Results 11 to 20 of about 792,921 (206)
Optical interstellar lines in dark clouds. [PDF]
The Astrophysical Journal, 1973 <p>Published - <a href="/records/nj8w2-gpn05/files/1973ApJ___186__149C.pdf?download=1">1973ApJ___186__149C.pdf</a></p>
Cohen, Judith G.
openaire +4 more sources
The dark side of interstellar clouds
, 2005 The comparison of HI, CO, dust, and gamma-ray maps in the solar neighborhood has led to the discovery of large amounts of dark gas not traced in HI and CO at the transition between the two phases. Its mass extrapolated to the Galaxy is equivalent or larger than the H2 mass detected in CO. The column-densities and angular extent of the local dark clouds,
Casandjian, J.M. +2 more
core +5 more sources
Interstellar Extinction in the Direction of The Barnard 1 Dark Cloud in Perseus
Open Astronomy, 2003 Spectral and luminosity classes, absolute magnitudes, color excesses, interstellar extinctions and distances are determined for 98 stars down to 18 mag in the Barnard 1 dark cloud belonging to the Per OB2 association. The classification of stars is based
Černis K., Straižys V.
doaj +2 more sources
Optical interstellar lines in dark clouds. II. KI and ultraviolet sodium lines. [PDF]
The Astrophysical Journal, 1974 <p>Published - <a href="/records/1m68x-sst65/files/1974ApJ___192__379C.pdf?download=1">1974ApJ___192__379C.pdf</a></p>
Cohen, Judith G.
openaire +4 more sources
Submillimetre molecular line observations and modelling of molecular clouds. [PDF]
, 1985 PhDSubmillimetre molecular line observations of molecular clouds in our galaxy are presented, and the data analysed using various alternative cloud models.
Richardson, Kevin John
core +4 more sources
The Chemistry of Cold, Dark Interstellar Clouds [PDF]
Symposium - International Astronomical Union, 1987 In recent years the nearby cold, dark clouds have been shown to possess a rich chemistry, with interesting differences with respect to warmer massive-star-forming regions and also among the cold clouds themselves. 39 molecular species are now known in these regions.
openaire +2 more sources
ORTHO-H 2 AND THE AGE OF INTERSTELLAR DARK CLOUDS [PDF]
The Astrophysical Journal, 2011 Interstellar dark clouds are the sites of star formation. Their main component, dihydrogen, exists under two states, ortho and para. H2 is supposed to form in the ortho:para ratio (OPR) of 3:1 and to subsequently decay to almost pure para-H2 (OPR <= 0.001).
Pagani, Laurent +2 more
openaire +3 more sources
Turbulence in the interstellar medium [PDF]
, 2014 Turbulence is ubiquitous in the insterstellar medium and plays a major role in several processes such as the formation of dense structures and stars, the stability of molecular clouds, the amplification of magnetic fields, and the re-acceleration and ...
Chian, A. C. -L. +9 more
core +2 more sources
The effect of dark matter on the Jeans instability with the q-nonextensive velocity distribution
AIP Advances, 2020 Based on the framework of nonextensive statistics and its related kinetic theory, the Jeans instability in a self-gravitational system composed of dark and bright matters is restudied. The results show that the nonextensivity, the presence of dark matter,
Weiheng Yang, Hui Chen, Sanqiu Liu
doaj +1 more source
Diffuse interstellar clouds associated with dark clouds
The Astrophysical Journal, 1982 Measurements of CH emission at 9 cm toward the bright stars ..cap alpha.. Cam and kappa Cas and from dark clouds near the stars reveal an association between diffuse clouds and dark clouds. Here the term diffuse clouds refers to clouds seen in optical absorption; the term dark clouds refers to opaque regions on the Palomar Sky Survey observed through ...
S. R. Federman, R. F. Willson
openaire +1 more source