Abstract
Several ground-based observations of the Venus 1.27-μm O 2 airglow were carried out from 2002 to 2005. Spectral image cubes were taken with the Okayama Astrophysical Observatory/infrared imaging spectrometer (superOASIS), the Gunma Astronomical Observatory/Cassegrain Near-Infrared Camera and NASA's Infrared Telescope Facility/cryogenic echelle spectrograph (CSHELL). The brightest airglow features were found at around the anti-solar point, which is in agreement with previous studies. We derived the rotational temperature distributions on the nightside hemisphere from observed airglow spectra. The temperature shows a weak positive correlation with the airglow intensity. The result indicates the bright region is heated chemically and/or dynamically, and supports the existing scenario for the Venus O 2 airglow. That is, the airglow is excited by the descending oxygen transported from the dayside.
Original language | English |
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Pages (from-to) | 1375-1380 |
Number of pages | 6 |
Journal | Advances in Space Research |
Volume | 41 |
Issue number | 9 |
DOIs | |
Publication status | Published - 2008 |
Externally published | Yes |
Keywords
- Airglow
- Ground-based observation
- Near infrared
- Rotational temperature
- Spectroscopy
- Venus
ASJC Scopus subject areas
- Aerospace Engineering
- Astronomy and Astrophysics
- Geophysics
- Atmospheric Science
- Space and Planetary Science
- Earth and Planetary Sciences(all)