0517163 - ASÚ 2020 RIV FR eng J - Journal Article
Vojáček, Vlastimil - Borovička, Jiří - Koten, Pavel - Spurný, Pavel - Štork, Rostislav
Properties of small meteoroids studied by meteor video observations.
Astronomy & Astrophysics. Roč. 621, January (2019), č. článku A68. ISSN 0004-6361. E-ISSN 1432-0746
R&D Projects: GA ČR(CZ) GA16-00761S
Institutional support: RVO:67985815
Keywords : meteorites * meteors * meteoroids
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 5.636, year: 2019
Method of publishing: Open access

he complex study of millimetre-sized meteoroids can reveal more about the structure and origin of population of these meteoroids. The variety of properties among millimetre-sized meteoroids proved different sources and histories of this material. Meteoroids that contain small grains tend to release their sodium early. For given grain sizes, the sodium in Na-poor meteoroids is released earlier than in meteors without sodium depletion. Overall, meteoroids with sodium depletion are revealed to have different structures: they have stronger material without very small grains and they do not show very bright wakes. Two iron meteoroids on Halley-type orbits were observed, thereby supporting the idea of large-scale mixing of material in the early solar system. The distribution of grain sizes of Jupiter-family members was in good agreement with results from the COSIMA instrument on the ROSETTA probe.
Permanent Link: http://hdl.handle.net/11104/0302450