Results 101 to 110 of about 7,455 (223)

The formation of interstellar diatomic molecules

, 1972
Reactions between atoms and ions of the interstellar medium and vibrationally excited molecular hydrogen are shown to produce a specific set of molecules.
Williams, D. A., Stecher, T. P.
core  

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., Юдилевич, И.А., Щекинов, Ю.А.   +2 more
core   +2 more sources

Collisional excitation of interstellar chloronium: accurate rate coefficients with astrophysical applications

International audienceRecent astronomical observations [1,2] have shown that chloronium (H2Cl+) is an important intermediate in Cl-chemistry of the interstellar medium (ISM) due to its specific thermodynamic properties. For a proper interpretation of the
Lique, François, Demes, S., Kȩdziera, Dariusz, Faure, Alexandre   +3 more
core  

Interstellar grain chemistry and organic molecules

, 1990
The detection of prominant infrared absorption bands at 3250, 2170, 2138, 1670 and 1470 cm(-1) (3.08, 4.61, 4.677, 5.99 and 6.80 micron m) associated with molecular clouds show that mixed molecular (icy) grain mantles are an important component of the ...
Sandford, S. A., Allamandola, L. J.
core  

Photoabsorption and photodissociation of molecules important in the interstellar medium

, 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., Suto, Masako, Sutom, Masako   +2 more
core  

Interstellar Ices: A Factory of the Origin-of-Life Molecules [PDF]

Interstellar-ice chemistry paves the way for disclosing the mystery of the origin of life: amino acids and other prebiotic molecules are formed in ...
Puzzarini C., Alessandrini S.
core   +1 more source

Searches for interstellar molecules of potential prebiotic importance

, 2004
Interstellar chemistry leads to the formation of many prebiologically important molecules and is therefore of the fundamental interest to Astrobiology. Many organics can be produced in the gas phase where they can be detected.
Charnley, S.B., Ehrenfreund, P., Yan, C.-H., Kuan, Y.-J., Kisiel, Z., Tseng, W.-L., Huang, H.-C.   +6 more
core   +1 more source

Indirect observation of unobservable interstellar molecules

, 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., Thaddeus, P., Klemperer, W., Herbst, E.   +3 more
core  

Spectroscopic Identification and Photochemistry of Astrochemically Relevant Phosphorus-bearing Molecules [O, C, N, P] and [2O, C, N, P]

The Astrophysical Journal
Diatomic molecules phosphorus monoxide (PO) and phosphorus mononitride (PN) are the main reservoirs of gas-phase phosphorus in interstellar and circumstellar environments, indicating the possibility of forming new phosphorus-bearing molecules through ...
Bifeng Zhu, Minghao Wang, Junjie Jiang, Ningjing Jiang, Jingling Hong, Guntram Rauhut, Guanjun Wang, Weixing Li, Xiaoqing Zeng   +8 more
doaj   +1 more source

On the Origin of Infrared Bands Attributed to Tryptophan in Spitzer Observations of IC 348

The Astrophysical Journal Letters
Infrared emission features toward interstellar gas of the IC 348 star cluster in Perseus have been recently proposed to originate from the amino acid tryptophan.
Aditya Dhariwal, Thomas H. Speak, Linshan Zeng, Amirhossein Rashidi, Brendan Moore, Olivier Berné, Anthony J. Remijan, Ilane Schroetter, Brett A. McGuire, Víctor M. Rivilla, Arnaud Belloche, Jes K. Jørgensen, Pavle Djuricanin, Takamasa Momose, Ilsa R. Cooke   +14 more
doaj   +1 more source