Ultraviolet evidence for a binary nucleus of the planetary nebula Sh 2-71

Authors
Feibelman, WA
Citation
Wa. Feibelman, Ultraviolet evidence for a binary nucleus of the planetary nebula Sh 2-71, PUB AST S P, 111(760), 1999, pp. 719-721
Citations number
13
Categorie Soggetti
Space Sciences
Journal title
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC
ISSN journal
00046280 → ACNP
Volume
111
Issue
760
Year of publication
1999
Pages
719 - 721
Database
ISI
SICI code
0004-6280(199906)111:760<719:UEFABN>2.0.ZU;2-2
Abstract
Archival IUE spectra of the planetary nebula Sh 2-71 show a variable Mg II lambda 2800 emission line superposed on a variable stellar continuum. The M g II feature is thought to be excited in the chromosphere of the cooler com ponent of a binary nucleus, although other causes are also plausible.