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Your search keyword '"Glavin D. P."' showing total 10 results
Start Over Author "Glavin D. P." Journal science
10 results on '"Glavin D. P."'

1. Episodes of Particle Ejection from the Surface of the Active Asteroid (101955) Bennu

Author

Lauretta, D. S, Hergenrother, C. W, Chesley, S. R, Leonard, J. M, Pelgrift, J. Y, Adam, C. D, Asad, M. Al, Antreasian, P. G, Ballouz, R.-L, Becker, K. J, Bennett, C. A, Bos, B. J, Bottke, W. F, Brozovi, M, Campins, H, Jr, H. C. Connolly, Daly, M. G, Davis, A. B, León, J. de, DellaGiustina, D. N, d’Aubigny, C. Y. Drouet, Dworkin, J. P, Emery, J. P, Farnocchia, D, Glavin, D. P, Golish, D. R, Hartzell, C. M, Jacobson, R. A, Jawin, E. R, Jenniskens, P, Jr, J. N. Kidd, Lessac-Chenen, E. J, Li, J.-Y, Libourel, G, Licandro, J, Liounis, A. J, Maleszewski, C. K, Manzoni, C, May, B, McCarthy, L. K, McMahon, J. W, Michel, P, Molaro, J. L, Moreau, M. C, Nelson, D. S, Jr, W. M. Owen, Rizk, B, Roper, H. L, Rozitis, B, Sahr, E. M, Scheeres, D. J, Seabrook, J. A, Selznick, S. H, Takahashi, Y, Thuillet, F, Tricarico, P, Vokrouhlick, D, and Wolner, C. W. V

Subjects
Lunar And Planetary Science And Exploration
Abstract

Active asteroids are those that show evidence of ongoing mass loss. We report repeated instances of particle ejection from the surface of (101955) Bennu, demonstrating that it is an active asteroid. The ejection events were imaged by the OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security–Regolith Explorer) spacecraft. For the three largest observed events, we estimated the ejected particle velocities and sizes, event times, source regions, and energies. We also determined the trajectories and photometric properties of several gravitationally bound particles that orbited temporarily in the Bennu environment. We consider multiple hypotheses for the mechanisms that lead to particle ejection for the largest events, including rotational disruption, electrostatic lofting, ice sublimation, phyllosilicate dehydration, meteoroid impacts, thermal stress fracturing, and secondary impacts.

Published
2019
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2. The imprint of atmospheric evolution in the D/H of Hesperian clay minerals on Mars

Author

the MSL Science Team, Mahaffy, P. R., Webster, C. R., Stern, J. C., Brunner, A. E., Atreya, S. K., Conrad, P. G., Domagal-Goldman, S., Eigenbrode, J. L., Flesch, G. J., Christensen, L. E., Franz, H. B., Freissinet, C., Glavin, D. P., Grotzinger, J. P., Jones, J. H., Leshin, L. A., Malespin, C., McAdam, A. C., Ming, D. W., Navarro-Gonzalez, R., Niles, P. B., Owen, T., Pavlov, A. A., Steele, A., Trainer, M. G., Williford, K. H., and Wray, J. J.

Published
2015

3. Volatile and Organic Compositions of Sedimentary Rocks in Yellowknife Bay, Gale Crater, Mars

Author

MSL Science Team, Ming, D. W., Archer, P. D., Glavin, D. P., Eigenbrode, J. L., Franz, H. B., Sutter, B., Brunner, A. E., Stern, J. C., Freissinet, C., McAdam, A. C., Mahaffy, P. R., Cabane, M., Coll, P., Campbell, J. L., Atreya, S. K., Niles, P. B., Bell, J. F., Bish, D. L., Brinckerhoff, W. B., Buch, A., Conrad, P. G., Des Marais, D. J., Ehlmann, B. L., Fairén, A. G., Farley, K., Flesch, G. J., Francois, P., Gellert, R., Grant, J. A., Grotzinger, J. P., Gupta, S., Herkenhoff, K. E., Hurowitz, J. A., Leshin, L. A., Lewis, K. W., McLennan, S. M., Miller, K. E., Moersch, J., Morris, R. V., Navarro-González, R., Pavlov, A. A., Perrett, G. M., Pradler, I., Squyres, S. W., Summons, R. E., Steele, A., Stolper, E. M., Sumner, D. Y., Szopa, C., Teinturier, S., Trainer, M. G., Treiman, A. H., Vaniman, D. T., Vasavada, A. R., Webster, C. R., Wray, J. J., and Yingst, R. A.

Published
2014

4. Volatile, Isotope, and Organic Analysis of Martian Fines with the Mars Curiosity Rover

Author

Leshin, L. A., Mahaffy, P. R., Webster, C. R., Cabane, M., Coll, P., Conrad, P. G., Archer, P. D., Atreya, S. K., Brunner, A. E., Buch, A., Eigenbrode, J. L., Flesch, G. J., Franz, H. B., Freissinet, C., Glavin, D. P., McAdam, A. C., Miller, K. E., Ming, D. W., Morris, R. V., Navarro-González, R., Niles, P. B., Owen, T., Pepin, R. O., Squyres, S., Steele, A., Stern, J. C., Summons, R. E., Sumner, D. Y., Sutter, B., Szopa, C., Teinturier, S., Trainer, M. G., Wray, J. J., and Grotzinger, J. P.

Published
2013
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5. MARS ATMOSPHERE: The imprint of atmospheric evolution in the D/H of Hesperian clay minerals on Mars

Author

Mahaffy, P. R., Webster, C. R., Stern, J. C., Brunner, A. E., Atreya, S. K., Conrad, P. G., Domagal-Goldman, S., Eigenbrode, J. L., Flesch, G. J., Christensen, L. E., Franz, H. B., Freissinet, C., Glavin, D. P., Grotzinger, J. P., Jones, J. H., Leshin, L. A., Malespin, C., McAdam, A. C., Ming, D. W., Navarro-Gonzalez, R., Niles, P. B., Owen, T., Pavlov, A. A., Steele, A., Trainer, M. G., Williford, K. H., and Wray, J. J.

Published
2015
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6. The Imprint of Atmospheric Evolution in the D/H of Hesperian Clay Minerals on Mars

Author

Mahaffy, P. R, Webster, C. R, Stern, J. C, Brunner, A. E, Atreya, S. K, Conrad, P. G, Domagal-Goldman, S, Eigenbrode, J. L, Flesch, G. J, Christensen, L. E, Franz, H. B, Glavin, D. P, Jones, J. H, McAdam, A. C, Pavlov, A. A, Trainer, M. G, and Williford, K. H

Subjects
Lunar And Planetary Science And Exploration
Abstract

The deuterium-to-hydrogen (D/H) ratio in strongly bound water or hydroxyl groups in ancient Martian clays retains the imprint of the water of formation of these minerals. Curiosity's Sample Analysis at Mars (SAM) experiment measured thermally evolved water and hydrogen gas released between 550 degrees Centigrade and 950 degrees Centigrade from samples of Hesperian-era Gale crater smectite to determine this isotope ratio. The D/H value is 3.0 (plus or minus 0.2) times the ratio in standard mean ocean water. The D/H ratio in this approximately 3-billion-year-old mudstone, which is half that of the present Martian atmosphere but substantially higher than that expected in very early Mars, indicates an extended history of hydrogen escape and desiccation of the planet.

Published
2014
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7. Volatile and Organic Compositions of Sedimentary Rocks in Yellowknife Bay, Gale Crater, Mars

Author

Ming, D. W., Archer, P. D., Jr., Glavin, D. P., Eigenbrode, J. L., Franz, H. B., Sutter, B., Brunner, A. E., Stern, J. C., Freissinet, C., McAdam, A. C., Mahaffy, P. R., Cabane, M., Coll, P., Campbell, J. L., Atreya, S. K., Niles, P. B., Bell, J. F., III, Bish, D. L., Brinckerhoff, W. B., Buch, A., Conrad, P. G., Des Marais, D. J., Ehlmann, B. L., Fairén, A. G., Farley, K., Flesch, G. J., Francois, P., Gellert, R., Grant, J. A., Grotzinger, J. P., Gupta, S., Herkenhoff, K. E., Hurowitz, J. A., Leshin, L. A., Lewis, K. W., McLennan, S. M., Miller, K. E., Moersch, J., Morris, R. V., Navarro-González, R., Pavlov, A. A., Perrett, G. M., Pradler, I., Squyres, S. W., Summons, R. E., Steele, A., Stolper, E. M., Sumner, D. Y., Szopa, C., Teinturier, S., Trainer, M. G., Treiman, A. H., Vaniman, D. T., Vasavada, A. R., Webster, C. R., Wray, J. J., and Yingst, R. A.

Published
2014

8. Bright carbonate veins on asteroid (101955) Bennu: Implications for aqueous alteration history

Author

Kaplan, H. H., primary, Lauretta, D. S., additional, Simon, A. A., additional, Hamilton, V. E., additional, DellaGiustina, D. N., additional, Golish, D. R., additional, Reuter, D. C., additional, Bennett, C. A., additional, Burke, K. N., additional, Campins, H., additional, Connolly, H. C., additional, Dworkin, J. P., additional, Emery, J. P., additional, Glavin, D. P., additional, Glotch, T. D., additional, Hanna, R., additional, Ishimaru, K., additional, Jawin, E. R., additional, McCoy, T. J., additional, Porter, N., additional, Sandford, S. A., additional, Ferrone, S., additional, Clark, B. E., additional, Li, J.-Y., additional, Zou, X.-D., additional, Daly, M. G., additional, Barnouin, O. S., additional, Seabrook, J. A., additional, and Enos, H. L., additional

Published
2020
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9. A search for endogenous amino acids in martian meteorite ALH84001

Author

Bada, J. L, Glavin, D. P, McDonald, G. D, and Becker, L

Subjects
Lunar And Planetary Science And Exploration
Abstract

Trace amounts of glycine, serine, and alanine were detected in the carbonate component of the martian meteorite ALH84001 by high-performance liquid chromatography. The detected amino acids were not uniformly distributed in the carbonate component and ranged in concentration from 0.1 to 7 parts per million. Although the detected alanine consists primarily of the L enantiomer, low concentrations (<0.1 parts per million) of endogenous D-alanine may be present in the ALH84001 carbonates. The amino acids present in this sample of ALH84001 appear to be terrestrial in origin and similar to those in Allan Hills ice, although the possibility cannot be ruled out that minute amounts of some amino acids such as D-alanine are preserved in the meteorite.

Published
1998
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10. The imprint of atmospheric evolution in the D/H of Hesperian clay minerals on Mars.

Author

Mahaffy, P. R., Webster, C. R., Stern, J. C., Brunner, A. E., Atreya, S. K., Conrad, P. G., Domagal-Goldman, S., Eigenbrode, J. L., Flesch, G. J., Christensen, L. E., Franz, H. B., Freissinet, C., Glavin, D. P., Grotzinger, J. P., Jones, J. H., Leshin, L. A., Malespin, C., McAdam, A. C., Ming, D. W., and Navarro-Gonzalez, R.

Subjects
*ATMOSPHERIC evolution, *CLAY soil testing, *DEUTERIUM, *HYDROGEN analysis, *MARTIAN atmosphere, *WATER on Mars, *GALE Crater (Mars)
Abstract

The deuterium-to-hydrogen (D/H) ratio in strongly bound water or hydroxyl groups in ancient martian clays retains the imprint of the water of formation of these minerals. Curiosity's Sample Analysis at Mars (SAM) experiment measured thermally evolved water and hydrogen gas released between 550° and 950°C from samples of Hesperian-era Gale crater smectite to determine this isotope ratio. The D/H value is 3.0 (®0.2) times the ratio in standard mean ocean water. The D/H ratio in this ~3-billion-year-old mudstone, which is half that of the present martian atmosphere but substantially higher than that expected in very early Mars, indicates an extended history of hydrogen escape and desiccation of the planet. [ABSTRACT FROM AUTHOR]

Published
2015
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