The application of a Bessel transform to the determination of stellar rotational velocities |
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| Authors: | T J Deeming |
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| Institution: | (1) Department of Astronomy, University of Texas at Austin, Texas, U.S.A. |
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| Abstract: | A method for analysing line profiles by means of a transform using Bessel functions is described. This yields the stellar rotational velocityv sini, to an accuracy of about ±1 km s–1 for rotational velocities greater than about 5 km s–1, provided that rotation is the major source of line broadening. The theory of the method is a special case of a general theory of linear transforms in data analysis, which is outlined in an appendix. |
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