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The Southern Argentina Agile Meteor Radar Orbital System (SAAMER-OS): An Initial Sporadic Meteoroid Orbital Survey in the Southern Sky
(IOP Publishing, 2015-08)
We present an initial survey in the southern sky of the sporadic meteoroid orbital environment obtained with the Southern Argentina Agile MEteor Radar (SAAMER) Orbital System (OS), in which over three-quarters of a million ...
High-altitude meteors and meteoroid fragmentation observed at the Jicamarca Radio Observatory
(Royal Astronomical Society, 2014-12-08)
Modern high-power, large-aperture (HPLA) radars have been used in a variety of investigations including the investigation of meteoroid fragmentation. The identification of fragmentation has been based on a detailed ...
The collisional evolution of undifferentiated asteroids and the formation of chondritic meteoroids
(IOP Publishing, 2016-06)
Most meteorites are fragments from recent collisions experienced in theasteroid belt. In such a hypervelocity collision, the smaller collisionpartner is destroyed, whereas a crater on the asteroid is formed or itis entirely ...
Infrared Spectroscopy of Carbonaceous-chondrite Inclusions in the Kapoeta Meteorite: Discovery of Nanodiamonds with New Spectral Features and Astrophysical Implications
(IOP Publishing, 2018-03-22)
We report the finding of nanodiamonds, coexisting with amorphous carbon, in carbonaceous-chondrite (CC) material from the Kapoeta achondritic meteorite by Fourier-transform infrared (FTIR) spectroscopy and micro-Raman ...
Size and density sorting of dust grains in SPH simulations of protoplanetary discs
(OXFORD UNIV PRESS, 2017)
The size and density of dust grains determine their response to gas drag in protoplanetary discs. Aerodynamical (size x density) sorting is one of the proposed mechanisms to explain the grain properties and chemical ...
The remarkable solar twin HIP 56948: a prime target in the quest for other Earths
(EDP SCIENCES S ALES ULIS CEDEX A, 2012)
Context. The Sun shows abundance anomalies relative to most solar twins. If the abundance peculiarities are due to the formation of inner rocky planets, that would mean that only a small fraction of solar type stars may ...
Irradiation of nitrogen-rich ices by swift heavy ions: clues for the formation of ultracarbonaceous micrometeorites
(2015)
Context. Extraterrestrial materials, such as meteorites and interplanetary dust particles, provide constraints on the formation and evolution of organic matter in the young solar system. Micrometeorites represent the ...