THE DEVIATION OF PROFILES OF EMISSION LINES OF PROMINENCES FROM A DOPPLER PROFILE
Abstract
The profiles of the emission lines in four prominences were measured. Special attention was paid to the photometric procedure, the accuracy of intensity measurements is 1-2%. The astigmatism of the spectrograph and the asymmetry of the in strumental profile were determined. The graphical method was used for obtaining more precise data about the profiles. Some of the observed profiles have the form of a Gaussian curve in the core of the line, but deviate appreciably from it-the wings. Some other profiles deviate from the Gaussian curve in the center of the line, because of self-absorption. For most of the profiles the halfwidths were determined with an accuracy of 1-3%.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1963
- Accession Number
- AD0403680
Entities
People
- A. B. Dunn
- G. S. Ivanov-kholodny