IUE observations of the 'Butterfly' Nebula M2-9

Details IUE observations of the 'Butterfly' Nebula M2-9 IUE observations of the 'Butterfly' Nebula M2-9

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...287..353f&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 287, Dec. 1, 1984, p. 353-358.

Astronomy and Astrophysics

Astronomy

12

Astronomical Spectroscopy, Iue, Planetary Nebulae, Ultraviolet Astronomy, Abundance, Carbon, Interstellar Extinction, Magnesium, Nitrogen, Oxygen, Stellar Temperature, Ultraviolet Spectra

Scientific paper

IUE observations of the peculiar 'Butterfy' nebula M2-9 indicate that it is not a normal planetary nebula. The ultraviolet spectrum is characterized by few emission lines and a weak continuum. Mg II 2800 A is the strongest emission line present and may be indicative of a binary nucleus. Lines of N v, Q I, N III, N IV, Si III, and C III are seen, but C IV and O III are conspicuous by their absence. T(e) = 10,250 + or - 400 K was determined for the core. Nitrogen in the core is found to be overabundant by about a factor of 5 over the solar value. M2-9 may be an object in the early stages of becoming a planetary nebula.

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