Statistics – Computation
Scientific paper
Oct 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...321l.151c&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 321, Oct. 15, 1987, p. L151-L157.
Statistics
Computation
63
Infrared Astronomy Satellite, Infrared Sources (Astronomy), Optical Emission Spectroscopy, Planetary Nebulae, Stellar Spectrophotometry, Wolf-Rayet Stars, Computational Astrophysics, High Resolution, Hydrocarbons, Radial Velocity, Spectral Bands, Stellar Winds
Scientific paper
Spectroscopy of the starlike optical counterpart to IRAS 21282+5050, a source with the "hydrocarbon" infrared emission band spectrum, shows an O7(f)-[WC 11] planetary nebula nucleus suffering an extinction of 5.7 mag. Emission-line widths in the WC spectrum are only ≡100 km s-1, indicating a very slow stellar wind. Optical diffuse interstellar bands (DIBs) are prominent. Five DIBs are strongly enhanced, namely λλ5797, 6196, 6203,6283, and 6613. The presence of circumstellar hydrocarbon molecules may explain both the infrared emission bands and the enhanced DIBs.
Cohen Martin
Jones Burton F.
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