Zirconium sulphide in S stars.
Abstract
Observations of J-band spectra from 7400-9700/cm were obtained for three type-M and type-S Mira variables near minimum light. Two sets of triple-headed bands been been discovered in the J-band spectrum of the S-type Mira R And: at 7877, 7957, and 8030/cm and at 8379, 8459, and 8530/cm. Additional heads are noted in R And at 7477/cm, near the short-wavelength edge of the atmospheric window, and at 8968, 9031, and 9063/cm. Conspicuous features in the spectra of Chi Cyg and R Cas have been identified with the VO, TiO, and H2O bands.
- Publication:
-
Monthly Notices of the Royal Astronomical Society
- Pub Date:
- June 1989
- DOI:
- 10.1093/mnras/238.4.1365
- Bibcode:
- 1989MNRAS.238.1365H
- Keywords:
-
- Inorganic Sulfides;
- Mira Variables;
- S Stars;
- Stellar Composition;
- Stellar Spectra;
- Zirconium Compounds;
- Carbon Monoxide;
- Cyanogen;
- Hydrides;
- Water;
- Zirconium Oxides;
- Astrophysics