Results 21 to 30 of about 312,846 (164)

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

The 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., Pauzat, F., Ellinger, Y., Ceccarelli, C.   +3 more
openaire   +2 more sources

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

The 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, Elettra L. Piacentino, Karin I. Öberg, Mahesh Rajappan   +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

The 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, Anthony J. Remijan, Robin T. Garrod, Giseon Baek, Martin Cordiner, Steven Charnley, Eric Herbst, Jeong-Eun Lee   +7 more
doaj   +1 more source

New Candidates for Organic-rich Regions on Ceres

The 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, J. M. Sunshine, R. T. Daly, A. Nathues, C. De Sanctis, A. Raponi, J. H. Pasckert, T. L. Farnham, J. Kloos, J. L. Ortiz   +9 more
doaj   +1 more source

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

The 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, Chaojiang Zhang, Joshua H. Marks, Ralf I. Kaiser   +3 more
doaj   +1 more source

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

The 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, Joshua H. Marks, Shiori Inada, Ralf I. Kaiser   +3 more
doaj   +1 more source

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

The 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, Vincent Chevrier, Olivier Grauby, Marie-Vanessa Coulet, Florence Chaspoul, John Carter   +5 more
doaj   +1 more source

Infrared Spectra of Organic and Salt-bearing Ices under Titan Conditions: Constraints on Detection of Ocean Materials

The Planetary Science Journal
Titan, with its organic-rich atmosphere and global subsurface ocean, has long been considered a prime candidate to potentially host life beyond Earth.
Paul V. Johnson, Robert Hodyss, Michael J. Malaska   +2 more
doaj   +1 more source

Non-thermal desorption of complex organic molecules [PDF]

Astronomy & Astrophysics, 2019
No abstract ...
Dartois, E., Chabot, M., Id Barkach, T., Rothard, H., Augé, B., Agnihotri, A. N., Domaracka, A., Boduch, P.   +7 more
openaire   +2 more sources

Formation Age of Ernutet Crater, Ceres, and Implications for Origin of the Organics

The Planetary Science Journal
Ceres is the largest body in the Main Asteroid Belt and has a unique composition characterized by products of aqueous alteration such as carbonates, ammoniated phyllosilicates, and organic materials in concentrated regions.
Michelle Kirchoff, Simone Marchi, Mallory Cochran   +2 more
doaj   +1 more source