An OH survey of Mira-like objects from the IRAS point source catalog.
Abstract
An OH survey was performed of IRAS sources that present IR colors similar to Mira stars and for which an LRS observation was available. A total of 143 objects were observed in the 1612 and 1667 MHz lines: OH masers were found in 36 objects. The aim of this work is to characterize a large number of evolved circumstellar envelopes from microwave spectra, and to explore the evolution of Asymptotic Giant Branch objects. Special attention is given to the comparison of the objects found in the present study with the known Miras. The kinematics of the envelopes that show peculiar OH spectra is discussed.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- July 1990
- Bibcode:
- 1990A&A...233..112S
- Keywords:
-
- Astronomical Catalogs;
- Hydroxyl Emission;
- Infrared Astronomy;
- Mira Variables;
- Sky Surveys (Astronomy);
- Stellar Spectra;
- Asymptotic Giant Branch Stars;
- Microwave Spectra;
- Radiation Sources;
- Stellar Envelopes;
- Stellar Evolution;
- Astrophysics