NOTE: Three-Micrometer CH4 Line Emission from Titan's High-Altitude Atmosphere

Details NOTE: Three-Micrometer CH4 Line Emission from Titan's High-Altitude Atmosphere NOTE: Three-Micrometer CH4 Line Emission from Titan's High-Altitude Atmosphere

Oct 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000icar..147..588k&link_type=abstract

Icarus, Volume 147, Issue 2, pp. 588-591 (2000).

Astronomy and Astrophysics

Astrophysics

16

Scientific paper

We have detected 3-μm emission lines of the ν3 and ν3+ν4-ν4 bands of CH4 from Titan's high-altitude atmosphere using CGS4 on the United Kingdom Infrared Telescope. The intensity of the ν3+ν4-ν4 band is comparable to that of the ν3 fundamental band. Radiative transfer calculations show that the lower absorption coefficients of the ν3+ν4-ν4 transitions and the reduced rates of collisional deactivations of the ν3+ν4 level compared with those of the ν3-->0 band account for the relatively strong ν3+ν4-ν4 band intensity. The CH4 emissions form mainly in the altitude range 530-630 km, where temperatures are approximately 137-145 K, consistent with the low-temperature mesosphere proposed by R. V. Yelle (1991, Astrophys. J. 383, 380-400.).

Affiliated with

Also associated with

No associations

Rating

NOTE: Three-Micrometer CH4 Line Emission from Titan's High-Altitude Atmosphere 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 NOTE: Three-Micrometer CH4 Line Emission from Titan's High-Altitude Atmosphere, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and NOTE: Three-Micrometer CH4 Line Emission from Titan's High-Altitude Atmosphere will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-874792