Accession Number:

AD0621193

Title:

THE BEHAVIOR OF SOME LINES OF RARE-EARTH ELEMENTS ON THE SOLAR DISK,

Descriptive Note:

Corporate Author:

SACRAMENTO PEAK OBSERVATORY SUNSPOT N MEX

Personal Author(s):

Report Date:

1965-01-01

Pagination or Media Count:

11.0

Abstract:

The behavior of equivalent widths and half-widths of some lines of rare earth elements on the solar disk was investigated the center-limb effect, the transition from absorption to emission and the emission in active regions. The variation of the equivalent and half-widths for all the lines, from the center to the limb, was found to be alike and this was compared to that of other non-rareearth elements. The comparison shows that the W-values of the non-rare-earths increase from the center to the limb, while W-values of rare-earth elements decrease. For four lines of rare earth in the wings of H and K of Ca II lines an appearance of emission is observed when approaching the solar limb about rho 0.90. These four lines are strengthened in active regions and are observed in emission in some flares and flocculi at large distances from the limb rho approx 0.65. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE