The Spectrum of Hartwig's Comet

Details The Spectrum of Hartwig's Comet The Spectrum of Hartwig's Comet

Oct 1880

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1880natur..22..557c&link_type=abstract

Nature, Volume 22, Issue 572, pp. 557 (1880).

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Scientific paper

THE spectrum of this comet was examined here on the evening of October 7 with a spectroscope having a single prism of 45°, and was found to consist of three bright bands and a continuous spectrum corresponding to the nucleus. The middle and brightest band was compared with the band at W.L. 5198 in the spectrum of a vacuum tube containing alcohol vapour, and three micrometer measures gave the position of the less refrangible edge of the comet band at W.L. 5184, 5215, and 5204 tenth metres respectively. The breadth, of the band was about 40 tenth metres. These measures would indicate that the principal comet-band is coincident with tie band at W.L. 5198 of the vacuum-tube spectrum of carbon-compounds, and not with that of the Bunsen-flame at W.L. 5165. The observations however were made under unfavourable circumstances, the comet being low, and involved in haze and cloud. The positions of the other two bands were not determined.

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