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Icarus, ISSN 0019-1035, 04/2016, Volume 268, pp. 32 - 36
•Dissociation of molecules may be producing hot Ca in Mercury’s exosphere.•The excess energy may be imparted by shock induced dissociative ionization.•Electron... 
Terrestrial planets | Mercury, atmosphere | Mercury
Journal Article
Journal Article
Icarus, ISSN 0019-1035, 04/2016, Volume 268, pp. 32 - 36
We investigate the possible pathways to produce the extreme energy observed in the calcium exosphere of Mercury. Any mechanism must explain the facts that Ca... 
Terrestrial planets | Mercury, atmosphere | Mercury | ENERGY | IMPACT VAPORIZATION | ATMOSPHERES | PLASMA | CLUSTERS | ASTRONOMY & ASTROPHYSICS | SURFACE | CALCIUM EXOSPHERE | MESSENGER OBSERVATIONS | SPACE ENVIRONMENT | IONIZATION | Shock | Lime | Sulfides | Planets | Photolysis | Ionization | Mercury (Planet) | Atmosphere | Environmental aspects | Exosphere | Calcium | Clusters | Abundance | Activation | Photodissociation | Mercury (planet) | Vaporization
Journal Article
Science, ISSN 0036-8075, 7/2008, Volume 321, Issue 5885, pp. 90 - 92
The region around Mercury is filled with ions that originate from interactions of the solar wind with Mercury's space environment and through ionization of its... 
Exosphere | Space based observatories | Ionization | Report | Spacecraft | Ions | Plasmas | Mercury | Solar wind | Magnetospheres | Mercury surface | SPECTROMETER | SOLAR-WIND | MODEL | MAGNETOSPHERE | MULTIDISCIPLINARY SCIENCES | Space vehicles | Space ships | Observations | Mercury (Planet) | Astrophysics | Space exploration | Atmospheric chemistry | Magnetic fields
Journal Article
Icarus, ISSN 0019-1035, 04/2015, Volume 250, pp. 230 - 237
Mercury's calcium exosphere varies in a periodic way with that planet's true anomaly. We show that this pattern can be explained by impact vaporization from... 
Impact processes | Mercury, atmosphere | Interplanetary dust | ASTRONOMY & ASTROPHYSICS | INNER SOLAR-SYSTEM | FLUX | INTER-PLANETARY DUST | ATMOSPHERE | Environmental aspects | Orbits | Mercury (Planet) | Analysis | Earth | Planes | Calcium | Disks | Mercury (planet) | Mercury surface | Anomalies
Journal Article
Icarus, ISSN 0019-1035, 04/2015, Volume 250, pp. 230 - 237
•We show that Mercury’s calcium exosphere, which is observed to vary seasonally about that planet’s orbit, can be attributed toimpact vaporization by... 
Impact processes | Mercury, atmosphere | Interplanetary dust
Journal Article
Journal Article
The Astrophysical Journal, ISSN 2041-8213, 05/2019, Volume 876, Issue 1, p. L16
ApJL 876 L16 (2019) While the Earth and Moon are generally similar in composition, a notable difference between the two is the apparent depletion in moderately... 
Journal Article
Journal of Geophysical Research: Space Physics, ISSN 0148-0227, 03/2012, Volume 117, Issue A3, p. n/a
The only species that have been so far detected in the lunar exosphere are Na, K, Ar, and He. However, models for the production and loss of species derived... 
atmosphere | moon | PHOTON-STIMULATED DESORPTION | MAGNESIUM | ZODIACAL LIGHT | SODIUM | MOON | ASTRONOMY & ASTROPHYSICS | SURFACE | MERCURYS EXOSPHERE | ULTRAVIOLET SPECTROMETER | MODEL | ATMOSPHERE | Magnetism | Planets | Atmospheric sciences | Planetology | Moon | Atmosphere
Journal Article
Icarus, ISSN 0019-1035, 06/2017, Volume 289, pp. 227 - 238
•We report observational evidence of Al and Fe in Mercury's exosphere based on measurements with the Keck I HIRES instrument in 2008, 2009 and 2013.•We report... 
Exospheres | Mercury | SPECTROMETER | SODIUM | TELESCOPE | FLYBY | ASTRONOMY & ASTROPHYSICS | CALCIUM EXOSPHERE | ATMOSPHERE | DISCOVERY | Environmental aspects | Mercury (Planet) | Astronomy | Measuring instruments | Analysis
Journal Article
Icarus, ISSN 0019-1035, 08/2019, Volume 328, pp. 152 - 159
In order to observe the lunar sodium exosphere out to one-half degree around the Moon, we designed, built and installed a small robotically controlled... 
Moon | Atmospheres, composition | Atmospheres, structure | Analysis | Astronomy
Journal Article
Advances in Space Research, ISSN 0273-1177, 10/2018, Volume 62, Issue 8, pp. 2364 - 2371
•We show the immediate fractional escape for species of mass <50AMU at primary bodies <10,000km in radius.•We compare escape fractions of volatiles escaping... 
Escape | Exospheres | Volatiles | SOUTH-POLE | SODIUM | ENERGY | MESSENGER | COLLISIONS | CERES | DESORPTION | GEOSCIENCES, MULTIDISCIPLINARY | WATER-VAPOR | ASTRONOMY & ASTROPHYSICS | MERCURYS EXOSPHERE | METEOROLOGY & ATMOSPHERIC SCIENCES | Asteroids | Analysis | Radiation
Journal Article
Science, ISSN 0036-8075, 8/2010, Volume 329, Issue 5992, pp. 672 - 675
During MESSENGER'S third flyby of Mercury, the Mercury Atmospheric and Surface Composition Spectrometer detected emission from ionized calcium concentrated 1... 
Exosphere | Planet detection | REPORTS | Spacecraft | Atoms | Mercury | Planetary surfaces | Convection | Polar regions | Magnetic polarity | Altitude | ACCELERATION | SODIUM | MISSION | MULTIDISCIPLINARY SCIENCES | CALCIUM | SURFACE | SOLAR-WIND INTERACTION | MAGNETOSPHERE | EMISSION | ATMOSPHERE | DISCOVERY | Environmental aspects | Usage | Mercury (Planet) | Space probes | Astrophysics | Space exploration | Atmosphere | Planets | Sodium | Calcium | Magnesium
Journal Article
Journal of Geophysical Research: Space Physics, ISSN 0148-0227, 12/2012, Volume 117, Issue A12, p. n/a
Analysis of MESSENGER magnetic field observations taken in the southern lobe of Mercury's magnetotail and the adjacent magnetosheath on 11 April 2011 indicates... 
flux transfer events | Mercury | reconnection | 1ST FLYBY | MOTION | MAGNETOSHEATH | ASTRONOMY & ASTROPHYSICS | SOLAR-WIND | MAGNETOPAUSE | RECONNECTION | MAGNETIC-FIELD | MODEL | MAGNETOSPHERE | CLUSTER
Journal Article
Journal of Geophysical Research: Planets, ISSN 0148-0227, 12/2012, Volume 117, Issue E12, p. n/a
The Mercury Atmospheric and Surface Composition Spectrometer (MASCS) on the MESSENGER spacecraft has made the first high‐spatial‐resolution observations of... 
atmospheres | MESSENGER | Mercury | exospheres | GEOCHEMISTRY & GEOPHYSICS | MAGNESIUM | SODIUM | DESORPTION | TRANSIT | FLYBY | MARINER-10 | SURFACE | POTASSIUM | ATMOSPHERE | DISCOVERY | Planets | Planetology | Atmosphere | Remote sensing
Journal Article