H 3 +, in planetary Ionospheres: Emission Spectrum 岡武史 Department of Astronomy and Astrophysics, Departmen of Chemistry and The Enrico Fermi Institute,

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Presentation transcript:

H 3 +, in planetary Ionospheres: Emission Spectrum 岡武史 Department of Astronomy and Astrophysics, Departmen of Chemistry and The Enrico Fermi Institute, The University of Chicago COE Symposium, Kobe University, November 17, 2003

Chemical Evolution of Star-forming Regions E. F. van Dishoeck & G. A. Blake Annual Review of A & A 1998

H 3 + Vibration-rotation spectrum T. Oka, Phys. Rev. Lett. 45, 531 (1980) Ortho Para T = 30 K → T = 1000 K Interstellar H 3 + Planetary H 3 +

Serendipitous Discovery of the 2 2 →0 H 3 + Emission in the Auroral Region of Jupiter Trafton, Lester, Thompson, ApJ 343 L73 (1989)

The Intense and Pure 2 →0 H 3 + Emission Maillard, Drossart, Watson, Kim, Caldwell, ApJ 363 L37 (1990)

Background Free Emission !! Geballe, Jagod, Oka

Metallic Hydrogen

Io Volcano

Oka, Revs. Modern Phys (1992)

Magnetohydrodynamic plasma of Jupiter H 3 + aurora

Background Free Emission Geballe, Jagod, Oka

Giant Planets

Saturn and Uranus T. R. Geballe, M.-F. Jagod, & T. Oka, ApJ. 408, L109 (1993) L. M. Trafton, et al., ApJ. 405, 761 (1993)

Uranus

Chemical Evolution of Star-forming Regions E. F. van Dishoeck & G. A. Blake Annual Review of A & A 1998

Nature, 418, 57 (2002) Nature, 418, 31 (2002)

Exo-planets

Active galactic nuclei Gas giant protoplanet Ubiquitous H 3 +