Other
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.250b.245h&link_type=abstract
In ESA Proceedings of the 20th ESLAB Symposium on the Exploration of Halley's Comet. Volume 2: Dust and Nucleus p 245-248 (SEE N
Other
Halley'S Comet, Orionid Meteoroids, Spectrum Analysis, Abundance, Astronomical Photography, Meteorites, Meteoritic Composition
Scientific paper
The spectra of 17 bright Orionid meteors from comet Halley, photographed between 1985 and 1986, are examined and compared with the spectra of other fast meteors. The spectral region from 3100 to 8700 Å is covered, with a wide range of instrumental dispersion. The brightest members of the group have peak absolute magnitudes between -7 and -9, indicating masses of a few tens of grams.There is thus clear evidence that large particles from comet Halley survive to encounter the Earth. Although the Orionid spectra are not as detailed as the best spectra of Perseid meteors (from P/Swift-Tuttle, 1862 III) lines of six neutral atomic species and five singly-ionized species are observed. Any differences in abundances of these elements between the two showers (and parent comets) appear to be marginal.
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