Microturbulence in the atmosphere of CP stars VEGA and O Pegasi

Details Microturbulence in the atmosphere of CP stars VEGA and O Pegasi Microturbulence in the atmosphere of CP stars VEGA and O Pegasi

Jul 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993coska..23....5z&link_type=abstract

Contributions of the Astronomical Observatory Skalnate Pleso, vol. 23, p. 5-10.

Astronomy and Astrophysics

Astronomy

Stars, Chemically Peculiar, Microturbulence

Scientific paper

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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