Results 51 to 60 of about 2,128 (220)
Probing the Distinct Extinction Law of the Pillars of Creation in M16 with JWST
The Astrophysical Journal LettersInvestigating the extinction law in regions of high dust extinction, such as the Pillars of Creation within the M16 region, is crucial for understanding the densest parts of the interstellar medium (ISM).
Jun Li +4 more
doaj +1 more source
FacetClumps: A Facet-based Molecular Clump Detection Algorithm
The Astrophysical Journal Supplement Series, 2023 A comprehensive understanding of molecular clumps is essential for investigating star formation. We present an algorithm for molecular clump detection, called FacetClumps.
Yu Jiang +7 more
doaj +1 more source
Sulfur chemistry in dense interstellar clouds
The Astrophysical Journal, 1982 A model is presented for the gas phase chemistry of molecules containing sulfur in dense interstellar clouds. The sulfur chemistry is different from that used in previous models as a result of an extensive search of the recent literature and the availability of new laboratory data.
S. S. Prasad, W. T., Jr. Huntress
openaire +1 more source
Valence Threshold Photoionization Spectra of C5$_5$H and C5$_5$H2$_2$ Isomers
ChemPhysChem, Volume 27, Issue 8, 28 April 2026.Mass‐selected threshold photoelectron spectra (TPES) of l‐C5H, HC5H, and c–C3H‐CCH were recorded using double‐imaging photoelectron‐photoion coincidence spectroscopy. These transient species were generated in situ by hydrogen abstraction from cyclopropylacetylene and 1,3‐pentadiyne.
Ugo Jacovella +9 more
wiley +1 more source
The Astronomical JournalThe viability of the star count (Wolf) method is assessed as a means of constraining the near-infrared (NIR) extinction law toward the Corona Australis molecular cloud. Using deep JHK _S photometry from the VISIONS survey, extinction maps with 1′ spatial
Botao Jiang, Jun Li, Xi Chen
doaj +1 more source
Prebiotic Organic Chemistry of Diketopiperazines
Asian Journal of Organic Chemistry, Volume 15, Issue 4, April 2026.Diketopiperazines (DKPs) are considered essential in many life forms, but their prebiotic importance has not been fully understood. This review aims to discuss prebiotic organic chemistry for experimentally and computationally simulated reactions involving DKPs. ABSTRACT Even though the significance of amino acids and polypeptides is well recognized in
Jun Ohata
wiley +1 more source
Interstellar deuterium in cold dense clouds
The Astrophysical Journal, 1993 The mechanism for deuterium fractionation in interstellar clouds is considered within the boundaries of the theory of Dalgarno & Lepp. The abundance of D atoms and fractional ionization in cold clouds are derived from the observational data of molecular ions.
openaire +1 more source
Molecular hydrogen formation during dense interstellar cloud collapse [PDF]
Monthly Notices of the Royal Astronomical Society, 2005 19 pages, 10 figures, MNRAS (submitted)
Acharyya, K. +2 more
openaire +2 more sources
Journal of Physical Organic Chemistry, Volume 39, Issue 4, April 2026.New calculations have been applied to the pyrolysis of pyrrole under shock‐tube conditions and to the radical‐radical reaction between allyl and •CN at low temperature and pressure, using the same mechanistic scheme for both. ABSTRACT The pyrolysis of pyrrole has previously been studied in shock‐tube experiments and in jet‐stirred reactors. The results
Barry K. Carpenter
wiley +1 more source
LiH molecules in dense interstellar clouds
, 1986 Оценены содержания молекул LiH в межзвездных облаках. Рассчитаны температуры возбуждения вращательных уровней и ожидаемые потоки излучения, соответствующие вращательным переходам.
Вайнер, Б.В. +2 more
core +2 more sources