IRAS 09371+1212 : an icy evolved, mass-losing star with a unique IR spectrum.
Abstract
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.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- April 1987
- Bibcode:
- 1987A&A...176L..13F
- Keywords:
-
- 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;
- Astrophysics