Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004apjs..154..271b&link_type=abstract
The Astrophysical Journal Supplement Series, Volume 154, Issue 1, pp. 271-274.
Astronomy and Astrophysics
Astronomy
12
Infrared: Ism, Ism: Abundances, Ism: Lines And Bands, Galaxies: Magellanic Clouds, Ism: Planetary Nebulae: Individual: Alphanumeric: Smp 83
Scientific paper
The first observations of the infrared spectrum of the LMC planetary nebula SMP 83 as observed by the recently launched Spitzer Space Telescope are presented. The high-resolution (R~600) spectrum shows strong emission lines but no significant continuum. The infrared fine-structure lines are used, together with published optical spectra, to derive the electron temperature of the ionized gas for several ions. A correlation between the electron temperature and the ionization potential is found. Ionic abundances for the observed infrared ions have been derived, and the total neon and sulfur abundances have been determined. These abundances are compared to average LMC abundances of H II regions in order to better understand the chemical evolution of these elements. The nature of the progenitor star is also discussed.
Barry Joseph D.
Bernard-Salas Jeronimo
Houck James R.
Morris Pat W.
Pottasch Stuart R.
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