A dual origin for Neptune's carbon monoxide?

Emmanuel Lellouch (1, 2) , Raphaël Moreno (1, 2) , Gabriel Paubert (3)

1 LESIA - Laboratoire d'études spatiales et d'instrumentation en astrophysique
2 Pôle Planétologie du LESIA
3 IRAM - Instituto de Radio Astronomía Milimétrica

Heterodyne observations of Neptune have provided a measurement of the CO(2-1) line profile with a total bandpass of almost 8 GHz and a resolution of 4 MHz. The lineshape indicates that the CO mole fraction in Neptune's atmosphere is not uniform, but increases by a factor of ˜2 from the troposphere/lower stratosphere (0.5 ppm at p>20 mbar) to the upper stratosphere (1 ppm at p

Domaines: Astrophysique [astro-ph]

Emmanuel Lellouch, Raphaël Moreno, Gabriel Paubert. A dual origin for Neptune's carbon monoxide?. Astronomy and Astrophysics - A&A, 2005, 430, pp.L37-L40. ⟨10.1051/0004-6361:200400127⟩. ⟨hal-03742754⟩