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Abstract:

Collisional parameters of H2O with CO2 are currently missing from international spectroscopic databases, although they are essential for accurate modeling of water vapor in CO2-rich planetary atmospheres. In this study, high-resolution infrared spectra of H2O broadened by CO2 were recorded using a Fourier Transform Spectrometer in the 1.18 and 2.34 µm spectral regions. CO2-collisional parameters for selected H2O transitions were derived through a multispectrum fitting procedure employing both Voigt and quadratic speed-dependent Voigt profiles. Furthermore, calculations based on the semi-classical Complex Robert-Bonamy-Ma formalism were performed to estimate CO2-broadened half-widths, line shifts, and their temperature dependencies across various atmospheric transparency windows. It results in a strong agreement between theoretical predictions and experimental data. Finally, the shared calculated linelist, obtained for a wide range of transitions, can be directly applied to radiative transfer modeling of atmospheres primarily composed of carbon dioxide

Abstract:

The conditions of the surface of Venus are extremely harsh, and there is no naturally evolved life on Venus. E. coli is a bacteria with a number of subtypes and adaptations to varying environments. This paper covers a number of adaptations a theoretical colony of E. coli bacteria could evolve, based on pre-existing adaptations of E. coli to its natural environments