Results 21 to 30 of about 302,506 (166)

Thermal Desorption Kinetics, Binding Energies, and Entrapment of Methyl Mercaptan Ices

open access: yesThe Astrophysical Journal
Organosulfur species are potential major carriers of sulfur in the interstellar medium, as well as interesting ingredients in prebiotic chemistry. The most fundamental question regarding these species is under which conditions they reside in the gas ...
Suchitra Narayanan   +3 more
doaj   +1 more source

The Robust Detection and Spatial Distribution of Acetaldehyde in Orion KL: Atacama Large Millimeter/submillimeter Array Observations and Chemical Modeling

open access: yesThe Astrophysical Journal
Despite the organic molecule inventory detected in the Orion Kleinmann–Low Nebula (Orion KL), acetaldehyde (CH _3 CHO)—one of the most ubiquitous interstellar aldehydes—has not been firmly identified with millimeter-wave interferometry.
Miwha Jin   +7 more
doaj   +1 more source

New Candidates for Organic-rich Regions on Ceres

open access: yesThe Planetary Science Journal
We explore the spatial distribution of organics on Ceres using the visible and near-infrared data collected by the Dawn mission. We employ a spectral mixture analysis (SMA) approach to map organic materials within the Ernutet crater at the highest ...
J. L. Rizos   +9 more
doaj   +1 more source

Complex Organic Molecules toward Embedded Low-mass Protostars [PDF]

open access: yesThe Astrophysical Journal, 2017
Abstract Complex organic molecules (COMs) have been observed toward several low-mass young stellar objects (LYSOs). Small and heterogeneous samples have so far precluded conclusions on typical COM abundances, as well as the origin(s) of abundance variations between sources.
Jennifer B. Bergner   +3 more
openaire   +3 more sources

Interstellar Complex Organic Molecules in SiO-traced Massive Outflows

open access: yesThe Astrophysical Journal Supplement Series, 2022
Abstract The interstellar medium contains dust and gas, in which molecules can proliferate at high densities and in cold conditions. Interstellar complex organic molecules (iCOMs) are C-bearing species that contain at least six atoms.
O. S. Rojas-García   +5 more
openaire   +2 more sources

Formation of All Three C2H4O Isomers—Ethylene Oxide (c-C2H4O), Acetaldehyde (CH3CHO), and Vinyl Alcohol (CH2CHOH)—in Ethanol-containing Interstellar Analog Ices

open access: yesThe Astrophysical Journal
Oxygen-containing complex organic molecules are key precursors to biorelevant compounds fundamental for the origins of life. However, the untangling of their interstellar formation mechanisms has just scratched the surface, especially for oxygen ...
Jia Wang   +3 more
doaj   +1 more source

Chemical Evolution of Some Selected Complex Organic Molecules in Low-mass Star-forming Regions

open access: yesThe Astrophysical Journal, 2023
The destiny of complex organic molecules (COMs) in star-forming regions is interlinked with various evolutionary phases. Therefore, identifying these species in diversified environments of identical star-forming regions would help to understand their ...
Bratati Bhat   +8 more
doaj   +1 more source

Bottom-up Formation of Phenol (C6H5OH) in Interstellar Analog Ices of Acetylene and Water Exposed to Ionizing Radiation

open access: yesThe Astrophysical Journal
Although oxygenated benzene derivatives are key precursors in the abiotic synthesis of biorelevant molecules and fundamental building blocks of functionalized polycyclic aromatic hydrocarbons, their formation mechanisms under interstellar conditions have
Jia Wang   +3 more
doaj   +1 more source

INTERSTELLAR COMPLEX ORGANIC MOLECULES AND THE MINIMUM ENERGY PRINCIPLE [PDF]

open access: yesThe Astrophysical Journal, 2009
The hunt for complex organic molecules (COMs) is a major concern for understanding the possible role of interstellar chemistry in the synthesis of the molecules that ultimately may be at the origin of life. A comprehensive screening of the 14 species effectively observed under 32 different isomeric forms in the interstellar medium has been done by ...
Lattelais, M.   +3 more
openaire   +2 more sources

Exploring Organic-mineral Evolution in Planetary Analogs: Insights from Hydrothermal Alteration of Aromatic Molecules and Mafic Minerals

open access: yesThe Planetary Science Journal
Organic-mineral interactions are crucial drivers of diversity in abiotic systems on planetary surfaces. Despite their significance, the evolution of these systems, particularly the role of organic molecules in newly formed minerals, remains underexplored.
Vassilissa Vinogradoff   +5 more
doaj   +1 more source

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