ISSN:
1573-093X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We report high resolution measurements of the center-to-limb variation of the Mgi line at 4571.1 Å. This forbidden line is of interest because it should be formed in LTE. Comparison of our measurements with the Harvard-Smithsonian Reference Atmosphere show that the line center radiation originates in the temperature minimum region from 330 to 550 km above the point where τ continuum = 1. Observations near the limb confirm that the temperature minimum is ∼4200K.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00153888
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