Navegação por Assunto "Astrochemistry"
Resultados 1-5 de 5
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Destruction and multiple ionization of PAHs by X-rays in circumnuclear regions of AGNs
(2019) [Artigo de periódico]The infrared signatures of polycyclic aromatic hydrocarbons (PAHs) are observed in a variety of astrophysical objects, including the circumnuclear medium of active galactic nuclei (AGNs). These are sources of highly energetic ... -
Estudo sobre a ocorrência natural de fluidos supercríticos no Planeta Vênus
(2021) [Trabalho de conclusão de graduação]Este trabalho teve como objetivo estimar a altitude máxima de ocorrência natural do fluido supercrítico da mistura atmosférica do planeta Vênus, composta por 96,5% CO2 e 3,5% N2. Para isso, foram realizadas estimativas a ... -
Molecular chemistry and the missing mass problem in planetary nebulae
(2012) [Artigo de periódico]Context. Detections of molecular lines, mainly from H₂ and CO, reveal molecular material in planetary nebulae. Observations of a variety of molecules suggest that the molecular composition in these objects differs from ... -
Profile comparison of the 6–9 μm polycyclic aromatic hydrocarbon bands in starburst-dominated galaxies
(2021) [Artigo de periódico]Polycyclic aromatic hydrocarbons (PAHs) are of great astrochemical and astrobiological interest due to their potential to form prebiotic molecules. We analyse the 7.7 and 8.6 μm PAH bands in 126 pre-dominantly starburst-dominated ... -
Variations in the 6.2 μm emission profile in starburst-dominated galaxies : a signature of polycyclic aromatic nitrogen heterocycles (PANHs)?
(2018) [Artigo de periódico]Analyses of the polycyclic aromatic hydrocarbon (PAH) feature profiles, especially the 6.2 μm feature, could indicate the presence of nitrogen incorporated in their aromatic rings. In thiswork, 155 predominantly ...