Results 81 to 90 of about 238,168 (251)
Imprints of Molecular Clouds in Radio Continuum Images [PDF]
, 2012 We show radio continuum images of several molecular complexes in the inner Galaxy and report the presence of dark features that coincide with dense molecular clouds. Unlike infrared dark clouds, these features which we call "radio dark clouds" are produced by a deficiency in radio continuum emission from molecular clouds that are embedded in a bath of ...
arxiv +1 more source
, 2010 We aim to study the properties of the dense molecular gas towards the inner few 100 pc of four nearby starburst galaxies dominated both by photo dissociation regions (M82) and large-scale shocks (NGC253, IC342 and Maffei2), and to relate the chemical and
Aladro, Rebeca +4 more
core +1 more source
Evolving Molecular Cloud Structure and the Column Density Probability Distribution Function [PDF]
, 2014 The structure of molecular clouds can be characterized with the probability distribution function (PDF) of the mass surface density. In particular, the properties of the distribution can reveal the nature of the turbulence and star formation present inside the molecular cloud.
arxiv +1 more source
Molecular Clouds as Cosmic Ray Laboratories
, 2011 We will here discuss how the gamma-ray emission from molecular clouds can be used to probe the cosmic ray flux in distant regions of the Galaxy and to constrain the highly unknown cosmic ray diffusion coefficient. In particular we will discuss the GeV to
Aharonian, Felix A. +11 more
core +1 more source
The Astrophysical Journal, 2023 We present the results of ALMA-ACA 7 m array observations in ^12 CO( J = 2–1), ^13 CO( J = 2–1), and C ^18 O( J = 2–1) line emission toward the molecular-gas disk in the Local Group spiral galaxy M33 at an angular resolution of 7.″31 × 6.″50 (30 × 26 pc).
Kazuyuki Muraoka +21 more
doaj +1 more source
The Universality of Turbulence in Galactic Molecular Clouds [PDF]
Astrophys.J. 615 (2004) L45-L48, 2004 The universality of interstellar turbulence is examined from observed structure functions of 27 giant molecular clouds and Monte Carlo modeling. We show that the structure functions, dv=v0 l^gamma, derived from wide field imaging of CO J=1-0 emission from individual clouds are described by a narrow range in the scaling exponent, gamma, and the scaling ...
arxiv +1 more source
The Formation and Destruction of Molecular Clouds and Galactic Star Formation
, 2015 We describe an overall picture of galactic-scale star formation. Recent high-resolution magneto-hydrodynamical simulations of two-fluid dynamics with cooling/heating and thermal conduction have shown that the formation of molecular clouds requires ...
Kazunari Iwasaki +4 more
core +1 more source
Results of the ESO-SEST Key Programme on CO in the Magellanic Clouds. IX. The giant LMC HII region complex N11 [PDF]
, 2002 We present maps and a catalogue containing the J=1-0 12CO parameters of 29 individual molecular clouds in the second-brightest LMC star formation complex, N11.
Caldwell +33 more
core +5 more sources
Molecular Clouds: Formation and Disruption [PDF]
Astrophysics and Space Science, 2004 13 pages, 1 jpg figure, 1 eps figure. For publication in a proceedings issue of Astrophysics & Space Science recording the conference "From Observations to Self-Consistent Modeling of the Interstellar Medium", held in Porto ...
openaire +3 more sources
Variation in XCO Factor in N55 Region
UniverseThe XCO factor is defined as XCO=N(H2)/W12CO. It is useful for estimating cloud mass. However, there is only limited research on how the XCO factor varies within a single cloud.
Qiang Li +3 more
doaj +1 more source