Results 91 to 100 of about 9,417 (235)

Can We Draw Conclusions on Supernova Shock Wave Propagation Using Short‐Lived Radioactive Isotopes?

open access: yesAstronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.
ABSTRACT We run a three‐dimensional Galactic chemical evolution (GCE) model to follow the propagation of 53Mn (exclusively produced from type Ia supernovae, SNIa), 60Fe (exclusively produced from core‐collapse supernovae, CCSNe), 182Hf (exclusively produced from intermediate mass stars, IMSs), and 244Pu (exclusively produced from neutron star mergers ...
Benjamin Wehmeyer   +5 more
wiley   +1 more source

New theoretical method for calculating the radiative association cross section of a triatomic molecule: Application to N2-H-

open access: yes, 2013
We present a new theoretical method to treat the atom diatom radiative association within a time independent approach. This method is an adaptation of the driven equations method developed for photodissociation.
Hochlaf, M., Lique, F., Stoecklin, T.
core   +5 more sources

The Effect of an Inert Solid Reservoir on Molecular Abundances in Dense Interstellar Clouds

open access: yesOpen Astronomy, 2012
The question, what is the role of freeze-out of chemical species in determining the molecular abundances in the interstellar gas is a matter of debate.
Kalvāns Juris, Shmeld Ivar
doaj   +1 more source

The origin of complex organic molecules in prestellar cores

open access: yes, 2014
Complex organic molecules (COMs) have been detected in a variety of environments, including cold prestellar cores. Given the low temperature of these objects, these last detections challenge existing models.
Bachiller, Raphael   +3 more
core   +3 more sources

Clouds, Clumps, Cores & Comets - a Cosmic Chemical Connection?

open access: yes, 2008
We discuss the connection between the chemistry of dense interstellar clouds and those characteristics of cometary matter that could be remnants of it. The chemical evolution observed to occur in molecular clouds is summarized and a model for dense core ...
Charnley, S. B., Rodgers, S. D.
core   +2 more sources

Carbon isotope fractionation and depletion in TMC1

open access: yes, 2012
12C/13C isotopologue abundance anomalies have long been predicted for gas-phase chemistry in molecules other than CO and have recently been observed in the Taurus molecular cloud in several species hosting more than one carbon atom, i.e.
Adande   +30 more
core   +1 more source

Reactivity of hydrated hydroxide anion cluster OH(H$_{2}$O)$_{n}^{-}$ with H and Rb: an ab initio study

open access: yes, 2019
We present a theoretical investigation of the hydrated hydroxide anion clusters OH(H$_{2}$O)$_{n}^{-}$ and of the collisional complexes H-OH(H$_{2}$O)$_{n}^{-}$ and Rb-OH(H$_{2}$O)$_{n}^{-}$ (with n$=1-4$).
Kas, Milaim   +3 more
core   +1 more source

Editorial: Refractory Astrochemistry

open access: yesFrontiers in Astronomy and Space Sciences, 2022
Ryan C. Fortenberry   +2 more
doaj   +1 more source

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