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Stark widths of astrophysically important four- and five-times charged ion lines

Published online by Cambridge University Press:  26 May 2016

Milan S. Dimitrijević
Milan S. Dimitrijević*
Affiliation:
Astronomical Observatory, Volgina 7, 11050 Belgrade, Yugoslavia

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Important astrophysical applications of Stark broadening of spectral lines of multiply charged ions are in the physics of stellar interiors (Seaton 1987). In subphotospheric layers, the modelling of energy transport requires radiative opacities and thus, certain atomic processes must be known accurately. At these high temperatures (105 K or more) and densities (1017 − 1022 cm-3) Stark broadening of strong multicharged ionic lines plays a non-negligible role in the calculation of the opacities, especially in the UV. Moreover, with the development of spectroscopic investigations from space, UV and extreme UV spectral line research has been further stimulated.

Type
5. Be Stars: Spectroscopy and Photometry
Information
Symposium - International Astronomical Union , Volume 162: Pulsation, Rotation and Mass Loss in Early-Type Stars , 1994 , pp. 335 - 336
Copyright
Copyright © Kluwer 1994 

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