Zobrazeno 1 - 10
of 211
pro vyhledávání: '"Donald M. Hunten"'
Publikováno v:
Canadian Journal of Physics. 90:725-732
Atmospheric sodium at the Moon was observed for altitudes from the ground up to 1800 km from 18 April to 13 May 1998, a period including an entire lunar month. Because of bad weather, coverage was incomplete but we present the analysis of 36 spectra
Autor:
Donald M. Hunten
Publikováno v:
Icarus. 194:616-622
Ethane and other C2 and C3 nonmethane hydrocarbons were observed by the Galileo Probe Mass Spectrometer to have a deep minimum in mixing ratio near and below the tropopause, rising to much larger values at and below the 15 bar level. This minimum req
Autor:
S. Verani, François Leblanc, Rosario Cosentino, Ann L. Sprague, Gabriele Cremonese, Michael Mendillo, Donald M. Hunten, Cesare Barbieri
Publikováno v:
Icarus
Icarus, 2006, 185 (2), pp.395-402. ⟨10.1016/j.icarus.2006.08.006⟩
Icarus, Elsevier, 2006, 185 (2), pp.395-402. ⟨10.1016/j.icarus.2006.08.006⟩
Icarus, 2006, 185 (2), pp.395-402. ⟨10.1016/j.icarus.2006.08.006⟩
Icarus, Elsevier, 2006, 185 (2), pp.395-402. ⟨10.1016/j.icarus.2006.08.006⟩
Following the observations of August 2002 [Barbieri, C., Verani, S., Cremonese, G., Sprague, A., Mendillo, M., Cosentino, R., Hunten, D., 2004. Planet. Space Sci. 52, 1169–1175], the high resolution spectrograph of the 3.5-m Galileo National Telesc
Autor:
John C. Pearl, Lyn R. Doose, Ann L. Sprague, M. D. Smith, Donald M. Hunten, R. E. Hill, William V. Boynton
Publikováno v:
Icarus. 184:372-400
Our ground-based measurements of martian atmospheric water vapor, made throughout L s = 34 ° to 249°, 24 September 1998 to 23 November 1999, during Mars year 24 (MY 24), show changes in Mars' humidity on hourly, daily, and seasonal timescales. We m
Autor:
Randy L. Korotev, David J. Lawrence, R. C. Elphic, Donald M. Hunten, Bill Feldman, Bruce A. Campbell, James J. Papike, Robert C. Reedy, Sylvestre Maurice, Sarah K. Noble, Thomas H. Prettyman, Lon L. Hood, Olivier Gasnault, Lawrence A. Taylor, Paul G. Lucey, Michael Mendillo, Jeffrey J. Gillis, S. L. Lawson
Publikováno v:
Reviews in Mineralogy and Geochemistry. 60:83-219
The surface of the Moon is a critical boundary that shapes our understanding of the Moon as a whole. All geologic mapping and remote sensing techniques utilize only the outermost portion of the Moon. Before leaving the Moon for study in our laborator
Autor:
K. Kerry, Ann L. Sprague, William V. Boynton, K. J. Kim, Robert C. Reedy, Albert E. Metzger, Daniel M. Janes, Donald M. Hunten
Publikováno v:
Science. 306:1364-1367
The gamma ray spectrometer on the Mars Odyssey spacecraft measured an enhancement of atmospheric argon over southern high latitudes during autumn followed by dissipation during winter and spring. Argon does not freeze at temperatures normal for south
Autor:
Cesare Barbieri, Donald M. Hunten, Michael Mendillo, Gabriele Cremonese, S. Verani, Ann L. Sprague, Rosario Cosentino
Publikováno v:
Planetary and Space Science. 52:1169-1175
Analysis of three spectra of the exosphere of Mercury in the Na-D lines are presented. Spectra were secured with the highresolution spectrograph (SARG) of the 3.5 M Telescopio Nazionale Galileo (TNG, located on the Roque de los Muchachos, Canaries) o
Autor:
Donald M. Hunten
Publikováno v:
Planetary and Space Science. 51:887-890
After a brief autobiographical summary, a description is given of observations of sunlit aurora and the corresponding twilight and dayglow effects, starting with the classic work of Stormer, which showed the phenomenon to extend as high as 1100 km .