Results 71 to 80 of about 238,168 (251)
Analysis of Hydrogen Cyanide Hyperfine Spectral Components towards Star Forming Cores
Open Astronomy, 2011 Although hydrogen cyanide has become quite a common molecular tracing species for a variety of astrophysical sources, it, however, exhibits dramatic non-LTE behaviour in its hyperfine line structure.
Loughnane R. M. +4 more
doaj +1 more source
Kinematic Distances to Molecular Clouds identified in the Galactic Ring Survey [PDF]
, 2009 Kinematic distances to 750 molecular clouds identified in the 13CO J=1-0 Boston University-Five College Radio Astronomy Observatory Galactic Ring Survey (BU-FCRAO GRS) are derived assuming the Clemens rotation curve of the Galaxy.
Alexis Johnson +43 more
core +3 more sources
The Astrophysical Journal, 1984 CO observations of the peculiar galaxy M82 have been made at 79 positions using the 14 m FCRAO telescope (HPBW = 50'') in order to obtain a fully sampled map of the central 2 kpc as well as the radial distribution of molecular gas out to 3 kpc along the major axis.
Young, JS, SCOVILLE, NZ
openaire +3 more sources
The approach to collapse of molecular clouds [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 The dense molecular cloud cores that form stars, like other self-gravitating objects, undergo bulk oscillations. Just at the point of gravitational instability, their fundamental oscillation mode has zero frequency. We study, using perturbation theory, the evolution of a spherical cloud that possesses such a frozen mode.
Jeffrey J. Yen, Steven W. Stahler
openaire +3 more sources
Neutral Atomic and Molecular Clouds and Star Formation in the Outer Carina Arm
The Astrophysical Journal, 2023 We present a comprehensive investigation of H i (super)clouds, molecular clouds (MCs), and star formation in the Carina spiral arm of the outer Galaxy.
Geumsook Park +3 more
doaj +1 more source
Turbulence decay and cloud core relaxation in molecular clouds [PDF]
, 2014 The turbulent motion within molecular clouds is a key factor controlling star formation. Turbulence supports molecular cloud cores from evolving to gravitational collapse and hence sets a lower bound on the size of molecular cloud cores in which star formation can occur.
arxiv +1 more source
Identification of Ambient Molecular Clouds Associated with Galactic Supernova Remnant IC443
, 2012 The Galactic supernova remnant (SNR) IC443 is one of the most studied core-collapse SNRs for its interaction with molecular clouds. However, the ambient molecular clouds with which IC443 is interacting have not been thoroughly studied and remain poorly ...
Abdo +29 more
core +1 more source
An Unbiased Survey for Molecular Clouds in the Southern Galactic Warp
, 2005 We have made an unbiased survey for molecular clouds in the Galactic Warp. This survey, covering an area of 56 square degrees at l = 252 deg to 266 deg and b = -5 deg to -1 deg, has revealed 70 molecular clouds, while only 6 clouds were previously known ...
Fukui, Y. +3 more
core +2 more sources
, 2010 We derive the physical properties of 580 molecular clouds based on their 12CO and 13CO line emission detected in the University of Massachusetts-Stony Brook (UMSB) and Galactic Ring surveys.
Allen +47 more
core +1 more source
Molecular dark matter in galaxies [PDF]
, 2006 Clouds containing molecular dark matter in quantities relevant for star formation may exist in minihaloes of the type of cold dark matter included in many cosmological simulations or in the regions of some galaxies extending far beyond their currently ...
Bell +25 more
core +3 more sources