Results 11 to 20 of about 25,467 (307)
HCO+ in dark molecular clouds [PDF]
Serbian Astronomical Journal, 2007 Formyl ion is one of the most important molecules, and primary molecular ion to be found in molecular clouds. This paper reviews chemical pathways of formation and destruction of the molecule, as well as its use as a tool in the study of dark molecular ...
Nikolić S.
doaj +2 more sources
Cosmic Rays and Molecular Clouds [PDF]
, 2012 ISBN 978-3-642-35409-0International audienceThis paper deals with the cosmic-ray penetration into molecular clouds and with the related gamma-ray emission.
Stefano Gabici, Gabici, S.
core +4 more sources
Molecular Clouds and Star Formation Rate in Disk Galaxies
Open Astronomy, 2016 We use N-body/hydrodynamic simulations of a Milky Way-like galaxy to study the physical properties of giant molecular clouds and star formation rate on different spatial scales.
Vasiliev E. O. +2 more
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The Molecular Cloud Lifecycle [PDF]
Space Science Reviews, 2020 AbstractGiant molecular clouds (GMCs) and their stellar offspring are the building blocks of galaxies. The physical characteristics of GMCs and their evolution are tightly connected to galaxy evolution. The macroscopic properties of the interstellar medium propagate into the properties of GMCs condensing out of it, with correlations between e.g.
Chevance, Mélanie +8 more
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THE CALIFORNIA MOLECULAR CLOUD [PDF]
The Astrophysical Journal, 2009 Accepted for publication in the ApJ. This submission has low resolution figures. Preprint with full resolution figures can be found at http://www.cfa.harvard.edu/~clada/pubs_html/California ...
C. J. Lada, M. Lombardi, J. F. Alves
openaire +2 more sources
Turbulence in Molecular Clouds [PDF]
The Astrophysical Journal, 1995 accepted in ApJ, compressed postscript, figures not included. Complete preprint available at http://ucowww.ucsc.edu/~dubinski/home.html or by request to dubinski@lick.ucsc ...
Dubinski, John +2 more
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Molecular line signatures of cloud–cloud collisions [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT Collisions between interstellar gas clouds are potentially an important mechanism for triggering star formation. This is because they are able to rapidly generate large masses of dense gas. Observationally, cloud collisions are often identified in position–velocity (PV) space through bridging features between intensity peaks ...
Priestley, F. D., Whitworth, A. P.
openaire +3 more sources
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.
Y. C. Minh, W. M. Irvine, P. Friberg
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Fragmentation in molecular clouds [PDF]
Symposium - International Astronomical Union, 1991 B209. Fragments are detected in the outer parts of the B209 molecular cloud in a region of density 1000 cm −3 using 12 CO, 13 CO, H 2 CO, IRAS 60 and 100
Frank O. Clark +2 more
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Evolution of prolate molecular clouds at HII boundaries - I. formation of fragment-core structures [PDF]
, 2014 The evolution of a prolate cloud at an HII boundary is investigated using smoothed particle hydrodynamics. The prolate molecular clouds in our investigation are setwith their semi-major axis perpendicular to the radiative direction of a plane-parallel ...
Goodwin S +10 more
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