International Astronomy and Astrophysics Research Journal

Stark Widths and Shifts of Rh II in Chemically Peculiar Stars

Zoran Simić *

Astronomical Observatory, Volgina 7, 11060 Belgrade, Serbia.

Nenad M. Sakan

University of Belgrade, Institute of Physics, P.O.Box 57, 11001 Belgrade, Serbia.

*Author to whom correspondence should be addressed.

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Abstract

Over the last few years, many of the available data from modern experimental techniques and sophisticated theoretical methods have become even more important to stellar spectroscopy. Obviously, the shape of the spectral line is conditioned by natural broadening, Doppler and collision broadening. In this paper, we have considered the Stark broadening as a dominant form of collision broadening of the spectral lines of singly ionized rhodium. Here, Stark broadening parameters widths and shifts have been calculated for 31 Rh II transitions using the simplified modified semiempirical method of Dimitrijevi´c and Konjevi´c. We analyzed our results for Stark shifts and compared these obtained values for the whole set of calculated transitions. Also, Stark widths were analyzed on an appropriate model of the atmosphere of chemically peculiar stars, type A.

Keywords: Atomic data, lines, plasmas

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