Title: DIFFERENTIAL ROTATION OF STARS AND SPECTRAL LINE PROFILE
Abstract:In this paper the following three problems are studied:(i)the effect of differential rotation on the shape of a spectral line;(ii)the effect of differential rotation on the measurement of equatorial r...In this paper the following three problems are studied:(i)the effect of differential rotation on the shape of a spectral line;(ii)the effect of differential rotation on the measurement of equatorial rotational velocities of stars;(iii)the possibility of discovering differential rotation. Two main results are obtained:(i)for the present precision of measurement,dif- ferential rotation cannot be discovered from the analysis of line profile;(ii)for a dif- ferentially rotating star,if we treat it as if it had rigid-body rotation,then the value of v sin i determined would be smaller than the true value.The difference between the determined value and the true value can be approximately estimated by formula (8)Read More
Publication Year: 1964
Publication Date: 1964-01-01
Language: en
Type: article
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