publication . Article . 1982

The far-UV spectrum of the low-excitation planetary nebula HD 138403

Surdej, Jean; Heck, A.;
Open Access English
  • Published: 01 Dec 1982
  • Country: Belgium
Abstract
Two high-resolution far-UV spectra of the low-excitation planetary nebula HD 138403 are analyzed which were obtained with the IUE satellite over the wavelength range from 1170 to 2070 A. It is shown that the nebula's far-UV spectrum comprises a stellar continuum on which are superimposed a few emission lines, numerous interstellar absorption lines, and various types of P Cygni profiles. Evidence is examined for substantial mass loss from the central nucleus, with terminal velocities of the order of 800 km/s. The observed nebular emissions are used to derive the electron density in the main nebula. The results are taken as supporting the hypothesis that a bipolar...
Subjects
arXiv: Astrophysics::Galaxy AstrophysicsAstrophysics::Solar and Stellar AstrophysicsAstrophysics::High Energy Astrophysical Phenomena
free text keywords: PLANETARY NEBULAE, ULTRAVIOLET SPECTRA, HD 138403, MASS-LOSS, : Space science, astronomy & astrophysics [Physical, chemical, mathematical & earth Sciences], : Aérospatiale, astronomie & astrophysique [Physique, chimie, mathématiques & sciences de la terre]
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