| Name | NEP_HYDR |
| Title | SEARCH FOR METHYL RADICAL ON NEPTUNE AND SATURN |
| URL | |
| DOI | https://doi.org/10.5270/esa-koj57uy |
| Author | BEZARD, BRUNO G |
| Description | ===================================================================== ==> in this proposal, more time is being requested for bbezard.nep_2 ===================================================================== we first propose to search for methyl radical (ch3) on neptune using the grating mode of the sws. this observation is a follow-up of the accepted proposal nep_2 in which we originally proposed to search for various hydrocarbons on neptune. the ch3 observations had to be removed to fit within the allocated time. we also propose to extend this search to saturn using the f-p mode of the sws. photochemistry of methane in the atmospheres of the giant planets leads to the formation of various hydrocarbons. methyl radical is supposedly the key pathway to the formation of ethane, the most abundant photochemically-produced molecule. detecting this compound would provide an important test for some chemical schemes proposed in photochemical models and would help determining some poorly constrained atmospheric parameters such as the eddy mixing profile. |
| Instrument | SWS02 , SWS07 |
| Temporal Coverage | 1997-05-01T18:30:18Z/1997-12-14T16:41:11Z |
| Version | 1.0 |
| Mission Description | The Infrared Space Observatory (ISO) was the worlds first true orbiting infrared observatory. Equipped with four highly-sophisticated and versatile scientific instruments, it was launched by Ariane in November 1995 and provided astronomers world-wide with a facility of unprecedented sensitivity and capabilities for a detailed exploration of the Universe at infrared wavelengths. |
| Creator Contact | https://support.cosmos.esa.int/iso/ |
| Date Published | 1999-01-08T00:00:00Z |
| Last Update | 2026-03-02 |
| Keywords | Infrared Space Observatory data, ESA ISO mission dataset, ISO infrared observations, mid-infrared astronomy data, far-infrared spectroscopy dataset, ISOCAM imaging data, ISOPHOT photometry data, SWS short wavelength spectrometer data, LWS long wavelength spectrometer data, infrared spectral line observations, infrared imaging survey data, dust emission infrared observations, star formation infrared dataset, interstellar medium spectroscopy data, polycyclic aromatic hydrocarbons PAH features data, active galactic nuclei infrared observations, circumstellar envelope infrared data, planetary nebula infrared spectroscopy, extragalactic infrared survey data, calibrated ISO data products, FITS files infrared astronomy, spectral energy distribution infrared data, continuum photometry dataset, infrared spectral cubes, flux-calibrated infrared maps, ESA ISO Data Archive, legacy infrared space mission dataset |
| Publisher And Registrant | European Space Agency |
| Credit Guidelines | European Space Agency, BEZARD et al., 1999, 'SEARCH FOR METHYL RADICAL ON NEPTUNE AND SATURN', 1.0, European Space Agency, https://doi.org/10.5270/esa-koj57uy |