Spectrophotometry of Comet Bradfield /1980t/ during post-perihelion period

Details Spectrophotometry of Comet Bradfield /1980t/ during post-perihelion period Spectrophotometry of Comet Bradfield /1980t/ during post-perihelion period

Feb 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982m%26p....26....3g&link_type=abstract

Moon and the Planets, vol. 26, Feb. 1982, p. 3-9.

Astronomy and Astrophysics

Astronomy

14

Astronomical Photometry, Comet Heads, Spectrophotometry, Carbon, Cn Emission, Perihelions, Spectral Energy Distribution, Swan Bands

Scientific paper

Spectrum scans of the head of Comet Bradfield (1980t) covering the wavelength range 365-640 nm were made on two nights when the heliocentric distance of the comet varied from 0.55 to 0.58 AU. The emission features of the CN band at 388 nm and Swan band sequence of C2 at 474 nm, 516 nm, and 563 nm are identified and absolute fluxes in these bands as well as in the continuum are derived. The continuum energy distribution curves of the comet have been compared with those of the sun and the star Beta Crv (G5 III). An estimate of the number of C2 and CN molecules in the head of the comet has been made through the measured intensities of their respective bands lying in this region.

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