The detection of HCN on Jupiter |
| |
| Authors: | AT Tokunaga SC Beck TR Geballe JH Lacy E Serabyn |
| |
| Institution: | Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, Hawaii 96822, USA;Department of Physics, University of California, Berkeley, California 94720, USA;Mt. Wilson and Las Campanas Observatory, 813 Santa Barbara St., Pasadena, California 91101 USA;Department of Physics, California Institute of Technology, Pasadena, California 91125, USA;Department of Physics, University of California, Berkeley, California 94720, USA |
| |
| Abstract: | We report the detection of HCN on Jupiter. Three R-branch lines of the ν2 fundamental of HCN near 13.5 μm were observed in absorption, from which the HCN column density is inferred to be 5 × 10?3 cm-am with an uncertainty of a factor of 2. If emission from the stratosphere exists, then the derived column density is only a lowe limit. We suggest that the Jovian HCN most likely originates from the photolysis of CH4 and NH3 in the lower stratosphere and upper troposphere. In addition, an upper limit of 2.5 × 10?2 cm-am was established for the column density of HCN on Saturn. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
