Reference : The far-UV spectrum of the low-excitation planetary nebula HD 138403
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/17736
The far-UV spectrum of the low-excitation planetary nebula HD 138403
English
Surdej, Jean mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Heck, A. [ > > ]
Dec-1982
Astronomy and Astrophysics
EDP Sciences
116
80-88
Yes (verified by ORBi)
International
0004-6361
1432-0746
Les Ulis
France
[en] PLANETARY NEBULAE ; ULTRAVIOLET SPECTRA ; HD 138403 ; MASS-LOSS
[en] 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 structure is expanding around HD 138403 via a selective radiation process involving an edge- or line-locking mechanism or both.
Researchers ; Professionals
http://hdl.handle.net/2268/17736
http://adsabs.harvard.edu/abs/1982A&A...116...80S
The authors thank EDP Sciences for their deposit authorization

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
Surdej_A&A_1982_116_80_88.pdfPublisher postprint1.29 MBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.