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G351.16+0.70 is a relatively well-studied High Mass Star Forming Region with at least two main bipolar outflow structures originating from an OB embedded star and multiple IR cores. Using high-resolution and large bandwidth SMA…

Astrophysics of Galaxies · Physics 2023-03-07 O. S. Rojas-García , A. I. Gómez-Ruiz , A. Palau , M. T. Orozco-Aguilera , S. E. Kurtz , M. Chavez Dagostino

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…

Interstellar complex organic molecules (iCOMs) may have a link to prebiotic species, key building blocks for life. In Galactic star-forming (SF) regions, spatial variations of iCOMs emission could reflect the source physical structure or…

We present the first census of the interstellar Complex Organic Molecules (iCOMs) in the low-mass Class I protostar SVS13-A, obtained by analysing data from the IRAM-30m Large Project ASAI (Astrochemical Surveys At IRAM). They consist of an…

iCOMs are species commonly found in the interstellar medium. They are believed to be crucial seed species for the build-up of chemical complexity in star forming regions as well as our own Solar System. Thus, understanding how their…

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

We report on subarcsecond observations of complex organic molecules (COMs) in the high-mass protostar IRAS20126+4104 with the Plateau de Bure Interferometer in its most extended configurations. In addition to the simple molecules SO, HNCO…

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…

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

The high abundances of Complex Organic Molecules (COMs) with respect to methanol, the most abundant COM, detected towards low-mass protostars, tend to be underpredicted by astrochemical models. This discrepancy might come from the large…

Solar and Stellar Astrophysics · Physics 2015-05-20 Vianney Taquet , Ana López-Sepulcre , Cecilia Ceccarelli , Roberto Neri , Claudine Kahane , Steven B. Charnley

Aims: A unique environment to study how interstellar Complex Organic Molecules (iCOMs) can be formed is the shocked gas along low-mass protostellar outflows, as the dust mantles composition is sputtered into the gas phase. The chemical…

Complex organic molecules (COMs) are known to be abundant toward some low-mass young stellar objects (YSOs), but how these detections relate to typical COM abundance are not yet understood. We aim to constrain the frequency distribution of…

Astrophysics of Galaxies · Physics 2015-06-19 Karin I. Oberg , Trish Lauck , Dawn Graninger

Complex organic molecules (COMs) have been observed towards 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…

Solar and Stellar Astrophysics · Physics 2017-06-21 Jennifer B. Bergner , Karin I. Öberg , Robin T. Garrod , Dawn M. Graninger

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…

(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

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…

Interstellar complex organic molecules (iCOMs) can be loosely defined as chemical compounds with at least six atoms in which at least one is carbon. The observations of iCOMs in star-forming regions have shown that they contain an important…

Solar and Stellar Astrophysics · Physics 2019-09-30 Joan Enrique-Romero , Albert Rimola , Cecilia Ceccarelli , Piero Ugliengo , Nadia Balucani , Dimitrios Skouteris

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

We investigate the presence of COMs in strongly UV-irradiated interstellar molecular gas. We have carried out a complete millimetre line survey using the IRAM30m telescope towards the edge of the Orion Bar photodissociation region (PDR),…

Astrophysics of Galaxies · Physics 2017-07-26 S. Cuadrado , J. R. Goicoechea , J. Cernicharo , A. Fuente , J. Pety , B. Tercero

Infrared Dark Clouds are expected to harbor sources in different, very young evolutionary stages. To better characterize these differences, we observed a sample of 43 massive Infrared Dark Clouds, originally selected as candidate high-mass…

Astrophysics · Physics 2019-08-19 H. Beuther , T. K. Sridharan
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