AGB Stars and Their Circumstellar Envelopes: An Operative Approach to Computing Their Atmospheres
Universe, 2021 The study of AGB stars necessarily covers a wide range of topics, from the primary astronomical observations to their interpretation in terms of fundamental physics.
Sérgio Cristallo +2 more
exaly +3 more sources
Insights Into the Gas-Phase Structure and Internal Dynamics of Diphenylsilane: A Broadband Rotational Spectroscopy Study. [PDF]
ChemphyschemThe structure of diphenylsilane could be determined from the rotational spectra of all its singly substituted heavy atom isotopologues. A comparison with its oxygen analogue diphenylether revealed some interesting differences in the internal dynamics as well as in the gas‐phase structure.
Batra G, Schnell M.
europepmc +2 more sources
The abundance of S- and Si-bearing molecules in O-rich circumstellar envelopes of AGB stars [PDF]
Astronomy and Astrophysics, 2020 Sarah Massalkhi, Marcelino Agúndez
exaly +2 more sources
n-Alkanes formed by methyl-methylene addition as a source of meteoritic aliphatics [PDF]
Communications ChemistryAliphatics prevail in asteroids, comets, meteorites and other bodies in our solar system. They are also found in the interstellar and circumstellar media both in gas-phase and in dust grains.
P. Merino +16 more
doaj +2 more sources
The chemistry in circumstellar envelopes of evolved stars: Following the origin of the elements to the origin of life [PDF]
Proceedings of the National Academy of Sciences of the United States of America, 2006 Lucy Ziurys
exaly +2 more sources
On the Presence of Metallofullerenes in Fullerene-rich Circumstellar Envelopes
The Astrophysical Journal, 2022 The presence of neutral C _60 fullerenes in circumstellar environments has been firmly established by astronomical observations as well as laboratory experiments and quantum-chemistry calculations. However, the large variations observed in the C _60 17.4
R. Barzaga +5 more
doaj +1 more source
AGB Stars and Their Circumstellar Envelopes. I. the VULCAN Code
Universe, 2021 The interplay between AGB interiors and their outermost layers, where molecules and dust form, is a problem of high complexity. As a consequence, physical processes like mass loss, which depend on the chemistry of the circumstellar envelope, are often ...
Sergio Cristallo +4 more
doaj +1 more source
ChemPhysChem, Volume 24, Issue 22, November 16, 2023., 2023 Can the radical C5N bind a free electron to form a dipole‐bound state? The answer is sought using multi‐reference ab initio quantum chemical methods. Abstract We present results of quantum structure calculations aimed at demonstrating the possible existence of dipole‐bound states (DBS) for the anion C5N- ${{\rm{C}}_5 {\rm{N}}^ - }$ , a species already ...
Stanka Jerosimić +4 more
wiley +1 more source
International Journal of Chemical Kinetics, Volume 55, Issue 11, Page 731-742, November 2023., 2023 Abstract The kinetics of the tautomerization of thio‐imidic acids RC(SH)NH were determined at low (50–300 K) and high (500–1500 K) temperatures as R was varied to encompass mono‐ and diatomic species H, F, HO, NC, CN through H2N, HC(O), HC(S), HC≡ C, H3C, F3C, HOCH2, H2C=CH, CH3C(O), H2NCH2 and including ethyl, isopropyl and phenyl groups. The presence
Judith Würmel, John M. Simmie
wiley +1 more source
Crescent-shaped Molecular Outflow from the Intermediate-mass Protostar DK Cha Revealed by ALMA
The Astrophysical Journal, 2023 We report on an Atacama Large Millimeter/submillimeter Array study of the Class I or II intermediate-mass protostar DK Cha in the Chamaeleon II region.
Naoto Harada +8 more
doaj +1 more source