Results 11 to 20 of about 8,526 (198)
Fire from Ice - Massive Star Birth from Infrared Dark Clouds [PDF]
, 2017 I review massive star formation in our Galaxy, focusing on initial conditions in Infrared Dark Clouds (IRDCs), including the search for massive pre-stellar cores (PSCs), and modeling of later stages of massive protostars, i.e., hot molecular cores (HMCs).
Tan, Jonathan C.
arxiv +3 more sources
Computational challenges in Astrochemistry [PDF]
WIREs Computational Molecular Science, 2017 Cosmic evolution is the tale of progressive transition from simplicity to complexity. The newborn universe starts with the simplest atoms formed after the Big Bang and proceeds toward ‘astronomical complex organic molecules’ (astroCOMs). Understanding the chemical evolution of the universe is one of the main aims of Astrochemistry, with the starting ...
Małgorzata Biczysko +2 more
openalex +5 more sources
Chemical Reactions in Astrochemistry [PDF]
Symposium - International Astronomical Union, 1992 This paper is devoted to chemistry in the gas phase dealing firstly with ion-molecule reactions at extremely low temperature. The experimental techniques that have been used in this field are shortly presented and the reactions that have been studied using the CRESU(S) method reviewed.
B. R. Rowe
openalex +3 more sources
Reaction Kinetics in a Tight Spot [PDF]
Small 5 (2005) 502, 2005 The standard analysis of reaction networks based on deterministic rate equations fails in confined geometries, commonly encountered in fields such as astrochemistry, thin film growth and cell biology. In these systems the small reactant population implies anomalous behavior of reaction rates, which can be accounted for only by following the full ...
Bartholomay +16 more
arxiv +3 more sources
Astrochemistry During the Formation of Stars [PDF]
Annual Review of Astronomy and Astrophysics, 2020 Star-forming regions show a rich and varied chemistry, including the presence of complex organic molecules—in both the cold gas distributed on large scales and the hot regions close to young stars where protoplanetary disks arise. Recent advances in observational techniques have opened new possibilities for studying this chemistry.
Robin T Garrod, Jes K Jørgensen
exaly +6 more sources
Astrochemistry and Astrophotonics for an Antarctic Observatory [PDF]
EAS Publications Series, 2009 Due to its location and climate, Antarctica offers unique conditions for long-period observations across a broad wavelength regime, where important diagnostic lines for molecules and ions can be found, that are essential to understand the chemical ...
A. Kelz +17 more
core +3 more sources
Kinetic database for astrochemistry [PDF]
EAS Publications Series, 2012 KIDA (for KInetic Database for Astrochemistry) is a project initiated by different communities in order to 1) improve the interaction between astrochemists and physico-chemists and 2) simplify the work of modeling the chemistry of astrophysical environments.
Valentine Wakelam, Tae Team
openalex +3 more sources
A statistical and machine learning approach to the study of astrochemistry [PDF]
arXiv, 2023 In order to obtain a good understanding of astrochemistry, it is crucial to better understand the key parameters that govern grain-surface chemistry. For many chemical networks, these crucial parameters are the binding energies of the species. However, there exists much disagreement regarding these values in the literature.
Johannes Heyl, S. Viti, Gijs Vermariën
arxiv +3 more sources
Astrochemistry of dimethyl ether [PDF]
Astronomy & Astrophysics, 2005 Dimethyl ether (DME, CH 3 OCH 3 ) is one of the largest organic molecules detected in the interstellar gas and shows high abundances in star-forming regions, known as hot molecular cores. The observed DME might be formed on grains or by secondary gas phase reactions from a precursor molecule, which in turn was sublimed into the gas phase from the grain
Z. Peeters +6 more
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Molecular Data Needs in Astrochemistry [PDF]
Symposium - International Astronomical Union, 2000 The development of astrochemistry is inextricably linked to the generation of fundamental data. In this report, we discuss data needs in terms of astrochemical models, gas-phase kinetics, molecular excitation, optical and UV spectroscopy, solid-state chemistry, and millimeter and submillimeter wave spectroscopy.
T. J. Millar +5 more
openalex +4 more sources