The depth dependence of penumbral absolute velocities

被引：14

作者：

Balthasar, H ^{[1
]}

Schmidt, W ^{[1
]}

Wiehr, E ^{[1
]}

机构：

[1] UNIV STERNWARTE GOTTINGEN,D-37083 GOTTINGEN,GERMANY

来源：

SOLAR PHYSICS | 1997年 / 171卷 / 02期

关键词：

D O I：

10.1023/A:1004941617280

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Penumbral line-core shifts at different heights are determined from the lines Fe I 5434.5 Angstrom, Fe I 5435.2 Angstrom, and Ni I 5435.8 Angstrom using two adjacent water vapor lines for an absolute wavelength scale. The large granular blue shift of 0.6 km s(-1) for the faint Fe 5435 line from deep layers yields for deduced from the bisectors of the line wings of Ni 5436 and Fe 5434, thus supporting the concern against an interpretation of the line asymmetries in term of a velocity gradient with depth.

引用

页码：331 / 336

页数：6