Results 101 to 110 of about 35,251 (238)

The Cosmochemistry of Protostellar Matter [PDF]

, 1990
The different processes that can affect the chemical composition of matter as it evolves from quiescent molecular clouds into protostellar regions is discussed. Millimeter observations of molecules at high angular resolution in cold, dark clouds such
Blake, Geoffrey A., Mundy, Lee G., van Dishoeck, Ewine F.   +2 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

The Formation of Large Interstellar Molecules [PDF]

, 1975
T. J. Millar, D. A. Williams
openalex   +1 more source

5 cm OH Masers in Northern Star Formation Regions

The Astronomical Journal
We present a 6.0 GHz excited-state OH maser survey toward 155 northern star formation regions utilizing the Shanghai Tianma Radio Telescope. In total, we detect 44 6.0 GHz OH masers, 8 of which are new detections (one at 6016 MHz, two at 6030 MHz, and ...
Hai-Hua Qiao, Xu-Jia Ouyang, Zhi-Qiang Shen, Shari L. Breen, Kai Yang, Xi Chen, Juan Li   +6 more
doaj   +1 more source

Indirect observation of unobservable interstellar molecules [PDF]

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., Herbst, E., Klemperer, W., Thaddeus, P.   +3 more
core   +1 more source

Indirect observation of unobservable interstellar molecules [PDF]

, 1977
Eric Herbst, S. Green, P. Thaddeus, William Klemperèr   +3 more
openalex   +1 more source

Molecular and mass spectroscopic analysis of isotopically labeled organic residues [PDF]

Experimental studies aimed at understanding the evolution of complex organic molecules on interstellar grains were performed. The photolysis of frozen gas mixtures of various compositions containing H2O, CO, NH3, and CH4 was studied.
Briggs, R., Degroot, M. S., Ferris, J. P., Greenberg, J. Mayo, Mccain, P., Mendoza-Gomez, Celia X., Schutte, Willem A.   +6 more
core   +1 more source

Scientific returns from a program of space missions to comets [PDF]

A program of cometary missions is proposed. The nature and size of interstellar dust, its origin and evolution; identification of new interstellar molecules; clarification of interstellar chemistry; accretion of grains into protosolar cometesimals; role ...
Delsemme, A. H.
core   +1 more source

Microwave spectral studies of interstellar molecules [PDF]

, 1978
Ronald D. Brown
openalex   +1 more source

Interstellar grain mantles [PDF]

Interstellar molecular grain mantles are an important component of the interstellar dust inside dense molecular clouds as evidenced by the detection of absorption bands at 2.97, 3.08, 4.61, 6.0 and 6.8 microns.
Allamandola, Louis J., Bregman, J., Tielens, Alexander G. G. M., Witteborn, F. C.   +3 more
core   +1 more source