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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

Complex organic molecules (COMs) are thought to be the precursors of pre-biotic molecules and are observed in many protostellar sources. For this paper we studied the formation of COMs during star formation and their evolution in the…

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 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 the process of 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. However, the physical and chemical conditions…

Astrophysics of Galaxies · Physics 2024-06-19 Laure Bouscasse , Timea Csengeri , Friedrich Wyrowski , K. M. Menten , S. Bontemps

We have studied four complex organic molecules (COMs), methyl formate ($CH_3OCHO$), dimethyl ether ($CH_3OCH_3$), formamide ($NH_2CHO$), and ethyl cyanide ($C_2H_5CN$), towards a large sample of 39 high-mass star-forming regions…

Astrophysics of Galaxies · Physics 2020-09-09 A. Coletta , F. Fontani , V. M. Rivilla , C. Mininni , L. Colzi , Á. Sánchez-Monge , M. T. Beltrán

Planetary systems such as our own are formed after a long process where matter condenses from diffuse clouds to stars, planets, asteroids, comets and residual dust, undergoing dramatic changes in physical and chemical state in less than a…

Solar and Stellar Astrophysics · Physics 2022-12-21 C. Ceccarelli , C. Codella , N. Balucani , D. Bockelée-Morvan , E. Herbst , C. Vastel , P. Caselli , C. Favre , B. Lefloch , K. Öberg

Molecular complexity builds up at each step of the Sun-like star formation process, starting from simple molecules and ending up in large polyatomic species. Complex organic molecules (COMs; such as methyl formate, HCOOCH$_3$, dymethyl…

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

(Abridged) The birth environment of the Sun will have influenced the conditions in the pre-solar nebula, including the attainable chemical complexity, important for prebiotic chemistry. The formation and distribution of complex organic…

Earth and Planetary Astrophysics · Physics 2014-06-04 Catherine Walsh , Eric Herbst , Hideko Nomura , T. J. Millar , Susanna Widicus Weaver

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…

(Abridged) Protoplanetary disks are vital objects in star and planet formation, possessing all the material which may form a planetary system orbiting the new star. We investigate the synthesis of complex organic molecules (COMs) in disks…

Earth and Planetary Astrophysics · Physics 2014-03-04 Catherine Walsh , T. J. Millar , Hideko Nomura , Eric Herbst , Susanna L. Widicus Weaver , Yuri Aikawa , Jake C. Laas , Anton I. Vasyunin

Determining the level of chemical complexity within dense starless and gravitationally bound prestellar cores is crucial for constructing chemical models, which subsequently constrain the initial chemical conditions of star formation. We…

Astrophysics of Galaxies · Physics 2021-04-28 Samantha Scibelli , Yancy Shirley , Anton Vasyunin , Ralf Launhardt

The detection of complex organic molecules (COMs) toward cold sources such as pre-stellar cores (with T<10 K), has challenged our understanding of the formation processes of COMs in the interstellar medium. Recent modelling on COM chemistry…

We present the results of chemical modeling of complex organic molecules (COMs) under conditions typical for prestellar cores. We utilize an advanced gas-grain astrochemical model with updated gas-phase chemistry, with a multilayer approach…

Astrophysics of Galaxies · Physics 2017-06-28 Anton I. Vasyunin , Paola Caselli , François Dulieu , Izaskun Jiménez-Serra

Quantifying the composition of the material in protoplanetary disks is paramount to determining the potential for exoplanetary systems to produce and support habitable environments. A key complex organic molecule (COM) to detect is methanol…

A new, more comprehensive model of gas-grain chemistry in hot molecular cores is presented, in which nondiffusive reaction processes on dust-grain surfaces and in ice mantles are implemented alongside traditional diffusive surface/bulk-ice…

Astrophysics of Galaxies · Physics 2022-02-23 Robin T. Garrod , Mihwa Jin , Kayla A. Matis , Dylan Jones , Eric R. Willis , Eric Herbst

We investigate the chemical evolution of complex organic molecules (COMs) in turbulent disks using gas-ice chemical reaction network simulations. We trace trajectories of dust particles considering advection, turbulent diffusion, gas drag,…

Earth and Planetary Astrophysics · Physics 2024-06-26 Taiki Suzuki , Kenji Furuya , Yuri Aikawa , Takashi Shibata , Liton Majumdar

A rich inventory of complex organic molecules (COMs) has been observed in high abundances in the gas phase toward Class 0 protostars. These molecules are suggested to be formed in ices and sublimate in the warm inner envelope close to the…

The complex organic molecules (COMs) detected in star-forming regions are the precursors of the prebiotic molecules that can lead to the emergence of life. By studying COMs in more evolved protoplanetary disks we can gain a better…

Earth and Planetary Astrophysics · Physics 2022-03-08 Nashanty G. C. Brunken , Alice S. Booth , Margot Leemker , Pooneh Nazari , Nienke van der Marel , Ewine F. van Dishoeck
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