Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.257p..33p&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 257, no. 3, Aug. 1, 1992, p. 33P-36P. Research supporte
Astronomy and Astrophysics
Astronomy
43
Astronomical Spectroscopy, Emission Spectra, Hydrogen, Planetary Nebulae, Stellar Mass Ejection, Nitrogen, Novae, Oxygen, Stellar Composition, Stellar Winds
Scientific paper
Images and high-resolution spectra of the hydrogen-deficient knot at the center of the old planetary nebula A58 are presented. The spectra confirm that this region contains essentially no hydrogen, as previously suspected. Emission lines from the knot are broad (FWHM is approximately equal to 180 and 270 km/s for forbidden N II and O III lines, respectively) and are bluehifted by about 100 km/s relative to the systemic velocity. These data are analyzed in terms either of a one-sided collimated flow (the rear-side flow being obscured or suppressed) or of a dusty, spherical wind (where the rear side of the compact object is obscured by dust) with the data lending marginal support for the collimated flow model. The collimated flow or fast, H-poor wind is very likely to be associated with the 1919 novalike event in Aquila.
Clegg Robin E. S.
Hill Philip W.
Lawson Warrick A.
Pollacco Don L.
No associations
LandOfFree
A hydrogen-deficient flow in the centre of the planetary nebula A58 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 A hydrogen-deficient flow in the centre of the planetary nebula A58, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A hydrogen-deficient flow in the centre of the planetary nebula A58 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1167945