Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983pasp...95..135w&link_type=abstract
Astronomical Society of the Pacific, Publications, vol. 95, Feb. 1983, p. 135-139.
Astronomy and Astrophysics
Astronomy
30
Hot Stars, Main Sequence Stars, Radial Velocity, Shell Stars, Stellar Spectra, Absorption Spectra, Line Spectra, Spectrograms, Subdwarf Stars, White Dwarf Stars
Scientific paper
The evolving spectral emissions of the newly-formed shell star CH Cygni are discussed. Broad absorption features in H, He I, Mh II, Si II, Ca II, and several Fe II transitions have been observed recently, in contrast to previous measurements which displayed only continuum lines and weak emissions. An absence of Sr II absorption lines in the presence of strong Sc II emission lines suggest a radiation field ionizing Sr and Ca but not Sc. No model has been developed for the object due to the difficulty in explaining the emission features. The geometry of the system is suggested to be amenable to investigation with speckle measurements made from different angles, i.e., from different positions on the earth.
No associations
LandOfFree
CH Cygni 1981-82 - Now a shell star 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 CH Cygni 1981-82 - Now a shell star, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CH Cygni 1981-82 - Now a shell star will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1307425