Identification of FeH molecular lines in the spectrum of a sunspot umbra

¹ Astronomy Department, Faculty of Science, Cairo University, Cairo, Egypt
² currently: Institut für Theoretische Astrophysik der Universität Heidelberg, Tiergartenstrasse 15, D-69121 Heidelberg, Germany
³ Institute of Theoretical Astrophysics, University of Oslo, Blindern, Oslo, Norway

Corresponding author: Send offprint request to: N.H. Youssef, cu090@frcu.eun.eg

Received: 18 August 1997
Accepted: 7 October 1997

Abstract

A high resolution spectrum of a large - sunspot umbra is used for identification of two bands and of the - system of the FeH molecule, in addition to the previously identified bands and of the same system. The spectrum was obtained with FTS of the McMath-Pierce Solar Telescope of NSO/NOAO at Kitt Peak.