K-Band Spectrum of Water in Sunspots

Details K-Band Spectrum of Water in Sunspots K-Band Spectrum of Water in Sunspots

Nov 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apj...489l.205p&link_type=abstract

Astrophysical Journal Letters v.489, p.L205

Astronomy and Astrophysics

Astronomy

28

Molecular Data, Sun: Sunspots, Infrared: Stars, Infrared: Solar System

Scientific paper

The infrared spectrum of a sunspot, published in the form of an atlas by Wallace & Livingston, is analyzed in the 2.17--1.96 mu m (4600--5100 cm-1) region where most of the transitions are due to hot water. Assignments are made using variational nuclear motion calculations based on a high-level ab initio electronic surface for water, with allowance for both adiabatic and nonadiabatic corrections to the Born-Oppenheimer approximation. 485 new lines are assigned to transitions in 10 vibrational bands. Only two of these vibrational bands have been previously identified. Newly assigned bands include the (061)--(050) and (071)--(060) vibrational transitions, for which even the lower vibrational levels had not been previously characterized. Assignments are made to levels as high as ~17,000 K above the origin.

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