Results 111 to 120 of about 668,448 (162)
Methanetetrol and the final frontier in ortho acids
Nature CommunicationsThe rapid dissociation of methanetetrol (C(OH)4) has been suggested as an impediment to its observation, despite the stability of its substituted derivative orthocarbonates (C(OR)4).
Joshua H. Marks +10 more
doaj +1 more source
Dust Absorption toward Supernova Remnant W44
The Astronomical JournalSupernova remnants (SNRs) can strongly affect the chemical composition of the interstellar dust. In this paper, we investigate to what degree the dust and ices are modified by observing four stars expected to be absorbed by a giant molecular cloud ...
Tian-Yu Tu +3 more
doaj +1 more source
Carbon addition as the dominant pathway for aromatic growth in dense molecular clouds
Astronomy & AstrophysicsContext. Recent radioastronomical detections of aromatic molecules and small polycyclic aromatic hydrocarbons (PAHs) in dense molecular clouds, particularly in TMC-1, have revealed unexpectedly high abundances that cannot be reproduced by standard ...
Loison Jean-Christophe, Jacovella Ugo
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The Magnetic Keys to Massive Star Formation: The Western η Carinae Giant Molecular Cloud
The Astrophysical JournalWe present SOFIA/HAWC+ continuum polarization data on the magnetic fields ( B fields) threading 17 pc-scale massive molecular clumps at the western end of the η Carinae giant molecular cloud (Region 9 of the Galactic Census of High- and Medium-mass ...
Peter J. Barnes +3 more
doaj +1 more source
Formation of water on silicate surfaces under interstellar conditions
, 2011 International audienceWe explore experimentally the formation of water molecules from O2 and D atoms on bare grains composed of amorphous silicates analogous to those in diffuse interstellar clouds.
Minissale, Marco +6 more
core +1 more source
Isotopic Fractionation in Interstellar Chemistry [PDF]
, 2018 Anomalously fractionated isotopic material is found in many primitive Solar System objects, such as meteorites and comets. It is thought, in some cases, to trace interstellar matter that was incorporated into the Solar Nebula without undergoing ...
Charnley, Steven B.
core
The Astrophysical JournalWe present some of the first infrared spectral maps acquired by SPHEREx. These maps, which to our knowledge are the largest of their type ever compiled in the near-infrared, reveal multiple strong lines due to interstellar ices and polycyclic aromatic ...
Joseph L. Hora +34 more
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PHOSPHORUS CHEMISTRY IN DENSE INTERSTELLAR CLOUDS
, 1991 I have used recent laboratory studies on the reactions of the phosphorus hydride ions, PH(n)+ (n = 0-4) to construct a new model of phosphorus chemistry in interstellar clouds.
Millar, TJ
core +2 more sources
Observing Colocated Neutral and Ionized Gas-phase Iron Depletion in the Magellanic Clouds
The Astrophysical JournalDepletion is the observed phenomenon where gas-phase elemental abundances are reduced through accretion onto dust grains. We measure neutral gas-phase elemental abundances (S, Fe) in the Magellanic Clouds along 33 sightlines using high-resolution UV ...
Yun Qi Li +7 more
doaj +1 more source
Extinction Distributions in Nearby Star-resolved Galaxies. II. M33
The Astronomical JournalExtinction maps are essential for tracing interstellar dust and enabling accurate stellar population studies in galaxies. Here, a high-resolution extinction distribution of the nearby Triangulum galaxy (M33), is constructed by fitting multiband color ...
Yuxi Wang +4 more
doaj +1 more source