Ground-based observation of the Venus 1.27-μm O 2 airglow

S. Ohtsuki, N. Iwagami, H. Sagawa, Y. Kasaba, M. Ueno, T. Imamura

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

We conducted near-infrared imaging spectroscopy of the nightside of Venus with a 1.88-m telescope at Okayama Astrophysical Observatory, Japan. The 1.3-μm region spectra show 1.27-μm O 2 airglow feature and thermal emission from the lower atmosphere. A bright airglow feature of 5 mega-Rayleigh (1 MR = 10 12 photons cm -2 s -1 into 4π sr) was found at around the anti-solar point, as in the previous studies. The hemispheric distribution of 1.3-μm thermal emission shows an equatorial depression similar to that of the 2.3-μm region. The hemispheric distribution of the rotational temperature shows an enhancement at around the anti-solar point overlapping the bright region. This may suggest adiabatic and/or chemical heating due to downward flow.

Original languageEnglish
Pages (from-to)2038-2042
Number of pages5
JournalAdvances in Space Research
Volume36
Issue number11
DOIs
Publication statusPublished - 2005 Jan 1
Externally publishedYes

Keywords

  • Airglow
  • Ground-based observation
  • Molecular oxygen
  • Near infrared
  • Spectroscopy
  • Venus

ASJC Scopus subject areas

  • Aerospace Engineering
  • Astronomy and Astrophysics
  • Geophysics
  • Atmospheric Science
  • Space and Planetary Science
  • Earth and Planetary Sciences(all)

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