Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...299..981w&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 299, Dec. 15, 1985, p. 981-986. Research supported by the Research Corp.
Astronomy and Astrophysics
Astrophysics
65
Astronomical Spectroscopy, Filaments, Oxygen Spectra, Supernova Remnants, Abundance, Chronology, Kinematics, Line Spectra
Scientific paper
A number of faint filaments in the Puppis A supernova remnant have been found to have spectra with strong oxygen lines, extremely weak Balmer lines, and radial velocities greater than 1500 km/s. These are very different from the bright filaments, which are nitrogen-rich and have velocities less than 300 km/s. The newly discovered filaments are spectroscopically similar to those found in young, oxygen-rich remnants, as typified by the fast-moving knots in Cas A. These Puppis A filaments are interpreted as knots of oxygen-rich supernova ejecta which remain relatively uncontaminated by interstellar material, despite the probable age of Puppis A of several thousand years. Spectra of the newly discovered filaments show, in addition to strong forbidden lines of O I, O II, and O III, permitted lines of O I: 7774, 8446 A. The permitted lines are attributed to recombination of O(+), and their strength relative to H is used to estimate that the O:H mass ratio is about 30.
Kirshner Robert P.
Winkler Frank P.
No associations
LandOfFree
Discovery of fast-moving oxygen filaments in Puppis A 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 Discovery of fast-moving oxygen filaments in Puppis A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discovery of fast-moving oxygen filaments in Puppis A will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1160378