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Science. 1995 May 26;268(5214):1155-8.

Water on the sun.

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  • 1Kitt Peak National Observatory, National Optical Astronomy Observatories, Tucson, AZ 85726, USA.


High-resolution infrared spectra of sunspot umbrae have been recorded with the 1-meter Fourier transform spectrometer on Kitt Peak. The spectra contain a very large number of water absorption features originating on the sun. These lines have been assigned to the pure rotation and the vibration-rotation transitions of hot water by comparison with high-temperature laboratory emission spectra.

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