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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 the gas-phase in cold and lightless molecular cores. Recent solid-state laboratory experiments have provided strong evidence that COMs can be formed on icy grains through…

Solar and Stellar Astrophysics · Physics 2020-10-21 D. Qasim , G. Fedoseev , K. -J. Chuang , V. Taquet , T. Lamberts , J. He , S. Ioppolo , E. F. van Dishoeck , H. Linnartz

Here we review some of the major findings of the mass spectrometer suite ROSINA on board of ESA's Rosetta spacecraft to comet 67P/Churyumov-Gerasimenko. For more than 2 years, ROSINA continuously measured the composition of the gases…

Earth and Planetary Astrophysics · Physics 2023-09-15 Martin Rubin

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…

Isolated dense molecular cores are investigated to study the onset of complex organic molecule formation in interstellar ice. Sampling three cores with ongoing formation of low-mass stars (B59, B335, and L483) and one starless core (L694-2)…

Astrophysics of Galaxies · Physics 2020-12-02 Laurie E. U. Chu , Klaus W. Hodapp , A. C. Adwin Boogert

Context. Near- and mid-infrared observations have revealed the presence of organic refractory materials in the solar system, in cometary nuclei and on the surface of centaurs, Kuiper-belt and trans-neptunian objects. In these astrophysical…

HH 212 is one of the well-studied protostellar systems, showing the first vertically resolved disk with a warm atmosphere around the central protostar. Here we report a detection of 9 organic molecules (including newly detected ketene,…

Astrophysics of Galaxies · Physics 2019-05-15 Chin-Fei Lee , Claudio Codella , Zhi-Yun Li , Sheng-Yuan Liu

It is important to understand the origin of molecular line intensities and chemical composition in the molecular-cloud scale in the Galactic sources because it serves as a benchmark to compare with the chemical compositions of extragalactic…

Astrophysics of Galaxies · Physics 2019-02-13 Nanase Harada , Yuri Nishimura , Yoshimasa Watanabe , Satoshi Yamamoto , Yuri Aikawa , Nami Sakai , Takashi Shimonishi

Comets are considered as the most primitive objects in the Solar System. Their composition provides information on the composition of the primitive solar nebula, 4.6 Gyr ago. The radio domain is a privileged tool to study the composition of…

Earth and Planetary Astrophysics · Physics 2016-10-12 Jacques Crovisier , Dominique Bockelée-Morvan , Pierre Colom , Nicolas Biver

Interstellar formamide (NH2CHO) has recently attracted significant attention due to its potential role as a molecular building block in the formation of precursor biomolecules relevant for the origin of life. Its formation, whether on the…

Earth and Planetary Astrophysics · Physics 2018-10-09 Albert Rimola , Dimitrios Skouteris , Nadia Balucani , Cecilia Ceccarelli , Joan Enrique-Romero , Vianney Taquet , Piero Ugliengo

The formation of complex organic molecules (COMs) in protostellar environments is a hotly debated topic. In particular, the relative importance of the gas phase processes as compared to a direct formation of COMs on the dust grain surfaces…

Earth and Planetary Astrophysics · Physics 2015-06-23 C. Codella , F. Fontani , C. Ceccarelli , L. Podio , S. Viti , R. Bachiller , M. Benedettini , B. Lefloch

Protostellar cores located near supernova remnants are considered potential analogues of the birth environment of the solar system. However, the extent to which supernovae influence their chemical evolution remains unclear. We report the…

Astrophysics of Galaxies · Physics 2026-05-14 Takashi Shimonishi , Hidetoshi Sano , Kenji Furuya , Yoko Oya

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…

We report high-sensitivity millimetre observations of several molecular species (13CO, HCN, HNC, CN, HCO+ and N2H+) in a sample of compact planetary nebulae. Some species such as HCO+ and CN are particularly abundant compared to envelopes…

Astrophysics · Physics 2009-11-07 E. Josselin , R. Bachiller

Observations of low-mass protostellar systems show evidence of rich complex organic chemistry. Their low luminosity, however, makes determining abundance distributions of complex organic molecules (COMs) within the water snowline…

Earth and Planetary Astrophysics · Physics 2024-08-02 Levi G. Walls , Merel L. R. van 't Hoff , Edwin A. Bergin

Deriving properties of cometary nuclei from coma data is of significant importance for our understanding of cometary activity and has implications beyond. Ground-based data represent the bulk of measurements available for comets. Yet, to…

Earth and Planetary Astrophysics · Physics 2023-08-14 Raphael Marschall , Björn J. R. Davidsson , Martin Rubin , Valeriy Tenishev

Hundreds of high-velocity atomic gas clouds exist above and below the Galactic Centre, with some containing a molecular component. However, the origin of these clouds in the Milky Way's wind is unclear. This paper presents new…

The release of volatiles from comets is usually from direct sublimation of ices on the nucleus, but for very or hyper-active comets other sources have to be considered to account for the total production rates. In this work, we present new…

Earth and Planetary Astrophysics · Physics 2023-04-13 Theodore Kareta , John W. Noonan , Walter M. Harris , Alessondra Springmann

Amide molecules produced in space could play a key role in the formation of biomolecules on a young planetary object. However, the formation and chemical network of amide molecules in space is not well understood. In this work, ALMA…

Protoplanetary disks around luminous young A-type stars are prime observational laboratories to determine the abundances of complex organic molecules (COMs) present during planet formation. In contrast to their lower stellar mass…

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