Abstract
High-resolution Fourier transform spectrometer sunspot umbral spectra obtained at the National Solar Observatory/Kitt Peak were used to identify molecular rotational lines arising from the infrared band systems of CrH and CrD molecules. Measurement of the equivalent width used the Gaussian-profile approximation method, which is suitable especially for faint lines. Equivalent widths are measured for an adequate number of best lines of the A – X (0,0) band of CrH and the A – X (0,0;1,0) bands of CrD and, thereby, the effective rotational temperatures are estimated.
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Viswanathan, B., Shanmugavel, R., Bagare, S.P. et al. Identification of CrH and CrD Molecular Lines in the Sunspot Umbral Spectrum. Sol Phys 257, 261–269 (2009). https://doi.org/10.1007/s11207-009-9374-1
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DOI: https://doi.org/10.1007/s11207-009-9374-1