Ultraviolet Evidence for a Binary Nucleus of the Planetary Nebula SH 2-71

Details Ultraviolet Evidence for a Binary Nucleus of the Planetary Nebula SH 2-71 Ultraviolet Evidence for a Binary Nucleus of the Planetary Nebula SH 2-71

Jun 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999pasp..111..719f&link_type=abstract

The Publications of the Astronomical Society of the Pacific, Volume 111, Issue 760, pp. 719-721.

Astronomy and Astrophysics

Astronomy

5

Stars: Binaries: General, Planetary Nebulae: Individual (Sh 2-71), Ultraviolet: General

Scientific paper

Archival IUE spectra of the planetary nebula Sh 2-71 show a variable Mg
II lambda2800 emission line superposed on a variable stellar continuum.
The Mg II feature is thought to be excited in the chromosphere of the
cooler component of a binary nucleus, although other causes are also
plausible.

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