberg, M. A., Tokunaga, A. T., Larson, H. P., & Johnson, J. R. (1981) The 1.7- to 4.2-μm spectrum of asteroid 1 Ceres: Evidence for structural water in clay minerals. Icarus, 48, 453–459.Google Scholar

Li, J.-Y., McFadden, L. A., Parker, J. W., et al. (2006) Photometric analysis of 1 Ceres and surface mapping from HST observations. Icarus, 182, 143–160.Google Scholar

Li, J.-Y., Reddy, V., Nathues, A., et al. (2016) Surface albedo and spectral variability of Ceres. The Astrophysical Journal, 817, L22.Google Scholar

Li, J.-Y., Schröder, S. E., Mottola, S., et al. (2019) Spectrophotometric modeling and mapping of Ceres. Icarus, 322, 144–167.Google Scholar

Licandro, J., Campins, H., Kelley, M., et al. (2011) (65) Cybele: Detection of small silicate grains, water-ice, and organics. Astronomy and Astrophysics, 525, A34.Google Scholar

Longobardo, A., Palomba, E., Carrozzo, F. G., et al. (2019a) Mineralogy of the Occator quadrangle. Icarus, 318, 205–211.Google Scholar

Longobardo, A., Palomba, E., Galiano, A., et al. (2019b) Photometry of Ceres and Occator faculae as inferred from VIR/Dawn data. Icarus, 320, 97–109.CrossRef Google Scholar

Marchi, S., Raponi, A., Prettyman, T. H., et al. (2019) An aqueously altered carbon-rich Ceres. Nature Astronomy, 3, 140–145.Google Scholar

McCollom, T. M., & Seewald, J. S. (2007) Abiotic synthesis of organic compounds in deep-sea hydrothermal environments. Chemical Reviews, 107, 382–401.Google Scholar

McCord, T. B., & Castillo-Rogez, J. C. (2018) Ceres’s internal evolution: The view after Dawn. Meteoritics & Planetary Science, 53, 1778–1792.Google Scholar

McCord, T. B., & Zambon, F. (2019) The surface composition of Ceres from the Dawn mission. Icarus, 318, 2.Google Scholar

Mennella, V., Baratta, G. A., Esposito, A., Ferini, G., & Pendleton, Y. J. (2003) The effects of ion irradiation on the evolution of the carrier of the 3.4 micron interstellar absorption band. The Astrophysical Journal, 587, 727.Google Scholar

Milliken, R. E., & Rivkin, A. S. (2009) Brucite and carbonate assemblages from altered olivine-rich materials on Ceres. Nature Geoscience, 2, 258–261.Google Scholar

Moroz, L. V., Arnold, G., Korochantsev, A. V., & Wäsch, R. (1998) Natural solid bitumens as possible analogs for cometary and asteroid organics: 1. Reflectance spectroscopy of pure bitumens. Icarus, 134, 253–268.Google Scholar

Nathues, A., Platz, T., Thangjam, G., et al. (2017). Evolution of Occator crater on (1) Ceres. The Astronomical Journal, 153, 112.Google Scholar

Nathues, A., Platz, T., Thangjam, G., et al. (2019) Occator crater in color at highest spatial resolution. Icarus, 320, 24–38.Google Scholar

Neesemann, A., van Gasselt, S., Schmedemann, N., et al. (2019) The various ages of Occator crater, Ceres: Results of a comprehensive synthesis approach. Icarus, 320, 60–82.Google Scholar

Orthous-Daunay, F.-R., Quirico, E., Beck, P., et al. (2013) Mid-infrared study of the molecular structure variability of insoluble organic matter from primitive chondrites. Icarus, 223, 534–543.Google Scholar

Palomba, E., Longobardo, A., De Sanctis, M. C., et al. (2019) Compositional differences among bright spots on the Ceres surface. Icarus, 320, 202–212.Google Scholar

Parker, J. W., Stern, S. A., Thomas, P. C., et al. (2002) Analysis of the first disk-resolved images of Ceres from ultraviolet observations with the Hubble Space Telescope. The Astronomical Journal, 123, 549.Google Scholar

Pearson, V. K., Sephton, M. A., Kearsley, A. T., et al. (2002) Clay mineral-organic matter relationships in the early Solar System. Meteoritics & Planetary Science, 37, 1829–1833.Google Scholar

Pendleton, Y. J., & Allamandola, L. J. (2002) The organic refractory material in the diffuse interstellar medium: Mid-infrared spectroscopic constraints. The Astrophysical Journal Supplement Series, 138, 75–98.CrossRef Google Scholar

Pieters, C. M., Nathues, A., Thangjam, G., et al. (2018) Geologic constraints on the origin of red organic-rich material on Ceres. Meteoritics & Planetary Science, 53, 1983–1998.Google Scholar

Pieters, C. M., & Noble, S. K. (2016) Space weathering on airless bodies. Journal of Geophysical Research (Planets), 121, 1865.Google Scholar

Poch, O., Istiqomah, I., Quirico, E., et al. (2020) Ammonium salts are a reservoir of nitrogen on a cometary nucleus and possibly on some asteroids. Science, 367, aaw7462.Google Scholar

Poch, O., Jaber, M., Stalport, F., et al. (2015) Effect of nontronite smectite clay on the chemical evolution of several organic molecules under simulated martian surface ultraviolet radiation conditions. Astrobiology, 15, 221.Google Scholar

Postberg, F., Kempf, S., Schmidt, J., et al. (2009) Sodium salts in E-ring ice grains from an ocean below the surface of Enceladus. Nature, 459, 1098–1101.Google Scholar

Postberg, F., Schmidt, J., Hillier, J., Kempf, S., & Srama, R. (2011) A salt-water reservoir as the source of a compositionally stratified plume on Enceladus. Nature, 474, 620–622.Google Scholar

Prettyman, T. H., Feldman, W. C., McSween, H. Y., et al. (2011) Dawn’s gamma ray and neutron detector. Space Science Reviews, 163, 371–459.CrossRef Google Scholar

Prettyman, T. H., Yamashita, N., Toplis, M. J., et al. (2017) Extensive water ice within Ceres’ aqueously altered regolith: Evidence from nuclear spectroscopy. Science, 355, 55–59.Google Scholar

Quick, L. C., Buczkowski, D. L., Ruesch, O., et al. (2019) A possible brine reservoir beneath Occator crater: Thermal and compositional evolution and formation of the Cerealia dome and Vinalia Faculae. Icarus, 320, 119–135.Google Scholar

Raponi, A., Carrozzo, F. G., Zambon, F., et al. (2019a) Mineralogical mapping of Coniraya quadrangle of the dwarf planet Ceres. Icarus, 318, 99–110.Google Scholar

Raponi, A., Ciarniello, M., Capaccioni, F., et al. (2020) Infrared detection of aliphatic organics on a cometary nucleus. Nature Astronomy, 4, 500.Google Scholar

Raponi, A., De Sanctis, M. C., Carrozzo, F. G., et al. (2019b) Mineralogy of Occator crater on Ceres and insight into its evolution from the properties of carbonates, phyllosilicates, and chlorides. Icarus, 320, 83–96.Google Scholar

Raponi, A., De Sanctis, M. C., Frigeri, A., et al. (2018) Variations in the amount of water ice on Ceres’ surface suggest a seasonal water cycle. Science Advances, 4, eaao3757.Google Scholar

Raymond, C. A., Ermakov, A. I., Castillo-Rogez, J. C., et al. (2020). Impact-driven mobilization of deep crustal brines on dwarf planet Ceres. Nature Astronomy, 4, 741–747.Google Scholar

Rivkin, A. S., & Emery, J. P. (2010) Detection of ice and organics on an asteroidal surface. Nature, 464, 1322.Google Scholar

Rivkin, A. S., Li, J.-Y., Milliken, R. E., et al. (2011) The surface composition of Ceres. Space Science Reviews, 163, 95–116.Google Scholar

Rivkin, A. S., Volquardsen, E. L., & Clark, B. E. (2006) The surface composition of Ceres: Discovery of carbonates and iron-rich clays. Icarus, 185, 563–567.Google Scholar

Roatsch, T., Kersten, E., Matz, K.-D., et al. (2016) Ceres survey atlas derived from Dawn Framing Camera images. Planetary and Space Science, 121, 115–120.Google Scholar

Roettger, E. E., & Buratti, B. J. (1994) Ultraviolet spectra and geometric albedos of 45 asteroids. Icarus, 112, 496.Google Scholar

Rousseau, B., De Sanctis, M. C., Raponi, A., et al. (2020) Correction of the VIR-visible dataset from the Dawn mission at Vesta. Review of Scientific Instruments, 91, 123102.Google Scholar

Ruesch, O., Platz, T., Schenk, P., et al. (2016) Cryovolcanism on Ceres. Science, 353, aaf4286.Google Scholar

Schröder, S. E., Mottola, S., Carsenty, U., et al. (2017) Resolved spectrophotometric properties of the Ceres surface from Dawn Framing Camera images. Icarus, 288, 201–225.Google Scholar

Schulte, M., & Shock, E. (2004) Coupled organic synthesis and mineral alteration on meteorite parent bodies. Meteoritics & Planetary Science, 39, 1577–1590.Google Scholar

Scully, J. E. C., Schenk, P. M., Castillo-Rogez, J. C., et al. (2020) The varied sources of faculae-forming brines in Ceres’ Occator crater emplaced via hydrothermal brine effusion. Nature Communications, 11, 3680.Google Scholar

Sierks, H., Keller, H. U., Jaumann, R., et al. (2011) The Dawn Framing Camera. Space Science Reviews, 163, 263–327.Google Scholar

Stein, N. T., Ehlmann, B. L., Palomba, E., et al. (2019) The formation and evolution of bright spots on Ceres. Icarus, 320, 188–201.Google Scholar

Takir, D., & Emery, J. P. (2012) Outer Main Belt asteroids: Identification and distribution of four 3-μm spectral groups. Icarus, 219, 641–654.Google Scholar

Takir, D., Emery, J. P., McSween, H. Y., et al. (2013) Nature and degree of aqueous alteration in CM and CI carbonaceous chondrites. Meteoritics & Planetary Science, 48, 1618–1637.Google Scholar

Tosi, F., Carrozzo, F. G., Zambon, F., et al. (2019) Mineralogical analysis of the Ac-H-6 Haulani quadrangle of the dwarf planet Ceres. Icarus, 318, 170–187.Google Scholar

Vernazza, P., Mothé-Diniz, T., Barucci, M. A., et al. (2005) Analysis of near-IR spectra of 1 Ceres and 4 Vesta, targets of the Dawn mission. Astronomy and Astrophysics, 436, 1113–1121.Google Scholar

Vinogradoff, V., Bernard, S., Le Guillou, C., & Remusat, L. (2018) Evolution of interstellar organic compounds under asteroidal hydrothermal conditions. Icarus, 305, 358–370.Google Scholar

Vinogradoff, V., Le Guillou, C., Bernard, S., et al. (2017) Paris vs. Murchison: Impact of hydrothermal alteration on organic matter in CM chondrites. Geochimica et Cosmochimica Acta, 212, 234.Google Scholar

Vu, T. H., Hodyss, R., Johnson, P. V., & Choukroun, M. (2017) Preferential formation of sodium salts from frozen sodium-ammonium-chloride-carbonate brines – Implications for Ceres’ bright spots. Planetary and Space Science, 141, 73–77.Google Scholar

Waite, Jr., J. H., Lewis, W. S., Magee, B. A., et al. (2009) Liquid water on Enceladus from observations of ammonia and ⁴⁰Ar in the plume. Nature, 460, 487–490.Google Scholar

Williams, D. A., Buczkowski, D. L., Mest, S. C., et al. (2018) Introduction: The geologic mapping of Ceres. Icarus, 316, 1–13.CrossRef Google Scholar

Williams, L. B., Canfield, B., Voglesonger, K. M., & Holloway, J. R. (2005) Organic molecules formed in a “primordial womb”. Geology, 33, 913–916.Google Scholar

Zambon, F., Raponi, A., Tosi, F., et al. (2017) Spectral analysis of Ahuna Mons from Dawn mission’s visible-infrared spectrometer. Geophysical Research Letters, 44, 97–104.Google Scholar

Zolotov, M. Y. (2007) An oceanic composition on early and today’s Enceladus. Geophysical Research Letters, 34, L23203.Google Scholar

Zolotov, M. Y., & Shock, E. L. (2001) Composition and stability of salts on the surface of Europa and their oceanic origin. Journal of Geophysical Research, 106, 32815–32827.Google Scholar

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