Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976apj...203..625g&link_type=abstract
Astrophysical Journal, vol. 203, Feb. 1, 1976, pt. 1, p. 625-627, 629-635.
Astronomy and Astrophysics
Astrophysics
24
Astronomical Spectroscopy, Emission Spectra, Nebulae, Novae, Stellar Mass Ejection, Atomic Collisions, Fine Structure, Forbidden Bands, H Alpha Line, Radial Velocity, Spectral Resolution, Velocity Distribution
Scientific paper
Results are reported for analysis of high-resolution line profiles obtained with an echelle spectrograph in the postnova HR Del. The investigated emission lines include H-alpha, the forbidden N II lines at 6548 and 6583 A, and the forbidden O III line at 5007 A. Heliocentric radial velocities of the line components are given along with their normalized relative intensities. The lines are found to have considerable structure which probably arises from condensations in the expanding nebula. It is shown that all the lines contain two major velocity groups, designated as shells A and B, and that shell B is more highly ionized and probably has a higher electron temperature. A large ratio between the intensities of the 6584-A and H-alpha lines is observed in shell A, and it is concluded that this is consistent with a nitrogen excess of a factor of two or more.
Anderson Martha C.
Gallagher Jay S.
No associations
LandOfFree
High-dispersion observations of emission lines in the postnova HR Delphini 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 High-dispersion observations of emission lines in the postnova HR Delphini, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-dispersion observations of emission lines in the postnova HR Delphini will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1297386