IRAS 09371+1212 - an icy evolved, mass-losing star with a unique IR spectrum

Details IRAS 09371+1212 - an icy evolved, mass-losing star with a unique IR spectrum IRAS 09371+1212 - an icy evolved, mass-losing star with a unique IR spectrum

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...176l..13f&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 176, no. 1, April 1987, p. L13-L16. CNRS-supported research.

Astronomy and Astrophysics

Astronomy

46

Infrared Astronomy, Planetary Nebulae, Stellar Mass Ejection, Stellar Spectra, Asymptotic Giant Branch Stars, Carbon Monoxide, Far Infrared Radiation, Infrared Astronomy Satellite, Line Spectra, Millimeter Waves, Stellar Envelopes

Scientific paper

Observations of IRAS 09371+1212, obtained in the 115.3-GHz (J = 1-0) line of CO using the 30-m IRAM radio telescope at Pico Veleta, Spain in March 1986, are reported. The data are presented in tables, graphs, and maps and characterized in detail. From the LSR velocity of -10 km/s, the FWZI of 49 km/s, the line shape, and the M visible spectrum the object is inferred to be a post-AGB star with an expanding circumstellar envelope which has undergone a recent order-of-magnitude luminosity loss and which contains a large amount of ice at 50-65 K (as well as silicates and CO), but no OH. The unique nature of this object is stressed.

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