A photoionization model for the emission of the Crab filaments, and their spread in composition

Details A photoionization model for the emission of the Crab filaments, and their spread in composition A photoionization model for the emission of the Crab filaments, and their spread in composition

Jun 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986pazh...12..440g&link_type=abstract

(Pis'ma v Astronomicheskii Zhurnal, vol. 12, June 1986, p. 440-445) Soviet Astronomy Letters (ISSN 0360-0327), vol. 12, May-June

Astronomy and Astrophysics

Astronomy

1

Abundance, Crab Nebula, Emission Spectra, Photoionization, Astronomical Spectroscopy, Electron Density (Concentration), Lyman Spectra, Temperature Distribution

Scientific paper

The observed filaments spectrum has been separated into three groups. The photoionization models for each group of filaments is constructed. In each case the agreement of calculated and observed line intensity is good. The results of calculation show that the dispersion of the abundances He/H = 0.15 - 1.20, N/H = (0.28 - 0.92)×10-4, S/H = (0.10 - 0.64)×10-4 and, possibly, O/H = (1.35 - 2.3)×10-4 is real.

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