High-Resolution Infrared Measurements of H2O and SiO in Sunspots

Details High-Resolution Infrared Measurements of H2O and SiO in Sunspots High-Resolution Infrared Measurements of H2O and SiO in Sunspots

Feb 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006soph..233..205s&link_type=abstract

Solar Physics, Volume 233, Issue 2, pp.205-213

Physics

2

Scientific paper

Ultra-high-resolution spectroscopic measurements (R ≈ 107) of water vapor and silicon monoxide in sunspots are presented. Observations were performed using the Cologne Tunable Heterodyne Infrared Spectrometer (THIS) at the McMath Pierce Solar Observatory. Mid-infrared molecular absorption lines around 10 μm were recorded and resolved in full detail. The linewidth and shape can thus be determined with high precision and were used to calculate kinetic temperatures which are much higher than the physical temperatures of the sunspot.

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