The combined effects of expansion and rotation on spectral line shapes

Details The combined effects of expansion and rotation on spectral line shapes The combined effects of expansion and rotation on spectral line shapes

May 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...222..220d&link_type=abstract

Astrophysical Journal, Part 1, vol. 222, May 15, 1978, p. 220-225. Research supported by the Research Corp.

Astronomy and Astrophysics

Astrophysics

10

Convolution Integrals, Line Shape, Line Spectra, Stellar Motions, Stellar Rotation, Stellar Spectra, Asymmetry, Doppler Effect, Stellar Atmospheres, Stellar Mass, Stellar Winds

Scientific paper

A convolving function for approximating the combined effects of stellar rotation and radial motion without a velocity gradient on spectral line shapes is developed. It is shown that the broadening function which is convolved with an intrinsic profile to write the observed profile is not simply related to the functions for pure rotation or pure radial motion. Thus if the line profile is asymmetric, the effects of rotation cannot be estimated by a convolution; mass-loss rates calculated by that method need to be revised.

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