Detectability of H2-Ar and H2-Ne Dimers in Jovian Atmospheres

Details Detectability of H2-Ar and H2-Ne Dimers in Jovian Atmospheres Detectability of H2-Ar and H2-Ne Dimers in Jovian Atmospheres

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997jass...14..251m&link_type=abstract

Journal of Astronomy and Space Sciences, vol. 14, no. 2, p. 251-258.

Astronomy and Astrophysics

Astronomy

Scientific paper

The detection of jovian hydrogen-hydrogen dimers through the clear telluric 2-micron window(Kim et al. 1995, Trafton et al. 1997) suggests possibility to detect noble gases in the form of dimer with hydrogen in jovian atmospheres. Since noble gases do not have spectral structures in the infrared, it has been difficult to derive their abundances in the atmospheres of jovian planets. If there is a significant component of noble gases other than helium in the jovian atmospheres. it might be detected through its dimer spectrum with hydrogen molecule. The relatively sharp spectral structures of hydrogen-argon and hydrogen-neon dimers compared with those of hydrogen-hydrogen dimers are useful for the detection, if an adequate signal-to-noise (S/N) is obtained. If we use a large telescope, such as the Keck telescope, with a long exposure time (>24 hours), then H2-Ar spectral structure may be detected.

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