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Calculating Line Profiles of Non-Spherical Stars

Authors: C. C. Lovekin; Robert G. Deupree;

Calculating Line Profiles of Non-Spherical Stars

Abstract

We present a method for calculating synthetic line profiles for rapidly rotating, non-spherical stars. This parallel code includes the effects of the Doppler shift produced by the surface rotation, and is capable of simultaneously calculating the observed line profile for several different degrees of inclination between the observer and the star’s rotation axis. As expected, we find a significant difference between the line profile of a rapidly rotating star viewed pole on and the same star viewed equator on. This is a result of the increasing component of the rotational velocity along the line of sight, leading to a larger Doppler broadening. Using this code, we hope to model several line profiles and compare with observed spectra for rapidly rotating stars. Based on the shapes of these line profiles, it may be possible to constrain the inclination of the star, and other properties such as the latitudinal temperature variation.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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