Abstract
view Abstract Citations (32) References (21) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Distinction Between - and Macroturbulence in the Solar Photosphere Using Line Profiles Elste, Guenther H. E. Abstract On the basis of line-profile studies of sixty-two weak and medium-strong lines of Fe I, whose excitation potentials lie above 3 eV, a distinction between macro- and microturbulence is sought by comparing the observed relation between the half-widths and the equivalent widths with model computations. The shape of the lines near their cores as well as the curves of growth supports the result that the microturbulence velocity must be as low as 1 km/sec, while macroturbulent velocities of at least 1.5 km/sec are needed to explain the observations These conclusions are drawn from spectra of the center of the disk only. The more extensive study of the velocity field using the complete center-to4imb variation of the line profiles is in progress. Publication: The Astrophysical Journal Pub Date: June 1967 DOI: 10.1086/149210 Bibcode: 1967ApJ...148..857E full text sources ADS |
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