Variation of the profiles of medium-strong photospheric lines with heliographic latitude

✍ Scribed by B. Caccin; R. Falciani; A. Donati Falchi

• Publisher: Springer
• Year: 1978
• Tongue: English
• Weight: 167 KB
• Volume: 57
• Category: Article
• ISSN: 0038-0938
• DOI: 10.1007/bf00152039

✦ Synopsis

The asymmetric profiles of 11 metallic lines are studied, at ~ = 0.3, as functions of ~. Their variations cannot be interpreted as due to temperature effects, but might imply a dependence on q~ of the photospheric velocity field.

In a previous paper (Caccin et at., 1976) we analyzed the behaviour of weak photospheric lines observed at the McMath solar tower of the KPNO in double precision mode. The data, averaged in space and time (4 z 104x 2 x 102 km 2 on the