Distributions of the Venus 1.27-μm O2 airglow and rotational temperature

S. Ohtsuki, N. Iwagami, H. Sagawa, M. Ueno, Y. Kasaba, T. Imamura, K. Yanagisawa, E. Nishihara

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Imaging spectroscopic observations of the Venus 1.27-μm O2 airglow were carried out with ground-based telescopes from 2002 to 2007. Spectral image cubes were taken with the Okayama Astrophysical Observatory/infrared imaging spectrometer (superOASIS), the Gunma Astronomical Observatory/near-infrared camera and NASA's Infrared Telescope Facility/cryogenic echelle spectrograph (CSHELL). The rotational temperature shows weak positive correlation with the airglow intensity. However, there are some regions that have almost same intensities but different temperatures. The intensities tend to decrease from the anti-solar point to the terminator besides local features. These results indicate that there are local strong downward flows superimposed on the subsolar-to-antisolar circulation.

Original languageEnglish
Pages (from-to)1391-1398
Number of pages8
JournalPlanetary and Space Science
Volume56
Issue number10
DOIs
Publication statusPublished - 2008 Aug 1

Keywords

  • Ground-based observation
  • Night airglow
  • Oxygen
  • Rotational temperature
  • Venus

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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