Microwave Observations of Neptune

Details Microwave Observations of Neptune Microwave Observations of Neptune

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009dps....41.6809h&link_type=abstract

American Astronomical Society, DPS meeting #41, #68.09

Astronomy and Astrophysics

Astronomy

Scientific paper

Images of Neptune in the microwave are used to study the troposphere of this dynamic planet. Previous 3.6, 2.0, and 1.3 cm VLA images have shown that Neptune's atmosphere has large mid-latitude dim regions and a bright pole (Hofstadter et al. 2008, Shuleen et al. 2006). The dim regions indicate convective activity and the bright pole indicates a decreased amount of opacity from absorbers. In the highly convective regions absorbers (NH3, H2S, and H2O) are being brought up from below in the planet and the decreased opacity in the southern polar region indicates an area of subsidence.
In January 2009 new high-spatial resolution VLA images of Neptune were obtained at 3.6 and 1.3 cm. These images will be used along with previous VLA images at 1.3 and 2.0 cm (from 2006) and 3.6 cm (from 1991) to examine the tropospheric features of Neptune's atmosphere.
This work is currently supported by the National Radio Astronomy Observatory. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Incorporated.
References:
Hofstadter et al., 2008. BAAS, 40, 488.
Shuleen et al., 2006. BAAS, 38, 502.

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