Physics – Optics
Scientific paper
Nov 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002asthe..95..515a&link_type=abstract
The Astronomical Herald (ISSN 0374-2466), Vol. 95, No. 11, p. 515 - 528 (2002)
Physics
Optics
Meteors, Leonids, Organic Matter
Scientific paper
Cometary meteoroids are considered as one of the best candidates to have supplied organic compounds to the Earth in the early stage of its history. However, there had been no observational evidence to support this hypothesis until recently. Thus we conducted spectroscopic observations of the 2001 Leonid meteor shower by using intensified HDTV cameras equipped with a reflective grating optics which covers 300-800 nm wavelength range. In order to minimize the effect of air extinction near 300 nm, the observations were performed at a high elevation, i.e., the Subaru Telescope site of 4,100 m above the sea level. Spectral features of hydroxyl radicals in the cometary meteoroids were clearly observed. In this paper, we present the meteor emission and spectroscopic observations of the Leonids and discuss on the origin of the discovered OH A-X (0,0) band.
Abe Shinsuke
Ebizuka Noboru
Kasuga Toshihiro
Sugimoto Masatoshi
Watanabe Jun'ichi
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