Results 41 to 50 of about 4,469,999 (359)
Filamentary Fragmentation and Accretion in High-mass Star-forming Molecular Clouds [PDF]
, 2018 Filamentary structures are ubiquitous in high-mass star-forming molecular clouds. Their relation with high-mass star formation is still to be understood.
Xing Lu +9 more
semanticscholar +1 more source
The spatial relation between young star clusters and molecular clouds in M51 with LEGUS [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We present a study correlating the spatial locations of young star clusters with those of molecular clouds in NGC 5194, in order to investigate the time-scale over which clusters separate from their birth clouds.
K. Grasha +26 more
semanticscholar +1 more source
The integrated properties of the molecular clouds from the JCMT CO(3–2) High-Resolution Survey [PDF]
Monthly notices of the Royal Astronomical Society, 2018 We define the molecular cloud properties of the Milky Way first quadrant using data from the JCMT CO(3–2) High-Resolution Survey. We apply the Spectral Clustering for Interstellar Molecular Emission Segmentation (SCIMES) algorithm to extract objects from
Dario Colombo +8 more
semanticscholar +1 more source
Helical magnetic fields in molecular clouds? [PDF]
Astronomy & Astrophysics, 2018 Context. Magnetic fields pervade in the interstellar medium (ISM) and are believed to be important in the process of star formation, yet probing magnetic fields in star formation regions is challenging. Aims.
M. Tahani +3 more
semanticscholar +1 more source
Supernova remnants in molecular clouds [PDF]
AIP Conference Proceedings, 1999 31 pages, 4 figures, revised, in press, ApJ, Feb.
openaire +6 more sources
The Milky Way in Molecular Clouds: A New Complete CO Survey [PDF]
, 2000 New large-scale CO surveys of the first and second Galactic quadrants and the nearby molecular cloud complexes in Orion and Taurus, obtained with the CfA 1.2 m telescope, have been combined with 31 other surveys obtained over the past two decades with ...
T. Dame, D. Hartmann, P. Thaddeus
semanticscholar +1 more source
Tracing the formation of molecular clouds via [C ii], [C i], and CO emission [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Our understanding of how molecular clouds form in the interstellar medium (ISM) would be greatly helped if we had a reliable observational tracer of the gas flows responsible for forming the clouds. Fine structure emission from singly ionized and neutral
P. Clark +3 more
semanticscholar +1 more source
Chemistry of Molecular Clouds [PDF]
International Astronomical Union Colloquium, 1989 AbstractA discussion is presented of the chemistry of quiescent molecular clouds, and the effects of the presence of polycyclic aromatic hydrocarbon molecules and of cosmic-ray induced ultraviolet photons are examined. A comparison is made with the chemistry occurring in molecular clouds that are subjected to shocks and the differences between ...
openaire +2 more sources
ON THE THEORY OF THE OF-CENTRAL EXPLOSION IN A SPHERICALLY STRATIFIED MEDIUM
Radio Physics and Radio Astronomy, 2015 Аn analytical solution for a spherically stratified medium is constructed on the strength of an earlier obtained exact solution of Kompaneets equation for the shock front in a planar stratified medium with the density changing as the hyperbolic tangent ...
G. V. Donets
doaj +1 more source
Molecular Abundances in the Sgr a Molecular Cloud [PDF]
Symposium - International Astronomical Union, 1992 We have obtained column densities for HCO+, HCO, HCS+, C3H2, HC5N, SiO, OCS, HCOOH, CH3CH2 OH, and CH3CCH toward Sgr A. The fractional abundance of SiO relative to molecular hydrogen in Sgr A is comparable to that for the Orion plateau, ~ 10−7 − 10−8, which may be a typical value for hot clouds.
Yc Minh, William M. Irvine, Per Friberg
openaire +2 more sources