CCD spectroscopy and modelling of the planetary nebula NGC 7009

Details CCD spectroscopy and modelling of the planetary nebula NGC 7009 CCD spectroscopy and modelling of the planetary nebula NGC 7009

Oct 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.210..655m&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 210, Oct. 1, 1984, p. 655-662.

Astronomy and Astrophysics

Astronomy

2

Astronomical Spectroscopy, Charge Coupled Devices, Infrared Spectra, Paschen Series, Planetary Nebulae, Continuous Spectra, Plasma Temperature, Recombination Reactions, Spectral Energy Distribution, Stellar Spectra

Scientific paper

New CCD spectra of the planetary nebula NGC 7009 are presented, comparing the measured line intensities with those obtained by Cryzak and Aller (1979). The observed spectrum is modelled using the predictions of Case B recombination theory, showing that a good fit to the observed continuum and line strengths can be produced. An independent estimate of the temperature along the minor axis of the bright ring of the nebula is obtained.

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