Fabry-Pérot Observations of the Rosette Nebula

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Scientific paper

The results of observations of the Rosette Nebula using the equipment described by Meaburn and Smith (1968) and the reduction procedures outlined in Smith and Walker (1968) are reported. The results and conclusions differ markedly from an earlier report ( Flynn, 1965), of detailed radial-velocity observations of this nebula. The peak positions of the Hα-line profiles have now been shown not to vary greatly. The mean of 37 measurements at different points gives, for the heliocentric velocity of the Rosette nebula, +35±5 km sec-1. The widths of the lines are consistent with a model of randomly directed streaming motions of order 15 to 25 km sec-1.

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