Results 151 to 160 of about 1,818 (183)

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

Masses of interstellar clouds

Astrophysics and Space Science, 1978
Equilibrium masses of slowly rotating interstellar gas clouds have been calculated using an equation of state for the interstellar gas developed by Penston and Brown. The rotation is found to increase the equilibrium masses, but still the cloud masses are not as large as indicated by other considerations.
A. N. Dharmani, V. B. Bhatia
openaire   +1 more source

Thermal instability in magnetized interstellar clouds

Astronomical & Astrophysical Transactions, 1997
Abstract The effect of a magnetic field on the ionizational-thermal acoustic instability in the cold diffuse ISM is discussed in this paper. It is found that the frozen-in magnetic field leads to new types of instabilities called “magnetoacoustic” instabilities.
Alexander E. Dudorov, Constantine E. Stepanov   +1 more
openaire   +1 more source

Fragmentation of Interstellar Clouds

2014
The dense cores that form stars through gravitational collapse are embedded in much larger and more rarefied expanses of gas. How the parent▶molecular cloud produces its substructure of dense cores is the problem of fragmentation. The traditional view is that the parent cloud breaks apart as it collapses in on itself.
openaire   +1 more source

Translucent Interstellar Clouds

2011
A translucent interstellar cloud is one that has visual extinction intermediate between that of a ▶ diffuse cloud and that of a dense ▶molecular cloud. Despite the importance of photochemical processes over much of their extent, translucent clouds contain significant molecular column densities.
openaire   +1 more source

Organic Molecules in the Interstellar Medium, Comets, and Meteorites: A Voyage from Dark Clouds to the Early Earth

Annual Review of Astronomy and Astrophysics, 2000
Pascale Ehrenfreund, Steven B Charnley
exaly  

The ion chemistry of interstellar clouds

Chemical Reviews, 1992
David Smith
exaly  

Modelling deuterium fractionation in interstellar clouds

Planetary and Space Science, 2002
T J Millar
exaly  

Streaming instabilities in multicomponent interstellar clouds

Physics of Plasmas, 2008
S Ali Shan, H Saleem
exaly  

Interstellar Dust and Extinction

Annual Review of Astronomy and Astrophysics, 1990
John S Mathis
exaly