Results 61 to 70 of about 4,544,171 (395)
Submillimeter and Far-Infrared Polarimetric Observations of Magnetic Fields in Star-Forming Regions
Frontiers in Astronomy and Space Sciences, 2019 Observations of star-forming regions by the current and upcoming generation of submillimeter polarimeters will shed new light on the evolution of magnetic fields over the cloud-to-core size scales involved in the early stages of the star formation ...
Kate Pattle, Laura Fissel
doaj +1 more source
A general theory for the lifetimes of giant molecular clouds under the influence of galactic dynamics [PDF]
, 2018 We propose a simple analytic theory for environmentally-dependent molecular cloud lifetimes, based on the large-scale (galactic) dynamics of the interstellar medium.
S. Jeffreson, J. Kruijssen
semanticscholar +1 more source
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 +1 more source
A UNIFORM CATALOG OF MOLECULAR CLOUDS IN THE MILKY WAY [PDF]
, 2016 The all-Galaxy CO survey of Dame et al. is by far the most uniform, large-scale Galactic CO survey. Using a dendrogram-based decomposition of this survey, we present a catalog of 1064 massive molecular clouds throughout the Galactic plane.
T. Rice +4 more
semanticscholar +1 more source
Molecular clouds in the center of M 81 [PDF]
Astronomy & Astrophysics, 2007 We investigate the molecular gas content and the excitation and fragmentation properties in the central region of the spiral galaxy Messier 81 in both the ^{12}CO(1-0) and ^{12}CO(2-1) transitions. We have recently observed the two transitions of CO in the M~81 center with A, B, and HERA receivers of the IRAM 30-m telescope.
CASASOLA, VIVIANA +3 more
openaire +6 more sources
Turbulent Driving Scales in Molecular Clouds
, 2009 Supersonic turbulence in molecular clouds is a dominant agent that strongly affects the clouds' evolution and star formation activity. Turbulence may be initiated and maintained by a number of processes, acting at a wide range of physical scales.
Anathpindika +56 more
core +1 more source
SILCC-Zoom: the dynamic and chemical evolution of molecular clouds [PDF]
, 2017 We present 3D ‘zoom-in’ simulations of the formation of two molecular clouds out of the galactic interstellar medium. We model the clouds – identified from the SILCC simulations – with a resolution of up to 0.06 pc using adaptive mesh refinement in ...
D. Seifried +8 more
semanticscholar +1 more source
ASTROCHEMICAL CORRELATIONS IN MOLECULAR CLOUDS [PDF]
The Astrophysical Journal, 2015 Accepted by ApJ.
Erik Rosolowsky +4 more
openaire +4 more sources
Review of Zeeman Effect Observations of Regions of Star Formation
Frontiers in Astronomy and Space Sciences, 2019 The Zeeman effect is the only observational technique available to measure directly the strength of magnetic fields in regions of star formation. This chapter reviews the physics of the Zeeman effect and its practical use in both extended gas and in ...
Richard M. Crutcher, Athol J. Kemball
doaj +1 more source
Understanding the Kinetic Energy Deposition within Molecular Clouds
The Astrophysical Journal, 2023 According to the structures traced by ^13 CO spectral lines within ^12 CO molecular clouds (MCs), we investigate the contributions of their internal gas motions and relative motions to the total velocity dispersions of ^12 CO MCs. Our samples of 2851 ^12
Lixia Yuan +10 more
doaj +1 more source