Spectrophotometric observations of NGC 6543

Details Spectrophotometric observations of NGC 6543 Spectrophotometric observations of NGC 6543

Oct 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974apjs...28..335b&link_type=abstract

Astrophysical Journal Supplement Series (Supplement no. 264), vol. 28, Oct. 1974, p. 335-342.

Astronomy and Astrophysics

Astrophysics

16

Astronomical Spectroscopy, Interstellar Extinction, Planetary Nebulae, Spectrophotometry, Balmer Series, Electron Energy, Line Spectra, Radiant Flux Density, Telescopes

Scientific paper

Spectrophotometric observations at the coude focus of the 200-inch (5-m) Hale telescope were made to investigate the point-to-point intensity changes in the planetary nebula NGC 6543. The observations covered the blue and visible regions of the line spectra; some aspects of the visible regions have been examined by Boeshaar. The observed Balmer decrement seems to fit well with the prediction of Brocklehurst's theory. No indication of a large amount of interstellar extinction has been observed and for an electron temperature of 9000 K the extinction might very well be negligible. Significant density fluctuations (and presumably temperature fluctuations) are indicated.

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