Water in planetary and cometary atmospheres: H2O/HDO transmittance and fluorescence models

摘要: We developed a modern methodology to retrieve water (H2O) and deuterated (HDO) in planetary cometary atmospheres, constructed an accurate spectral database that combines theoretical empirical results. On the basis of greatly expanded set spectroscopic parameters, we built full non-resonance cascade fluorescence model computed efficiencies for H2O (500 million lines) HDO (700 lines). The new line list was also integrated into advanced terrestrial radiative transfer code (LBLRTM) adapted CO2 rich atmosphere Mars, which adopted complex Robert–Bonamy formalism shapes. retrieved D/H atmospheres comet C/2007 W1 (Boattini), Earth by applying spectra obtained with high-resolution spectrograph NIRSPEC/Keck II atop Mauna Kea (Hawaii). accurately describes morphology bands increases accuracy abundances (and ratio water) respect previously available models. provides improved agreement predicted measured intensities many lines already identified comets, it identifies several unassigned emission as H2O. permits retrieval more rotational temperatures production rates water.