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The hunt for frozen organic molecules in space: a laboratory approach
Gomes
Rachid,
M
.
2023
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Título:
The hunt for frozen organic molecules in space: a laboratory approach
Autor:
Gomes
Rachid,
M
.
Assuntos:
Astrochemistry
;
Carbon monoxide ice
;
Complex Organic Molecules
;
Fullerenes
;
Infrared spectroscopy
;
Interstellar ice
;
James Webb Space Telescope
;
Laser interference
;
Solid state astrochemistry
Descrição:
Complex Organic Molecules (COMs) have been detected in objects across different stages of stellar evolution. Many of these COMs are expected to form on interstellar ice and transfer later to the gas phase. However, due to the challenge of detecting and assigning molecules in interstellar ice observations, the only frozen COM that has been unambiguously identified is methanol. This scenario is about to change, as the exceptional capabilities of the James Webb Space Telescope (JWST) enable the observation of weak signatures of molecules in interstellar ice.This thesis has a main focus on laboratory studies to support interstellar ice observation with the JWST. The results of the spectroscopic characterization of three COMs, acetone, methylamine, and methyl cyanide mixed in interstellar ice analogs are presented in Chapters 3, 4, and 5, respectively. The potential of their absorption features to trace these species in JWST observations is also discussed. Chapter 6 presents a new experimental approach to studying morphological changes in frozen CO, which is important to understand its morphology in space. Chapter 7 presents a computational study that simulates the infrared spectra of small fullerenes (between 44-70 C atoms) and provides insights for future JWST searches for these molecules
Data de criação/publicação:
2023
Idioma:
Inglês
Links
View record in Leiden University Repository$$FView record in $$GLeiden University Repository
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