The spectrum of Jupiter's Great Red Spot: The case for ammonium hydrosulfide (NH4SH)

Mark J. Loeffler, Reggie L. Hudson, Nancy J. Chanover, Amy A. Simon

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Here we present new ultraviolet-visible spectra of irradiated ammonium hydrosulfide (NH4SH), a reported jovian atmospheric cloud component, for a range of temperatures and radiation doses and make assignments to the spectral features. We show that the combination of radiolysis and thermal annealing of NH4SH causes the originally featureless ultraviolet-visible reflectance spectrum to evolve into one that absorbs in the ultraviolet-visible region. Furthermore, we find that our laboratory spectra resemble HST spectra below 500nm, suggesting that the more stable reaction products of NH4SH radiolysis are likely an important component of the Great Red Spot.

Original languageEnglish (US)
Pages (from-to)265-268
Number of pages4
JournalIcarus
Volume271
DOIs
StatePublished - Jun 1 2016
Externally publishedYes

Keywords

  • Atmospheres, chemistry
  • Experimental techniques
  • Geophysics
  • Ices, UV spectroscopy
  • Jupiter atmosphere

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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