Spectroscopic Analysis of Geminid Meteors

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F10%3A00373962" target="_blank" >RIV/67985815:_____/10:00373962 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Spectroscopic Analysis of Geminid Meteors
Original language description
I have analyzed 89 spectra of Geminid meteors obtained with image intensified video cameras in 1997-2004. Details of observation techniques and spectra analysis are given. Intensities of lines of Mg, Na, and Fe have been studied. Both Fe and Na lines were found to be fainter relatively to Mg than expected for chondritic composition. Moreover, the Na line intensity varied strongly from meteor to meteor. Based on the low Fe/Mg ratio, similar to other cometary meteoroids, I argue that 3200 Phaethon, the parent body of Geminids, is of cometary origin. Severe loss of Na occurred due to solar heating at the low perihelion distance of 0.14 AU. Varying meteoroid age seems to be the most plausible explanation of varying Na content from meteoroid to meteoroid, although other explanations, such as meteoroid origin in different depths in Phaethon or internal Phaethon inhomogeneities, are possible as well.
Czech name
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Czech description
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Project
<a href="/en/project/GA205%2F05%2F0543" target="_blank" >GA205/05/0543: Chemical composition of cometary and asteroidal meteoroids</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the International Meteor Conference
ISBN
978-2-87355-021-9
ISSN
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e-ISSN
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Number of pages
10
Pages from-to
42-51
Publisher name
International Meteor Organization
Place of publication
Paris
Event location
Bareges
Event date
Jun 7, 2007
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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