18 results on '"Haberle, C."'
Search Results
2. Properties of Rubble-Pile Asteroid (101955) Bennu from OSIRIS-REx Imaging and Thermal Analysis
- Author
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DellaGiustina, D. N, Emery, J. P, Golish, D. R, Rozitis, B, Bennett, C. A, Burke, K. N, Ballouz, R.-L, Becker, K. J, Christensen, P. R, Drouet d’Aubigny, C. Y, Hamilton, V. E, Reuter, D. C, Rizk, B, Simon, A. A, Asphaug, E, Bandfield, J. L, Barnouin, O. S, Barucci, M. A, Binzel, R. P, Bottke, W. F, Bowles, N. E, Campins, H, Clark, B. C, Clark, B. E, Connolly, H. C., Jr, Daly, M. G, de Leon, J, Delbo, M, Deshapriya, J. D. P, Fornasier, S, Hergenrother, C. W, Jawin, E. R, Howell, E. S, Kaplan, H. H, Kareta, T. R, Corre, L. Le, Li, J.-Y, Licandro, J, Lim, L. F, Michel, P, Molaro, J, Nolan, M. C, Popescu, M, Rizos Garcia, J. L, Ryan, A, Schwartz, S. R, Shultz, N, Siegler, M. A, Smith, P. H, Tatsumi, E, Thomas, C. A, Walsh, K. J, Wolner, C. W. V, Zou, X.-D, Lauretta, D. S, Highsmith, D. E, Small, J, Vokrouhlick, D, Brown, E, Hanna, K. L. Donaldson, Warren, T, Brunet, C, Chicoine, R. A, 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, D. L, Bayron, J, Golubov, O, Sánchez, P, Stromberg, J, Hirabayashi, M, Hartzell, C. M, Oliver, S, Rascon, M, Harch, A, Joseph, J, Squyres, S, Richardson, D, McGraw, L, Ghent, R, Al Asad, M. M, Johnson, C. L, Philpott, L, Susorney, H. C. M, Cloutis, E. A, Hanna, R. D, Ciceri, F, Hildebrand, A. R, Ibrahim, E.-M, Breitenfeld, L, Glotch, T, Rogers, A. D, Ferrone, S, Fernandez, Y, Chang, W, Cheuvront, A, Trang, D, Tachibana, S, Yurimoto, H, Brucato, J. R, Poggiali, G, Pajola, M, Dotto, E, Mazzotta Epifani, E, Crombie, M. K, Lantz, C, Izawa, M. R. M, Leon, J. de, Clemett, S, Thomas-Keprta, K, Van wal, S, Yoshikawa, M, Bellerose, J, Bhaskaran, S, Boyles, C, Chesley, S. R, Elder, C. M, 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, J. M, Lessac-Chenen, E, Levine, A, McAdams, J, McCarthy, L, Nelson, D, Page, B, Pelgrift, B, 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, Bierhaus, E. B, 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, M. E, 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, Muhl, 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, T. L, Bendall, S, Bloomenthal, H, Blum, D, Boynton, W. V, Brodbeck, J, Chojnacki, M, Colpo, A, Contreras, J, Cutts, J, Dean, D, Diallo, B, Drinnon, D, Drozd, K, Enos, H. L, Enos, R, Fellows, C, Ferro, T, Fisher, M. R, 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, S. S, Koelbel, L, Kreiner, J, Lambert, D, Lewin, C, Lovelace, B, Loveridge, M, Lujan, M, Maleszewski, C. K, 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, H. L, Salazar, S, Selznick, S, Stewart, S, Sutton, S, Swindle, T, Tang, Y. H, 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, Pino Munoz, D, Watanabe, S.-I, Sandford, S. A, 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, J. P, Cook, J. Elsila, 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, E. M, 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, L. P, 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, R. W, Le Corre, L, Molaro, J. L, Palmer, E. E, Tricarico, P, Weirich, J. R, Ireland, T, Tait, K, Bland, P, Anwar, S, Bojorquez-Murphy, N, Haberle, C. W, Mehall, G, Rios, K, Franchi, I, Beddingfield, C. B, Marshall, J, Brack, D. N, French, A. S, McMahon, J. W, Scheeres, D. J, McCoy, T. J, Russell, S, Killgore, M, Chodas, M, Lambert, M, Masterson, R. A, Freemantle, J, Seabrook, J. A, Craft, K, Daly, R. T, Ernst, C, Espiritu, R. C, Holdridge, M, Jones, M, Nair, A. H, Nguyen, L, Peachey, J, Perry, M. E, Plescia, J, Roberts, J. H, Steele, R, Turner, R, Backer, J, Edmundson, K, Mapel, J, Milazzo, M, Sides, S, Manzoni, C, May, B, Libourel, G, Thuillet, F, and Marty, B
- Subjects
Lunar And Planetary Science And Exploration - Abstract
Establishing the abundance and physical properties of regolith and boulders on asteroids is crucial for understanding the formation and degradation mechanisms at work on their surfaces. Using images and thermal data from NASA's Origins, Spectral Interpretation, Resource Identification, and Security-Regolith Explorer (OSIRIS-REx) spacecraft, we show that asteroid (101955) Bennu's surface is globally rough, dense with boulders, and low in albedo. The number of boulders is surprising given Bennu's moderate thermal inertia, suggesting that simple models linking thermal inertia to particle size do not adequately capture the complexity relating these properties. At the same time, we find evidence for a wide range of particle sizes with distinct albedo characteristics. Our findings imply that ages of Bennu's surface particles span from the disruption of the asteroid's parent body (boulders) to recent in situ production (micrometre-scale particles).
- Published
- 2019
- Full Text
- View/download PDF
3. Quantifying Sub‐Meter Surface Heterogeneity on Mars Using Off‐Axis Thermal Emission Imaging System (THEMIS) Data
- Author
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McKeeby, B. E., primary, Ramsey, M. S., additional, Tai Udovicic, C. J., additional, Haberle, C., additional, and Edwards, C. S., additional
- Published
- 2022
- Full Text
- View/download PDF
4. Diverse Eruptions at Approximately 2,200 Years B.P. on the Great Rift, Idaho: Inferences for Magma Dynamics Along Volcanic Rift Zones
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Hughes, S. S, Nawotniak, S. E. Kobs, Borg, C, Mallonee, H. C, Purcell, S, Neish, C, Garry, W. B, Haberle, C. W, Lim, D. S. S, and Heldmann, J. L
- Subjects
Geophysics - Abstract
Compositionally and morphologically diverse lava flows erupted on the Great Rift of Idaho approximately 2.2 ka (kilo-annum, 1000 years ago) during a volcanic "flare-up" of activity following an approximately 2 ky (kiloyear, 1000 years) hiatus in eruptions. Volcanism at Craters of the Moon (COTM), Wapi and Kings Bowl lava fields around this time included primitive and evolved compositions, separated over 75 kilometers along the approximately 85 kilometers-long rift, with striking variability in lava flow emplacement mechanisms and surface morphologies. Although the temporal associations may be coincidental, the system provides a planetary analog to better understand magma dynamics along rift systems, including that associated with lunar floor-fractured craters. This study aims to help bridge the knowledge gap between ancient rift volcanism evident on the Moon and other terrestrial planets, and active rift volcanism, e.g., at Hawai'i and Iceland.
- Published
- 2016
5. Evidence for limited compositional and particle size variation on asteroid (101955) Bennu from thermal infrared spectroscopy
- Author
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Hamilton, V. E., primary, Christensen, P. R., additional, Kaplan, H. H., additional, Haberle, C. W., additional, Rogers, A. D., additional, Glotch, T. D., additional, Breitenfeld, L. B., additional, Goodrich, C. A., additional, Schrader, D. L., additional, McCoy, T. J., additional, Lantz, C., additional, Hanna, R. D., additional, Simon, A. A., additional, Brucato, J. R., additional, Clark, B. E., additional, and Lauretta, D. S., additional
- Published
- 2021
- Full Text
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6. Asteroid (101955) Bennu’s weak boulders and thermally anomalous equator
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Pino Muñoz, Daniel, Rozitis, B., Ryan, A., Emery, J., Christensen, P., Hamilton, V., Simon, A., Reuter, D., Al Asad, M., Ballouz, R.-L., Bandfield, J., Barnouin, O., Bennett, C., Bernacki, M., Burke, K., Cambioni, S., Clark, B., Daly, M., Delbo, M., DellaGiustina, D., Elder, C., Hanna, R., Haberle, C., Howell, E., Golish, D., Jawin, E., Kaplan, H., Lim, L., Molaro, J., Munoz, D. Pino, Nolan, M., Rizk, B., Siegler, M., Susorney, H., Walsh, K., Lauretta, D., MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL), Centre de Mise en Forme des Matériaux (CEMEF), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)
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010504 meteorology & atmospheric sciences ,Mass movement ,[SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO] ,Astronomy ,media_common.quotation_subject ,Population ,Equator ,Inertia ,01 natural sciences ,Astrobiology ,0103 physical sciences ,education ,010303 astronomy & astrophysics ,Research Articles ,ComputingMilieux_MISCELLANEOUS ,0105 earth and related environmental sciences ,media_common ,education.field_of_study ,Multidisciplinary ,SciAdv r-articles ,[CHIM.MATE]Chemical Sciences/Material chemistry ,Albedo ,[INFO.INFO-MO]Computer Science [cs]/Modeling and Simulation ,Meteorite ,Atmospheric entry ,Asteroid ,[SDU]Sciences of the Universe [physics] ,Physics::Space Physics ,[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] ,Astrophysics::Earth and Planetary Astrophysics ,Planetary Science ,Geology ,Research Article - Abstract
Heterogeneous thermal properties of Bennu are due primarily to spatial mixing of two boulder types with differing strengths., Thermal inertia and surface roughness are proxies for the physical characteristics of planetary surfaces. Global maps of these two properties distinguish the boulder population on near-Earth asteroid (NEA) (101955) Bennu into two types that differ in strength, and both have lower thermal inertia than expected for boulders and meteorites. Neither has strongly temperature-dependent thermal properties. The weaker boulder type probably would not survive atmospheric entry and thus may not be represented in the meteorite collection. The maps also show a high–thermal inertia band at Bennu’s equator, which might be explained by processes such as compaction or strength sorting during mass movement, but these explanations are not wholly consistent with other data. Our findings imply that other C-complex NEAs likely have boulders similar to those on Bennu rather than finer-particulate regoliths. A tentative correlation between albedo and thermal inertia of C-complex NEAs may be due to relative abundances of boulder types.
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- 2020
- Full Text
- View/download PDF
7. Asteroid (101955) Bennu’s weak boulders and thermally anomalous equator
- Author
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Rozitis, B., primary, Ryan, A. J., additional, Emery, J. P., additional, Christensen, P. R., additional, Hamilton, V. E., additional, Simon, A. A., additional, Reuter, D. C., additional, Al Asad, M., additional, Ballouz, R.-L., additional, Bandfield, J. L., additional, Barnouin, O. S., additional, Bennett, C. A., additional, Bernacki, M., additional, Burke, K. N., additional, Cambioni, S., additional, Clark, B. E., additional, Daly, M. G., additional, Delbo, M., additional, DellaGiustina, D. N., additional, Elder, C. M., additional, Hanna, R. D., additional, Haberle, C. W., additional, Howell, E. S., additional, Golish, D. R., additional, Jawin, E. R., additional, Kaplan, H. H., additional, Lim, L. F., additional, Molaro, J. L., additional, Munoz, D. Pino, additional, Nolan, M. C., additional, Rizk, B., additional, Siegler, M. A., additional, Susorney, H. C. M., additional, Walsh, K. J., additional, and Lauretta, D. S., additional
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- 2020
- Full Text
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8. Thermal Fatigue as a Driving Mechanism for Activity on Asteroid Bennu
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Molaro, J. L., primary, Hergenrother, C. W., additional, Chesley, S. R., additional, Walsh, K. J., additional, Hanna, R. D., additional, Haberle, C. W., additional, Schwartz, S. R., additional, Ballouz, R.‐L., additional, Bottke, W. F., additional, Campins, H. J., additional, and Lauretta, D. S., additional
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- 2020
- Full Text
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9. Special considerations for treating dental patients exhibiting the "post-polio syndrome".
- Author
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Haberle, C. Brent, Stewart, Arthur Van, Staat, Robert H., Gettleman, Lawrence, Sleamaker, Thomas F., Haberle, C B, Van Stewart, A, Staat, R H, Gettleman, L, and Sleamaker, T F
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- 2001
- Full Text
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10. THERMALLY DRIVEN EXFOLIATION AND PARTICLE EJECTION ON BENNU.
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Molaro, J. L., Jawin, E. R., Ballouz, R.-L., Walsh, K. J., Hanna, R. D., Haberle, C. W., Pajola, M., Ryan, A. J., Schwartz, S. R., Campins, H., Clark, B. E., and Lauretta, D. S.
- Subjects
THERMOCYCLING ,SPACE sciences ,FRACTURE mechanics - Published
- 2021
11. WHAT IS THE HYDRATED PHASE ON BENNU'S SURFACE?
- Author
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Hanna, R. D., Hamilton, V. E., Haberle, C. W., Kaplan, H. H., Howell, E. S., Takir, D., Zolensky, M. E., and Lauretta, D. S.
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SPACE environment ,EARTH sciences ,IR spectrometers ,SPACE exploration - Published
- 2021
12. OVERVIEW OF OSIRIS-REX THERMAL OBSERVATIONS.
- Author
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Emery, J. P., Rozitis, B., Christensen, P. R., Hamilton, V. E., Haberle, C., Simon, A. A., Reuter, D. C., Delbó, M., Lim, L. F., Clark, B. E., Ryan, A., Chesley, S. R., Boynton, W. V., Polit, A., Westerman, M., Becker, T., Garcia, R., Lambert, D., Kidd, J., and Howell, E. S.
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EXTRATERRESTRIAL life ,IR spectrometers ,SPACE flight - Published
- 2021
13. BASALT 2016: MARS ANALOG RESEARCH IN LAVA TERRAINS OF IDAHO AND HAWAI'I.
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Nawotniak, S. E. K., Lim, D. S. S., Hughes, S. S., Sehlke, A., Brady, A., Cockell, C., Payler, S., Stevens, A., Haberle, C., Elphic, R., Garry, W. B., Gibbons, E., Borg, C., and Sandmeyer, E.
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LAVA ,MARTIAN exploration - Published
- 2017
14. THE MINERALOGIC VARIABILITY OF ICELANDIC PALAGONITES: AN ANALOG STUDY FOR MARS.
- Author
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Ackiss, S., Horgan, B., Gudnason, J., Haberle, C., Thorsteinsson, T., and Thordarson, T.
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PALAGONITE ,MINERAL analysis - Published
- 2017
15. REVISITING THE ALKALINE VOLCANIC ROCKS OF GUSEV CRATER WITH MINI-TES.
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Haberle, C. W., Ruff, S. W., and Christensen, P. R.
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VOLCANIC ash, tuff, etc. ,ALKALINE earth compounds - Published
- 2017
16. Asteroid (101955) Bennu’s weak boulders and thermally anomalous equator
- Author
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Rozitis, B., Ryan, A. J., Emery, J. P., Christensen, P. R., Hamilton, V. E., Simon, A. A., Reuter, D. C., Al Asad, M., Ballouz, R.-L., Bandfield, J. L., Barnouin, O. S., Bennett, C. A., Bernacki, M., Burke, K. N., Cambioni, S., Clark, B. E., Daly, M. G., Delbo, M., DellaGiustina, D. N., Elder, C. M., Hanna, R. D., Haberle, C. W., Howell, E. S., Golish, D. R., Jawin, E. R., Kaplan, H. H., Lim, L. F., Molaro, J. L., Munoz, D. Pino, Nolan, M. C., Rizk, B., Siegler, M. A., Susorney, H. C. M., Walsh, K. J., Lauretta, D. S., Rozitis, B., Ryan, A. J., Emery, J. P., Christensen, P. R., Hamilton, V. E., Simon, A. A., Reuter, D. C., Al Asad, M., Ballouz, R.-L., Bandfield, J. L., Barnouin, O. S., Bennett, C. A., Bernacki, M., Burke, K. N., Cambioni, S., Clark, B. E., Daly, M. G., Delbo, M., DellaGiustina, D. N., Elder, C. M., Hanna, R. D., Haberle, C. W., Howell, E. S., Golish, D. R., Jawin, E. R., Kaplan, H. H., Lim, L. F., Molaro, J. L., Munoz, D. Pino, Nolan, M. C., Rizk, B., Siegler, M. A., Susorney, H. C. M., Walsh, K. J., and Lauretta, D. S.
- Abstract
Thermal inertia and surface roughness are proxies for the physical characteristics of planetary surfaces. Global maps of these two properties distinguish the boulder population on near-Earth asteroid (NEA) (101955) Bennu into two types that differ in strength, and both have lower thermal inertia than expected for boulders and meteorites. Neither has strongly temperature-dependent thermal properties. The weaker boulder type probably would not survive atmospheric entry and thus may not be represented in the meteorite collection. The maps also show a high–thermal inertia band at Bennu’s equator, which might be explained by processes such as compaction or strength sorting during mass movement, but these explanations are not wholly consistent with other data. Our findings imply that other C-complex NEAs likely have boulders similar to those on Bennu rather than finer-particulate regoliths. A tentative correlation between albedo and thermal inertia of C-complex NEAs may be due to relative abundances of boulder types.
17. Evidence for widespread hydrated minerals on asteroid (101955) Bennu
- Author
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Hamilton, V. E., Simon, A. A., Christensen, P. R., Reuter, D. C., Clark, B. E., Barucci, M. A., Bowles, N. E., Boynton, W. V., Brucato, J. R., Cloutis, E. A., Connolly, H. C., Donaldson Hanna, K. L., Emery, J. P., Enos, H. L., Fornasier, S., Haberle, C. W., Hanna, R. D., Howell, E. S., Kaplan, H. H., Keller, L. P., Lantz, C., Li, J.-Y., Lim, L. F., McCoy, T. J., Merlin, F., Nolan, M. C., Praet, A., Rozitis, Benjamin, Sandford, S. A., Schrader, D. L., Thomas, C. A., Zou, X.-D., Lauretta, D. S., Hamilton, V. E., Simon, A. A., Christensen, P. R., Reuter, D. C., Clark, B. E., Barucci, M. A., Bowles, N. E., Boynton, W. V., Brucato, J. R., Cloutis, E. A., Connolly, H. C., Donaldson Hanna, K. L., Emery, J. P., Enos, H. L., Fornasier, S., Haberle, C. W., Hanna, R. D., Howell, E. S., Kaplan, H. H., Keller, L. P., Lantz, C., Li, J.-Y., Lim, L. F., McCoy, T. J., Merlin, F., Nolan, M. C., Praet, A., Rozitis, Benjamin, Sandford, S. A., Schrader, D. L., Thomas, C. A., Zou, X.-D., and Lauretta, D. S.
- 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-type 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 metres 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.
18. Asteroid (101955) Bennu’s weak boulders and thermally anomalous equator
- Author
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Rozitis, B., Ryan, A. J., Emery, J. P., Christensen, P. R., Hamilton, V. E., Simon, A. A., Reuter, D. C., Al Asad, M., Ballouz, R.-L., Bandfield, J. L., Barnouin, O. S., Bennett, C. A., Bernacki, M., Burke, K. N., Cambioni, S., Clark, B. E., Daly, M. G., Delbo, M., DellaGiustina, D. N., Elder, C. M., Hanna, R. D., Haberle, C. W., Howell, E. S., Golish, D. R., Jawin, E. R., Kaplan, H. H., Lim, L. F., Molaro, J. L., Munoz, D. Pino, Nolan, M. C., Rizk, B., Siegler, M. A., Susorney, H. C. M., Walsh, K. J., Lauretta, D. S., Rozitis, B., Ryan, A. J., Emery, J. P., Christensen, P. R., Hamilton, V. E., Simon, A. A., Reuter, D. C., Al Asad, M., Ballouz, R.-L., Bandfield, J. L., Barnouin, O. S., Bennett, C. A., Bernacki, M., Burke, K. N., Cambioni, S., Clark, B. E., Daly, M. G., Delbo, M., DellaGiustina, D. N., Elder, C. M., Hanna, R. D., Haberle, C. W., Howell, E. S., Golish, D. R., Jawin, E. R., Kaplan, H. H., Lim, L. F., Molaro, J. L., Munoz, D. Pino, Nolan, M. C., Rizk, B., Siegler, M. A., Susorney, H. C. M., Walsh, K. J., and Lauretta, D. S.
- Abstract
Thermal inertia and surface roughness are proxies for the physical characteristics of planetary surfaces. Global maps of these two properties distinguish the boulder population on near-Earth asteroid (NEA) (101955) Bennu into two types that differ in strength, and both have lower thermal inertia than expected for boulders and meteorites. Neither has strongly temperature-dependent thermal properties. The weaker boulder type probably would not survive atmospheric entry and thus may not be represented in the meteorite collection. The maps also show a high–thermal inertia band at Bennu’s equator, which might be explained by processes such as compaction or strength sorting during mass movement, but these explanations are not wholly consistent with other data. Our findings imply that other C-complex NEAs likely have boulders similar to those on Bennu rather than finer-particulate regoliths. A tentative correlation between albedo and thermal inertia of C-complex NEAs may be due to relative abundances of boulder types.
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