Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976stin...7618013d&link_type=abstract
Interpretation of measurements of the radial velocity of pulsars NASA Transl. into ENGLISH from Ann. Astrophys. (France), v. 18,
Astronomy and Astrophysics
Astrophysics
Pulsars, Radial Velocity, Stellar Motions, Atmospheric Turbulence, Radii, Stellar Atmospheres, Stellar Spectra
Scientific paper
Measurement of the radial velocity of pulsars is based on the average velocity of matter over the entire surface of the star. For this investigation, the measured spectra were assumed to be relatively dispersed in order to assume that measurement of the radial velocity may be based on measurement of the position of the base of the lines. The relationship between the ratio of the measured radial velocity u to the motion of the center of the pulsar and the speed of the matter w,w = psi u was established; this equation varies with the phase. Application of this theory to eta Aquilae was studied and a new curve for variations in the spectroscopic radius with the phase was derived. Comparison with variations in the photometric radius obtained by Pecker and Cannavaggia led to an analysis of the shape parameter and an estimate of the radius of the pulsar.
Duquesne Jacqueline
Schatzman Evry
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