CAOSP abstracts, Volume: 23, year: 1993
- Author(s): ZBORIL, M.
- Journal: Contributions of the Astronomical Observatory Skalnate Pleso,
vol. 23, p. 5-10.
- Date: 07/1993
- Title: Microturbulence in the atmosphere of CP stars Vega and o Pegasi
- Keyword(s): STARS, CHEMICALLY PECULIAR, MICROTURBULENCE
- Pages: 5 -- 10
Abstract:
Using the neutral and singly ionized lines of Fe and singly ionized lines
of Ti and Cr in visual part of the spectrum, microturbulence was investigated
in the atmospheres of Vega and $\it o$ Pegasi by using a conventional method.
In the case of o Peg the data were re-analyzed by including the magnetic field
in line opacity. The microturbulent value for Vega was found to be
slightly higher than 1 km/s. In the case of $\it o$ Pegasi the microturbulent
value is significantly higher than 1 km/s and the trend of dependence upon
atmospheric height was marginally detected in the Fe II ion. No trend of
microturbulent dependence on atmospheric height was found after including the
magnetic field in line opacity.
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