Using laboratory spectroscopy to identify lines in the K- and L-band spectrum of water in a sunspot

N F Zobov, O L Polyansky, J Tennyson, S V Shirin, R Nassar, T Hirao, T Imajo, P F Bernath, L Wallace

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The infrared spectrum of a sunspot is analyzed in the L-band region 3.1-4.0 mu m (2497-3195 cm(-1)) and 2.02-2.35 mu m (4251-4962 cm(-1)) in the K band. A new laboratory emission spectrum covering 2500-6000 cm(-1) is analyzed to help make the assignments. Quantum number assignments are made using linelists computed using variational calculations, assisted by tabulations of experimental energy levels. There are 1207 new (H2O)-O-16 lines assigned in the L band and 508 new lines in the K band. Vibrational band origins of 11242.8 +/- 0.1 cm(-1) and 12586 +/- 1 cm(-1) are obtained for the (051) and (061) states.

Original languageEnglish
Pages (from-to)994-998
Number of pages5
JournalThe Astrophysical Journal
Issue number2
Publication statusPublished - 20 Feb 2000


  • molecular data
  • sunspots
  • infrared : solar system
  • infrared : stars
  • SUN
  • CM-1

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