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GROUND BASED AND MESSENGER OBSERVATIONS OF MERCURY’S EXOSPHERE

GROUND BASED AND MESSENGER OBSERVATIONS OF MERCURY’S EXOSPHERE. The Bepi-Colombo-MESSENGER Serena Workshop Key Largo, Florida, May 14-16, 2013 Rosemary Killen & The MASCS Team & Andrew Potter, Thomas Bida, Kevin Reardon. The Na D line.

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GROUND BASED AND MESSENGER OBSERVATIONS OF MERCURY’S EXOSPHERE

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  1. GROUND BASED AND MESSENGER OBSERVATIONS OF MERCURY’S EXOSPHERE The Bepi-Colombo-MESSENGER Serena Workshop Key Largo, Florida, May 14-16, 2013 Rosemary Killen & The MASCS Team & Andrew Potter, Thomas Bida, Kevin Reardon

  2. The Na D line

  3. Mercury Na Exosphere during transit of 2006, Dunn Solar TelescopePotter, Killen, Bida, Reardon

  4. Na exosphere Transit 2003Schleicher et al.

  5. Na Jan.08

  6. Na Observed from Kitt PeakPotter & Killen

  7. Sodium ExosphereMoon and Mercury

  8. Sodium Tail from Kitt Peak

  9. Potassium Emission

  10. Na/K Map

  11. Abundance of Potassium in RocksPatrick N. Peplowski, Larry G. Evans

  12. Abundance of Na in Rocks

  13. Corrected Na Emission vs. TAA

  14. Keck Observations Na June 9, 2000

  15. Mercury Ca 9 June 2000

  16. Ca May 3, 2002

  17. Ca June 27, 2005

  18. Ca May 15 2008

  19. Summary • Na/K shows N enhancement in the exosphere • but K is more enhanced in the rock at N than Na • Na scale height is lower over the polar regions than equatorial regions indicative of lower temperature -but this does not seem to be the case in MESSENGER data • Na occasionally shows high latitude enhancements but not always • Na sometimes shows dawn enhancements but not always • We saw no dawn enhancement in 2006: TAA 330 • Ca appears to be in a wide corona as seen from dawn or dusk

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