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Title: The effect of carbon monoxide on planetary haze formation

Organic haze plays a key role in many planetary processes ranging from influencing the radiation budget of an atmosphere to serving as a source of prebiotic molecules on the surface. Numerous experiments have investigated the aerosols produced by exposing mixtures of N{sub 2}/CH{sub 4} to a variety of energy sources. However, many N{sub 2}/CH{sub 4} atmospheres in both our solar system and extrasolar planetary systems also contain carbon monoxide (CO). We have conducted a series of atmosphere simulation experiments to investigate the effect of CO on the formation and particle size of planetary haze analogues for a range of CO mixing ratios using two different energy sources, spark discharge and UV. We find that CO strongly affects both number density and particle size of the aerosols produced in our experiments and indicates that CO may play an important, previously unexplored, role in aerosol chemistry in planetary atmospheres.
Authors:
;  [1]
  1. Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO (United States)
Publication Date:
OSTI Identifier:
22348154
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 781; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; AEROSOLS; CARBON MONOXIDE; DENSITY; ENERGY SOURCES; METHANE; MIXING RATIO; MOLECULES; PARTICLE SIZE; PLANETARY ATMOSPHERES; PLANETS; SATELLITE ATMOSPHERES; SATELLITES; SIMULATION; SOLAR SYSTEM; SURFACES