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First optical observation of the Moon’s sodium exosphere from the lunar orbiter SELENE (Kaguya)
Earth, Planets and Space volume 61, pages1025–1029(2009)
The first successful observations of resonant scattering emission from the lunar sodium exosphere were made from the lunar orbiter SELENE (Kaguya) using TVIS instruments during the period 17–19 December, 2008. The emission intensity of the NaD-line decreased by 12±6%, with an average value of 5.4 kR (kilorayleighs) in this period, which was preceded, by 1 day, by enhancement of the solar proton flux associated with a corotating interaction region. The results suggest that solar wind particles foster the diffusion of sodium atoms or ions in the lunar regolith up to the surface and that the time scale of the diffusion is a few tens of hours. The declining activity of the Geminid meteor shower is also one possible explanation for the decreasing sodium exosphere.
Hodges, R. R., Jr., Helium and hydrogen in the lunar atmosphere, J. Geophys. Res., 78(34), 8055–8064, 1973.
Hodges, R. R., Jr., Formation of the lunar atmosphere, Moon, 14, 139–157, 1975.
Hoffman, J. H., R. R. Hodges Jr., and D. E. Evans, Lunar atmospheric composition results from Apollo 17, Proc. Lunar Sci. Conf., 4th, 2875–2875, 1973.
Hunten, D. M., R.W. H. Kozlowski, and A. L. Sprague, A possible meteor shower on the Moon, Geophys. Res. Lett., 18, 2101–2104, 1991.
Hunten, D. M., G. Cremonese, A. L. Sprague, R. E. Hill, S. Verani, and R. W. H. Kozlowski, The Leonid meteor shower and the lunar sodium atmosphere, Icarus, 136, 298–303, 1998.
Kato, M., S. Sasaki, K. Tanaka, Y. Iijima, and Y. Takizawa, The Japanese lunar mission SELENE: Science goals and present status, Adv. Space Res., 42, 294–300, 2008.
McGrath, M. A., R. E. Johnson, and L. J. Lanzerotti, Sputtering of sodium on the planet Mercury, Nature, 323, 694–696, 1986.
Mendillo, M., J. Baumgardner, and J. K. Wilson, Observational test for the solar wind origin of the Moon’s sodium atmosphere, Icarus, 137, 13–23, 1999.
Potter, A. E. and T. H. Morgan, Discovery of sodium and potassium vapor in the atmosphere of the Moon, Science, 241, 675–680, 1988.
Potter, A. E. and T. H. Morgan, Observations of the lunar sodium exosphere, Geophys. Res. Lett., 18(11), 2089–2092, 1991.
Potter, A. E. and T. H. Morgan, Variation of lunar sodium emission intensity with phase angle, Geophys. Res. Lett., 21(21), 2263–2266, 1994.
Potter, A. E., R. M. Killen, and T. H. Morgan, Variation of lunar sodium during passage of the Moon through Earth’s magnetotail, J. Geophys. Res., 105, 15,073–15,084, 2000.
Smith, S. M., J. K. Wilson, J. Baumgardner, and M. Mendillo, Discovery of the distant lunar sodium tail and its enhancement following the Leonid meteor shower of 1998, Geophys. Res. Lett., 26, 1649–1652, 1999.
Sprague, A. L., R. W. H. Kozlowski, D. M. Hunten, W. K. Wells, and F. A. Grosse, The sodium and potassium atmosphere of the Moon and its interaction with the surface, Icarus, 96, 27–42, 1992.
Stern, S. A., The lunar atmosphere: History, status, current problems, and context, Rev. Geophys., 37, 453–491, 1999.
Taguchi, M., T. Sakanoi, S. Okano, M. Kagitani, M. Kikuchi, M. Ejiri, I. Yoshikawa, A. Yamazaki, G. Murakami, K. Yoshioka, S. Kameda, F. Ezawa, T. Toyota, W. Miyake, M. Nakamura, and K. Shiokawa, The Upper atmosphere and Plasma Imager/the Telescope of Visible light (UPI/TVIS) onboard the Kaguya spacecraft, Earth Planets Space, 2009 (submitted).
Tyler, A. L., R. W. H. Kozlowski, and D. M. Hunten, Observations of sodium in the tenuous lunar atmosphere, Geophys. Res. Lett., 15(10), 1141–1144, 1988.
Verani, S., C. Barbieri, C. R. Benn, and G. Cremonese, Possible detection of meteor stream effects on the lunar sodium atmosphere, Planet. Space Sci., 46, 1003–1006, 1998.
Verani, S., C. Barbieri, C. R. Benn, G. Cremonese, and M. Mendillo, Possible detection of meteor stream effects on the lunar sodium atmosphere, Mon. Not. R. Astron. Soc., 327, 244–248, 2001.
Wilson, J. K., S. M. Smith, J. Baumgardner, and M. Mendillo, Modeling an enhancement of the lunar sodium atmosphere and tail during the Leonid meteor shower of 1998, Geophys. Res. Lett., 26, 1645–1648, 1999.
Wilson, J. K., M. Mendillo, and H. E. Spence, Magnetospheric influence on the Moon’s exosphere, J. Geophys. Res., 111, A07207, doi:10.1029/2005JA011364, 2006.
Yamazaki, A., S. Tashiro, Y. Nakasaka, I. Yoshikawa, W. Miyake, and M. Nakamura, Sounding-rocket observation of O II 83.4-nm emission over the polar ionosphere, Geophys. Res. Lett., 29, 2005, 2002.
Yoshikawa, I., M. Nakamura, M. Hirahara, Y. Takizawa, K. Yamashita, H. Kunieda, T. Yamazaki, K. Misaki, and A. Yamaguchi, Observation of He II emission from the plasmasphere by a newly developed EUV telescope on board sounding rocket S-520-19, J. Geophys. Res., 109, 19897, 1997.
Yoshikawa, I., A. Yamazaki, G. Murakami, K. Yoshioka, S. Kameda, F. Ezawa, T. Toyota, W. Miyake, M. Taguchi, M. Kikuchi, and M. Nakamura, Telescope of extreme ultraviolet (TEX) onboard SELENE: science from the Moon, Earth Planets Space, 60, 407–416, 2008.
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Kagitani, M., Taguchi, M., Yamazaki, A. et al. First optical observation of the Moon’s sodium exosphere from the lunar orbiter SELENE (Kaguya). Earth Planet Sp 61, 1025–1029 (2009) doi:10.1186/BF03352953
- Lunar sodium exosphere
- lunar orbiter SELENE
- resonant scattering emission
- Geminid meteor shower