Chromospheric Emission and its Dependence on Latitude
Open Access
- 1 December 1956
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 116 (6) , 593-607
- https://doi.org/10.1093/mnras/116.6.593
Abstract
The observation and measurement of the total intensities at a succession Of heights in the chromosphere of the emission lines, hydrogen H α and helium D 3 at three series of latitudes on the limb of the Sun, are described. Results expressed in absolute units by comparison with the photosphere are tabulated for heights 2700 km and 4500 km in the chromosphere for the latitudes of the the three series. Investigation of the latitude dependence of the emission indicates a general trend with greater emission at the poles than at the equator for H α and the reverse for D 3 , together with local irregularities. An attempt has been made to correct the observed height distribution of emission for the effects of seeing.Keywords
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