Results 51 to 60 of about 4,695,407 (375)

Impact Of Magnetic Fields On Molecular Cloud Formation & Evolution [PDF]

open access: yes, 2015
We use magnetohydrodynamical simulations of converging flows to investigate the process of molecular cloud formation and evolution out of the magnetised ISM.
B. Kortgen, R. Banerjee
semanticscholar   +1 more source

Chemistry of Molecular Clouds [PDF]

open access: yesInternational 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

Cloud-cloud Collision in the Galactic Center 50 km s$^{-1}$ Molecular Cloud [PDF]

open access: yes, 2015
We performed a search of star-forming sites influenced by external factors, such as SNRs, HII regions, and cloud-cloud collisions, to understand the star-forming activity in the Galactic center region using the NRO Galactic Center Survey in SiO $v=0, J=2-
M. Tsuboi, A. Miyazaki, K. Uehara
semanticscholar   +1 more source

SUPERNOVA DRIVING. I. THE ORIGIN OF MOLECULAR CLOUD TURBULENCE [PDF]

open access: yes, 2015
Turbulence is ubiquitous in molecular clouds (MCs), but its origin is still unclear because MCs are usually assumed to live longer than the turbulence dissipation time.
P. Padoan   +3 more
semanticscholar   +1 more source

‘The Brick’ is not abrick: a comprehensive study of the structure and dynamics of the central molecular zone cloud G0.253+0.016 [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2019
In this paper we provide a comprehensive description of the internal dynamics of G0.253+0.016 (a.k.a. 'the Brick'); one of the most massive and dense molecular clouds in the Galaxy to lack signatures of widespread star formation. As a potential host to a
J. Henshaw   +22 more
semanticscholar   +1 more source

Molecular Abundances in the Sgr a Molecular Cloud [PDF]

open access: yesSymposium - 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

SUBMILLIMETER POLARIZATION SPECTRUM IN THE VELA C MOLECULAR CLOUD [PDF]

open access: yes, 2015
Polarization maps of the Vela C molecular cloud were obtained at 250, 350, and 500 μm during the 2012 flight of the balloon-borne telescope BLASTPol.
N. Gandilo   +29 more
semanticscholar   +1 more source

Cloud-scale Molecular Gas Properties in 15 Nearby Galaxies [PDF]

open access: yesAstrophysical Journal, 2018
We measure the velocity dispersion, σ, and surface density, Σ, of the molecular gas in nearby galaxies from CO spectral line cubes with spatial resolution 45–120 pc, matched to the size of individual giant molecular clouds. Combining 11 galaxies from the
Jiayi Sun   +21 more
semanticscholar   +1 more source

Statistical study of dust properties in LMC molecular clouds [PDF]

open access: yes, 2010
The objective of this paper is to construct a catalog providing the dust properties and the star formation efficiency (SFE) of the molecular clouds in the Large Magellanic Cloud (LMC).
Akiko Kawamura   +36 more
core   +2 more sources

CARMA LARGE AREA STAR FORMATION SURVEY: OBSERVATIONAL ANALYSIS OF FILAMENTS IN THE SERPENS SOUTH MOLECULAR CLOUD [PDF]

open access: yes, 2014
We present the N2H+ (J = 1 → 0) map of the Serpens South molecular cloud obtained as part of the CARMA Large Area Star Formation Survey. The observations cover 250 arcmin2 and fully sample structures from 3000 AU to 3 pc with a velocity resolution of 0 ...
M. Fernández-López   +22 more
semanticscholar   +1 more source

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