Author/Authors :
Meadows، نويسنده , , Victoria S. and Orton، نويسنده , , Glenn and Line، نويسنده , , Michael and Liang، نويسنده , , Mao-Chang and Yung، نويسنده , , Yuk L. and Van Cleve، نويسنده , , Jeffrey and Burgdorf، نويسنده , , Martin J.، نويسنده ,
Abstract :
We present the first spectra of Neptune taken with the Spitzer Space Telescope, highlighting the high-sensitivity, moderate-resolution 10–20 μm (500–1000 cm−1) spectra. We report the discovery of methylacetylene (CH3C2H) and diacetylene (C4H2) with derived 0.1-mbar volume mixing ratios of ( 1.2 ± 0.1 ) × 10 −10 and ( 3 ± 1 ) × 10 −12 respectively.
Keywords :
Neptuneatmosphere , Spectroscopy , Infrared observations , Atmospherescomposition
