Results 91 to 100 of about 1,176,456 (219)
Relative Velocities between 13CO Structures within 12CO Molecular Clouds
The Astronomical JournalVelocity fields of molecular clouds (MCs) can provide crucial information on the merger and split between clouds, as well as their internal kinematics and maintenance, energy injection and redistribution, and even star formation within clouds.
Lixia Yuan +12 more
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Photoabsorption and photodissociation of molecules important in the interstellar medium [PDF]
, 1988 Photoabsorption and fluorescence cross sections of molecules important in the interstellar medium were measured in the 90 to 200 nm region using synchrotron radiation, excimer laser, and condensed discharge lamps as light sources.
Lee, Long C. +2 more
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Molecules in interstellar space [PDF]
Science, 2019 Astrochemistry Chemistry in space occurs wherever gas is dense and cool enough for chemical bonds to form, producing a wide variety of molecules. These are particularly common in the gas clouds that provide the raw material for star and planet formation. McGuire has cataloged all molecules detected in the interstellar and circumstellar medium.
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The Astrophysical Journal LettersWe report the discovery of multiple compact molecular features exhibiting extremely broad velocity widths toward the W44 molecular cloud. Atacama Large Millimeter/submillimeter Array CO J = 3–2 data reveal eight “Petit-Bullets” surrounding the previously
Momoko Makita +3 more
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, 2018 This paper reports the first extensive study of the existence and effects of interstellar hydrogen bonding. The reactions that occur on the surface of the interstellar dust grains are the dominant processes by which interstellar molecules are formed ...
Gorai, Prasanta +4 more
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Interstellar Molecules in Meteorites [PDF]
Symposium - International Astronomical Union, 1989 Substantial enrichment of deuterium, D, in certain components of chondritic meteorites is interpreted as a record of isotopic fractionation during ion-molecule reactions at the very low temperatures characteristic of dense interstellar clouds. Whether those meteorites still contain the actual molecules that were synthesised in the presolar interstellar
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Molecular Gas Morphological Analogs for the Milky Way
The Astrophysical Journal LettersComplete catalogs of molecular clouds in the Milky Way allow analysis of the molecular medium and the star formation properties of the Milky Way that closely follows the method used for nearby galaxies.
Neal J. Evans II +4 more
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Photochemistry and Astrochemistry: Photochemical Pathways to Interstellar Complex Organic Molecules
, 2017 The interstellar medium is characterized by a rich and diverse chemistry. Many of its complex organic molecules are proposed to form through radical chemistry in icy grain mantles. Radicals form readily when interstellar ices (composed of water and other
Oberg, Karin
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Cosmic Dust as a Prerequisite for the Formation of Complex Organic Molecules in Space?
The Astrophysical JournalIn cold, dense astrophysical environments dust grains are mixed with molecular ices. Chemistry in those dust/ice mixtures is determined by diffusion and reaction of molecules and radicals.
Alexey Potapov +4 more
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Indirect observation of unobservable interstellar molecules [PDF]
, 1977 It is suggested that the abundances of neutral non-polar interstellar molecules unobservable by radio astronomy can be systematically determined by radio observation of the protonated ions.
Green, S. +3 more
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