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Complex organic molecules (COMs) are thought to form on icy dust grains in the earliest phase of star formation. The evolution of these COMs from the youngest Class 0/I protostellar phases toward the more evolved Class II phase is still not…

During star formation, the dense gas undergoes significant chemical evolution leading to the emergence of a rich variety of molecules associated with hot cores and hot corinos. The physical and chemical conditions are poorly constrained;…

Astrophysics of Galaxies · Physics 2022-06-08 L. Bouscasse , T. Csengeri , A. Belloche , F. Wyrowski , S. Bontemps , R. Güsten , K. M. Menten

Classical hot cores are rich in molecular emission, and they show a high abundance of complex organic molecules (COMs). The emergence of molecular complexity is poorly constrained in the early evolution of hot cores. Using the Atacama Large…

Astrophysics of Galaxies · Physics 2019-11-27 T. Csengeri , A. Belloche , S. Bontemps , F. Wyrowski , K. M. Menten , L. Bouscasse

Recent astrochemical models and experiments have explained that complex organic molecules (COMs; molecules composed of six or more atoms) are produced on the dust grain mantles in cold and dense gas in prestellar cores. However, the…

Astrophysics of Galaxies · Physics 2022-11-16 Giseon Baek , Jeong-Eun Lee , Tomoya Hirota , Kee-Tae Kim , Mi Kyoung Kim

Thanks to the advent of sensitive and broad bandwidth instrumentation, complex organic molecules (COMs) have been found in a wide variety of interstellar environments, not only in our Galaxy but also in external galaxies up to a redshift of…

Astrophysics of Galaxies · Physics 2025-03-24 Izaskun Jimenez-Serra , Claudio Codella , Arnaud Belloche

The presence of complex organic molecules (COMs) in the interstellar medium (ISM) is of great interest since it may link to the origin and prevalence of life in the universe. Aiming to investigate the occurrence of COMs and their possible…

Complex organic molecules (COMs) have been detected in a few Class 0 protostars but their origin is not well understood. Going beyond studies of individual objects, we want to investigate the origin of COMs in young protostars on a…

During massive star formation, dense gas undergoes chemical evolution, producing both simple and complex organic molecules (COMs) characteristic of hot molecular cores. How this evolution depends on protostellar physical properties remains…

Astrophysics of Galaxies · Physics 2025-10-31 D. Gigli , P. Gorai , C. Y. Law , J. C. Tan , M. Bonfand , T. Rahman , Y. Zhang , K. Taniguchi , R. Fedriani , Z. Telkamp , V. Rosero , G. Cosentino

The detection of complex organic molecules (COMs) toward dense, collapsing prestellar cores has sparked interest in the fields of astrochemistry and astrobiology, yet the mechanisms for COM formation are still debated. It was originally…

Astrophysics of Galaxies · Physics 2023-04-05 Samantha Scibelli , Yancy Shirley

Hot molecular cores (HMCs), the cradles of massive stars, are the most chemically rich sources in the Galaxy. The typical masses of these cores (few hundreds of solar masses) make them the most important reservoirs of complex organic…

Solar and Stellar Astrophysics · Physics 2018-06-22 Maria T. Beltrán , Víctor M. Rivilla

Massive star-forming regions exhibit an extremely rich and diverse chemistry, which in principle provides a wealth of molecular probes, as well as laboratories for interstellar prebiotic chemistry. Since the chemical structure of these…

Cold ($\sim$10 K) and dense ($\sim$10$^{5}$ cm$^{-3}$) cores of gas and dust within molecular clouds, known as starless and dynamically evolved prestellar cores, are the birthplaces of low-mass ($M$ $\leq$ few M$_\odot$) stars. As…

Astrophysics of Galaxies · Physics 2024-08-22 Samantha Scibelli , Yancy Shirley , Andrés Megías , Izaskun Jiménez-Serra

Complex Organic Molecules (COMs) are considered crucial molecules, since they are connected with organic chemistry, at the basis of the terrestrial life. More pragmatically, they are molecules in principle difficult to synthetize in the…

Solar and Stellar Astrophysics · Physics 2015-06-22 Ali A. Jaber , C. Ceccarelli , C. Kahane , E. Caux

Complex organic molecules (COMs) are widely detected in protostellar and protoplanetary systems, where they are thought to have been inherited in large part from earlier evolutionary phases. The chemistry of COMs in these earlier phases,…

Astrophysics of Galaxies · Physics 2025-01-31 F. D. Priestley , P. C. Clark , S. E. Ragan , S. Scibelli , M. T. Cusack , S. C. O. Glover , O. Fehér , L. R. Prole , R. S. Klessen

Complex organic molecules (COMs) have been detected abundantly at various stages of star formation, particularly in the warm protostellar phase. The progress in gas-phase measurements has been accelerated by the advent of the Atacama Large…

Astrophysics of Galaxies · Physics 2025-10-20 P. Nazari

Hot molecular cores (HMCs) are intermediate stages of high-mass star formation and are also known for their rich emission line spectra at (sub-)mm wavebands. The observed spectral feature of HMCs such as total number of emission lines and…

(Abridged) Complex organic molecules (COMs) are commonly detected in and near star-forming regions. However, the dominant process in the release of these COMs from the icy grains - where they predominately form - to the gas phase is still…

Solar and Stellar Astrophysics · Physics 2021-11-24 S. J. van der Walt , L. E. Kristensen , J. K. Jørgensen , H. Calcutt , S. Manigand , M. el Akel , R. T. Garrod , K. Qiu

The interstellar medium contains dust and gas, in which at high densities and cold conditions molecules can proliferate. Interstellar Complex Organic Molecules (iCOMs) are C-bearing species that contain at least six atoms. As they are…

Astrophysics of Galaxies · Physics 2022-08-31 O. S. Rojas-García , A. I. Gómez-Ruiz , A. Palau , M. T. Orozco-Aguilera , M. Chavez Dagostino , S. E. Kurtz

Hot corinos are of great interest due to their richness in interstellar complex organic molecules (COMs) and the consequent potential prebiotic connection to solar-like planetary systems. Recent surveys have reported an increasing number of…

Massive young stellar objects (MYSOs) with hot cores are classic sources of complex organic molecules. The origins of these molecules in such sources, as well as the small- and large-scale differentiation between nitrogen- and…

Solar and Stellar Astrophysics · Physics 2015-03-25 Edith C. Fayolle , Karin I. Öberg , Robin T. Garrod , Ewine F. van Dishoeck , Suzanne E. Bisschop
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