Spectrophotometric observations of CI CYG in 1979

Details Spectrophotometric observations of CI CYG in 1979 Spectrophotometric observations of CI CYG in 1979

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....94..290i&link_type=abstract

Astronomy and Astrophysics, vol. 94, no. 2, Feb. 1981, p. 290-293.

Astronomy and Astrophysics

Astrophysics

8

Companion Stars, Line Spectra, Stellar Spectrophotometry, Electron Density (Concentration), Emission Spectra, Iue, Oxygen Spectra

Scientific paper

Spectrophotometric observations of the symbiotic star CI Cyg were carried out from May to December 1979 with the 122 cm telescope of the Astrophysical Observatory of Asiago, as a part of a systematic survey of symbiotic stars.
In that period [Fe VII] almost disappeared while [O III] and [Ne III] maintained their strength.
Some of our spectra were taken on June 12, one day after the day of an ultraviolet observation with the IUE satellite. The spectra were analyzed and from the intensity ratio of [O III] λ4363 to λ5007 + λ4959 an electron density ∼107 cm-3 was derived. This value is about 5 10-2 times lower than that estimated from the IUE observation by the intensity ratio of the ultraviolet semi-forbidden lines C III]/ N III]. This large discrepancy in electron density may suggest that the emission regions of the lines considered are different.

Affiliated with

Also associated with

No associations

Rating

Spectrophotometric observations of CI CYG in 1979 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 Spectrophotometric observations of CI CYG in 1979, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectrophotometric observations of CI CYG in 1979 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1406821