Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988esasp.281b.183o&link_type=abstract
In ESA, Proceedings of the Celebratory Symposium on a Decade of UV Astronomy with the IUE Satellite, Volume 2 p 183-186 (SEE N89
Astronomy and Astrophysics
Astronomy
Iue, Spaceborne Astronomy, Stellar Spectra, Symbiotic Stars, Ultraviolet Astronomy, Ultraviolet Spectra, Emission Spectra, Novae, Periodic Variations, Radial Velocity
Scientific paper
Ultraviolet emission of the symbiotic star AG Peg which shows periodic variations in the central radial velocity and total flux of several emission lines was studied. Seventeen high dispersion archival SWP spectra covering the period from 1978.6 to 1986.9 were examined. Gaussian profiles were fit to each of the narrow emission lines of O III, N III, O IV, Si IV, C III, and Si III. Radial velocity curves with an amplitude of 15 to 20 km/sec were measured for the N III 1748.6 A, 1749.7 A lines, the O III 1660.8 A, 1666.2 A lines, and the C III 1908.7 A line. The O IV and Si IV lines were generally too weakly exposed to derive reliable velocity curves, while the Si III line was often overexposed. The N III, O III, and C III line fluxes are correlated with phase. These line flux and velocity changes are consistent with formation of the lines near the red giant.
Anderson Christopher M.
Oliversen Nancy Ann
Remage Evans Nancy
No associations
LandOfFree
The nebular velocity structure of AG Pegasi 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 nebular velocity structure of AG Pegasi, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The nebular velocity structure of AG Pegasi will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1180886