Abstract
We report measurements of the magnetic tuning and broadening of single rotational lines in the (1,0) band of the F4Δ-X 4Δ transition of FeH. Since the Zeeman effect of FeH in the lowest rotational levels of the ground X4Δ state has been measured previously, the present measurements provide information on g-factors for two upper state rotational levels. The Zeeman splitting in the Q(7/2) line of the (1,0) band of the F4Δ7/2-X 4Δ7/2 transition was successfully modeled using a phenomenological approach. The observation of Zeeman broadening in the corresponding R(7/2) line has also made it possible to extract an approximate g-factor for the J = 9/2 level of the F4Δ7/2(ν = 1) vibronic state. The g-factors determined have been used to predict spectral patterns for numerous rotational lines in the F4Δ 7/2-X4Δ7/2 system; these are compared with observed features in the sunspot umbral spectrum.
Original language | English (US) |
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Pages (from-to) | 854-861 |
Number of pages | 8 |
Journal | Astrophysical Journal |
Volume | 679 |
Issue number | 1 |
DOIs | |
State | Published - May 20 2008 |
Keywords
- Magnetic fields
- Sun: magnetic fields
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science