Circumstellar Shells Resolved in the IRAS Survey Data. I. Data Processing Procedure, Results, and Confidence Tests
Abstract
We have examined the IRAS 60 and 100 micron survey data covering 512 evolved stars and young planetary nebulae for evidence of spatially resolved structure. A simple model, consisting of a central unresolved source surrounded by a resolved isothermal shell, was fitted to the data for each star. Seventy-six stars were found to be resolved in the 60 micron data. Tests have been performed to verify that the extended structure seen is not an artifact of the data-processing algorithm.
- Publication:
-
The Astrophysical Journal Supplement Series
- Pub Date:
- June 1993
- DOI:
- Bibcode:
- 1993ApJS...86..517Y
- Keywords:
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- Infrared Astronomy Satellite;
- Late Stars;
- Planetary Nebulae;
- Spatial Resolution;
- Stellar Envelopes;
- Stellar Mass Ejection;
- Data Processing;
- Infrared Stars;
- Astrophysics;
- STARS: MASS LOSS;
- STARS: CIRCUMSTELLAR MATTER;
- INFRARED: STARS;
- ISM: PLANETARY NEBULAE: GENERAL;
- STARS: LATE-TYPE