Results 241 to 250 of about 2,145,468 (291)

Large interstellar molecules

Astrophysics and Space Science, 1977
We propose that photocycloaddition reactions in molecular complexes in normal interstellar clouds will create unusually large molecules. These may be sufficiently radiation stable to be circulated with the interstellar gas, and so provide convenient nucleation centres for growth of loosely bound grains in dark regions.
T. J. Millar, D. A. Williams
openaire   +1 more source

Detection of interstellar 1-cyanopyrene: A four-ring polycyclic aromatic hydrocarbon.

Science
Polycyclic aromatic hydrocarbons (PAHs) are organic molecules containing adjacent aromatic rings. Infrared emission bands show that PAHs are abundant in space, but only a few specific PAHs have been detected in the interstellar medium.
Gabi Wenzel, I. Cooke, P. B. Changala, Edwin A. Bergin, Shuo Zhang, A. Burkhardt, Alex N. Byrne, S. Charnley, M. Cordiner, Miya Duffy, Zachary T. P. Fried, Harshal Gupta, Martin S. Holdren, A. Lipnicky, R. Loomis, H. Shay, C. Shingledecker, M. Siebert, D. A. Stewart, Reace H. J. Willis, C. Xue, A. Remijan, Alison E. Wendlandt, M. C. McCarthy, B. McGuire   +24 more
semanticscholar   +1 more source

Interstellar molecules

2007
G, Winnewisser, P G, Mezger, H D, Breuer
  +6 more sources

A new interstellar molecule: triearbon monoxide

Nature, 1984
The published version is located at http://www.nature.com/nature/journal/v310/n5973/abs/310125a0 ...
MATTHEWS, HE, Irvine, William M., FRIBERG, P, BROWN, RD, GODFREY, PD   +4 more
openaire   +3 more sources

Interstellar molecule reactions

Reviews of Modern Physics, 1976
Considerable progress has been made during the past five years toward a quantitative understanding of the formation and destruction processes for interstellar molecules. Two areas have been most successful---investigations of the formation process for molecular hydrogen on the surfaces of dust grains and studies of reactions involving positive ions in ...
openaire   +1 more source

Molecules in Interstellar Clouds

1981
The physical and chemical state of interstellar clouds is reviewed, including recent investigations at the Onsala Space Observatory. The Orion A region is chosen as an example of a “giant” molecular cloud and hence a formation site for massive stars. The Taurus Molecular Clouds, in contrast, may be the future birthplace of solar-type stars.
Irvine, William M., Hjalmarson, Ake, Rydbeck, Olof   +2 more
openaire   +1 more source

Interstellar Molecules and Interstellar Chemistry

1986
Radio astronomers have to date detected some 60 or so molecules in interstellar space. These molecules have been identified, in the majority of cases, by recording the microwave spectrum received by radio telescope from an interstellar or circumstellar dust cloud and comparing it with the spectra produced in laboratory experiments.
openaire   +1 more source

Interstellar Molecules and Astrochemistry

1988
The quantitative study of the interstellar medium (ISM) began with Hartman’s detection in 1904 of the resonance lines of Ca and K, seen in absorption against bright stars by intervening diffuse clouds. Other atoms (Na,Fe,Ti) were subsequently detected, although the overwhelming abundance of H was not recognized until the 1930s.
Barry E. Turner, Lucy M. Ziurys
openaire   +1 more source

The synthesis of large interstellar molecules

, 2017
E. Herbst
semanticscholar   +1 more source

Interstellar molecules

Physics Reports, 1991
J. Lequeux, E. Roueff
openaire   +1 more source