the optical spectrum of thiozone, s 3 damian l. kokkin michael c. mccarthy patrick thaddeus nasa and...
TRANSCRIPT
The Optical Spectrum of Thiozone, S3
Damian L. KokkinMichael C. McCarthy Patrick Thaddeus
NASA and NSF
Io and sulfur rich systems
• Io, the inner most of the Galilean moons of Jupiter, is known as the most volcanically active environment in the solar system.
• As a result of this activity the atmosphere and surface of Io are known to be rich in sulfur containing molecules; to date diatomic sulfur (S2), SO and sulfur dioxide (SO2) detected and mapped in absorption and emission with a combination of satellite and ground based observations2,3,4.
• S3 and S4 have been proposed to be responsible for the optical spectrum observed of Io’s atmosphere with features in the blue-green region, but to date no high resolution optical spectra exist.
Composite image from the robotic Galileo spacecraft that orbited Jupiter from 1995 to 2003 of Io showing two different volcanic plumes.1
1. NASA/JPL
2. J. R. Spencer, K. L. Jessup, M. A. McGrath, G. E. Ballester, R. Yelle, Science, 288, 1208-1210, 2000
3. A. Moullet, Cfa SMA Science Symposium 2009
4. A. Moullet, E. Lellouch, R. Moreno, M. A. Gurwell and C. Morre, A&A, 482, 279-292, 2008
Past S3
R.I. Billmers and A.L. Smith, J. Phys. Chem. 1991, 95, 4242 B. Meyer, T. Stroyer-Hansen, AND T. V. Oommen, J. MOL. SPEC. 1972, 42, 335
Band Assignment
Band Wavelength (cm-1) Δλ (cm-1) Assignment
a 23052.1527 - 0
b 23404.1286 351.9759 1ν1
c 23534.6984 482.5457 1ν2
d 23754.827 702.6743 2ν1
e 23884.4788 832.3261 1ν1+1ν2
f 23998.1869 946.0342 2ν2
g 24101.0161 1048.8634 3ν1
h 24221.8082 1169.6555 2ν1+1ν2
ν1 = Symmetric bend
ν2 = Symmetric stretch
00
The Future
• Measure the mass selective spectrum of S4
in the green and red region via a discharge of S8.
• Perform observations on Io and other expected sulfur rich systems as the Rotten Egg Nebula