The Crab Nebula. I - Spectrophotometry of the filaments

Details The Crab Nebula. I - Spectrophotometry of the filaments The Crab Nebula. I - Spectrophotometry of the filaments

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...258....1f&link_type=abstract

Astrophysical Journal, Part 1, vol. 258, July 1, 1982, p. 1-10.

Astronomy and Astrophysics

Astrophysics

75

Crab Nebula, Forbidden Transitions, Spectrophotometry, Supernova Remnants, Electron Energy, Light (Visible Radiation), Line Spectra

Scientific paper

Relative line intensities in the 3700-7400 A region are obtained from new spectrophotometric measurements of ten positions in the Crab Nebula. O III forbidden line intensities imply electron temperatures of 11,000-18,300 K, while generally lower temperatures are indicated by the O II, N II and S II forbidden lines. The 6717 and 6731 A forbidden S II line ratio yields electron density estimates of 550-3500/cu cm, with a typical filament value of 1300 cu cm. While Balmer decrements are generally consistent with pure recombination, some filaments show steeper decrements. He line intensities are found to have significant variation. The presence of a moderately strong line at 7378 A, which may be due to the Ni II forbidden line is confirmed. Some filaments are found to exhibit a wide range of ionization states.

Affiliated with

Also associated with

No associations

Rating

The Crab Nebula. I - Spectrophotometry of the filaments does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Crab Nebula. I - Spectrophotometry of the filaments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Crab Nebula. I - Spectrophotometry of the filaments will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1022561