Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006dps....38.6010s&link_type=abstract
American Astronomical Society, DPS meeting #38, #60.10; Bulletin of the American Astronomical Society, Vol. 38, p.599
Astronomy and Astrophysics
Astronomy
Scientific paper
The O2 singlet delta emission at 1.27 microns was measured and can be used as an indicator of ozone above 20 km. The data were taken on Jan. 16, 2006 from 4:10 to 6:50 UT (Ls = 357.3 degrees)). The diameter of Mars was 10.4 arc-sec; during this time, sub-earth longitude was 300-340 W and sub-earth latitude was 17.7 S; relative velocity was +16.0 km/sec. The data were collected using CSHELL at the NASA Infrared Telescope Facility. The slit was positioned in north-south direction on Mars. Spectra were taken at 1.0 arc-sec (600 km (nadir)) increments East to West across Mars. From the data, a 2-dimensional map of the O2 single-delta emissions was obtained. Large emissions ( >12; MRayleighs) were observed in the polar regions. No detectible emissions (< 0.2 MRayleighs) were observed at low latitudes. These observations will be compared to our previous observations at different times in the Martian year (Ls =333, 133, and 155 degrees).
We acknowledge NSF-RUI AST Grant # AST-0505765 and the administrators and staff of NASA-IRTF.
Mumma Michael J.
Novak Robert E.
Rahon Cara L.
Sanstead Caitlin C.
Varona M. M.
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