Nebular Spectrum of PU Vul in 2004

Details Nebular Spectrum of PU Vul in 2004 Nebular Spectrum of PU Vul in 2004

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007jkas...40...39y&link_type=abstract

Journal of the Korean Astronomical Society, vol. 40, no. 2, pp. 39-47

Astronomy and Astrophysics

Astronomy

4

Symbiotic Star: Pu Vul, High Resolution Spectrum : Line Variations, Geometrical Structure

Scientific paper

A high resolution spectrum of PU Vul obtained at Bohyunsan Astronomy Observatory on April 9, 2004 is presented. At this phase, PU Vul was an emission-line star and its continuum was very weak. Emission lines of He II, H I, [Ne IV], [N II], [O III], [Ar V ] and [Fe VII] dominated the spectrum of PU Vul. Many of them exhibited hat-top profiles with strong and multi-peaked emissions on flat-tops of their profiles. Radial velocities for these lines were measured. Origins of the spectral lines are discussed in terms of the wind and the photoionization models.

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