IUE observations of the high velocity symbiotic star AG Draconis during active phase

Details IUE observations of the high velocity symbiotic star AG Draconis during active phase IUE observations of the high velocity symbiotic star AG Draconis during active phase

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...119..285v&link_type=abstract

Astronomy and Astrophysics, vol. 119, no. 2, Mar. 1983, p. 285-293.

Astronomy and Astrophysics

Astronomy

41

Binary Stars, Emission Spectra, Line Spectra, Stellar Spectrophotometry, Ultraviolet Astronomy, Abundance, Dwarf Stars, Giant Stars, Iue, Spectral Resolution, Spectrum Analysis, Stellar Temperature, Stellar Winds, Ultraviolet Spectra, Wind Velocity

Scientific paper

New high and low resolution IUE spectra of AG Dra, obtained when the star was still in its active phase, are analyzed and interpreted. The spectra are characterized by strong permitted and weak intercombination emission lines belonging to a wide ionization range, from O I, Mg II, to He II, O V, S V, superimposed on an intense continuum. Several strong lines are identified as derived from the 2200 A interstellar band. All the emission lines are shifted by -115 km/s with respect to the interstellar lines. He II 1640 has extended wings probably not produced by Thomson scattering. The N V resonance double displays a P Cygni profile with an absorption minus emission velocity separation of 120 km/s, which seems to arise in a warm wind. Two possible explanations of this warm wind are discussed. A hot continuum shortwards of 1600 A and a flatter continuum at longer wavelengths are identified in the UV continuum. Energy balance considerations lead to the conclusion that AG Dra is a binary system.

Affiliated with

Also associated with

No associations

Rating

IUE observations of the high velocity symbiotic star AG Draconis during active phase 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 IUE observations of the high velocity symbiotic star AG Draconis during active phase, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and IUE observations of the high velocity symbiotic star AG Draconis during active phase will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1464850