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Nebular spectrum of PU Vul in 2004
- Nebular spectrum of PU Vul in 2004
- Yoo, Kye-Hwa
- Ewha Authors
- SCOPUS Author ID
- Issue Date
- Journal Title
- JOURNAL OF THE KOREAN ASTRONOMICAL SOCIETY
- vol. 40, no. 2, pp. 39 - 47
- symbiotic star : PU Vul; high resolution spectrum : line variations; geometrical structure
- KOREAN ASTRONOMICAL SOCIETY
- SCIE; SCOPUS; KCI
- 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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