Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008apj...681l.101n&link_type=abstract
The Astrophysical Journal, Volume 681, Issue 2, pp. L101-L103.
Astronomy and Astrophysics
Astronomy
12
Infrared: Solar System, Planets And Satellites: Formation, Planets And Satellites: Individual: Titan, Radiative Transfer
Scientific paper
This Letter reports on a search for infrared emissions of isotopologues of CO2 in the atmosphere of Titan using spectral data recorded by the Cassini Composite Infrared Spectrometer (CIRS). We have made a successful 6.5 σ detection of 13CO2 at a fraction CO2/13CO2 = 84 +/- 17, consistent with measurements of 12C/13C in other species, and also the terrestrial value (89). We also find a probable 3.5 σ detection of C16O18O at a fraction CO2/C 16O18O = 173 +/- 55, slightly lower than the terrestrial value (253) and consistent with the twofold enhancement in 18O reported previously in CO, or with an intermediate value as suggested by chemistry. These isotopic ratios provide important constraints on models of the formation, evolution, and current processes in Titan's atmosphere.
Achterberg Richard K.
Bezard Bruno
Coustenis Athena
Flasar Michael F.
Hewagama Tilak
No associations
LandOfFree
Isotopic Ratios in Titan's Atmosphere from Cassini CIRS Limb Sounding: CO2 at Low and Midlatitudes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Isotopic Ratios in Titan's Atmosphere from Cassini CIRS Limb Sounding: CO2 at Low and Midlatitudes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Isotopic Ratios in Titan's Atmosphere from Cassini CIRS Limb Sounding: CO2 at Low and Midlatitudes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1138307