IRAS 05341 + 0852 - an evolved star with unique 3-micron emission features

Details IRAS 05341 + 0852 - an evolved star with unique 3-micron emission features IRAS 05341 + 0852 - an evolved star with unique 3-micron emission features

Aug 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...235l...9g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 235, no. 1-2, Aug. 1990, p. L9-L12. Research supported by ASTRON.

Astronomy and Astrophysics

Astronomy

47

Emission Spectra, Infrared Astronomy Satellite, Planetary Nebulae, Stellar Evolution, Asymptotic Giant Branch Stars, Interstellar Matter, Stellar Spectra, Stellar Spectrophotometry

Scientific paper

Remarkable 3-micron emissoin features were discovered in IRAS 05341 + 0852, an optically visible star with IRAS colors, suggesting that it has left the asymptotic giant branch and is becoming a planetary nebula. The near-to-mid infrared energy distributions of IRAS 05341 + 0852 and a similar object, IRAS 09296 + 1159, are similar to those of young planetary nebulae. The 3-micron features in these objects occur near or at the normal wavelengths of the 'PAH' features, but, in IRAS 05341, the profiles and relative strengths are highly abnormal; in particular, the 3.4-micron feature is as intense as the unusually narrow 3.3-micron feature.

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