A search for observational evidence of OH molecule photoproduction
Abstract
Observational evidence for OH molecule photoproduction by the interstellar UV radiation in the circumstellar envelopes of Mira variables has been searched for. A sample of Me-type Miras was observed in the main OH maser lines with the Nancay radio telescope. Two new lines were detected. The intensity of the 156.5-nm wavelength interstellar radiation is estimated by integration of the observed UV light of OB stars in common star catalogues. A statistically significant trend is found that OH Miras are illuminated by stronger UV fields than non-OH objects.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- September 1995
- DOI:
- 10.1093/mnras/276.2.635
- Bibcode:
- 1995MNRAS.276..635S
- Keywords:
-
- MASERS;
- MOLECULAR PROCESSES;
- CIRCUMSTELLAR MATTER;
- STARS: MASS-LOSS;
- STARS: VARIABLES: OTHER;
- RADIO LINES: STARS