Results 31 to 40 of about 137,804 (303)

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, D. A. Williams, Draine, Ellison, Giovanelli, Helfer, Israel, Kennicutt, Le Teuff, Liszt, Lundgren, Madden, Madden, Noordermeer, Pfenniger, S. Viti, Sargent, Smoker, Sternberg, T. A. Bell, T. W. Hartquist, Walker, Williams, Wilson, Wolfire, Zwaan   +25 more
core   +3 more sources

ON THE THEORY OF THE OF-CENTRAL EXPLOSION IN A SPHERICALLY STRATIFIED MEDIUM

Radio Physics and Radio Astronomy, 2015
Аn analytical solution for a spherically stratified medium is constructed on the strength of an earlier obtained exact solution of Kompaneets equation for the shock front in a planar stratified medium with the density changing as the hyperbolic tangent ...
G. V. Donets
doaj   +1 more source

Physical Properties and Galactic Distribution of Molecular Clouds identified in the Galactic Ring Survey

, 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, Anderson, Bacmann, Benjamin, Benjamin, Bernard, Bloemen, Boulanger, Elmegreen, Falgarone, Federrath, Glover, Goldsmith, Gordon, Heitsch, Heyer, Heyer, Heyer, Jackson, James M. Jackson, Jill Rathborne, Julia Roman-Duval, Kerr, Klessen, Larson, Mandelbrot, Mark Heyer, Oort, Quireza, Rathborne, Rathborne, Reid, Robert Simon, Rohlfs, Roman-Duval, Scalo, Scalo, Simon, Sodroski, Strong, Tasker, Urquhart, Wakker, Whittet, Williams, Williams, Wolfire, Wolfire   +47 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, Cohen, Davies, F. Boulanger, F. P. Israel, Filipovic, G. Garay, Haynes, Henize, Heydari-Malayeri, Heydari-Malayeri, Israel, Israel, Israel, J. Lequeux, Jansen, Johansson, Kutner, L. E. B. Johansson, L.-A. Nyman, Lucke, M. L. Kutner, M. Rubio, Meaburn, Meaburn, Mizuno, Parker, R. S. Booth, Rosado, Rubio, Th. de Graauw, Westerlund, Xu, Yamaguchi   +33 more
core   +5 more sources

Chemistry of Molecular Clouds [PDF]

International 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   +1 more source

Molecular clouds in M82

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   +2 more sources

Characterizing the 3D Structure of Molecular Cloud Envelopes in the Cloud Factory Simulations

The Astrophysical Journal
We leverage recent numerical simulations of highly resolved star-forming regions in a Milky Way–like galaxy to explore the nature of extended gaseous envelopes around molecular clouds.
Elijah Mullens, Catherine Zucker, Claire E. Murray, Rowan Smith   +3 more
doaj   +1 more source

The Role of Magnetic Field in Molecular Cloud Formation and Evolution

Frontiers in Astronomy and Space Sciences, 2019
We review the role that magnetic field may have on the formation and evolution of molecular clouds. After a brief presentation and main assumptions leading to ideal MHD equations, their most important correction, namely the ion-neutral drift is described.
Patrick Hennebelle, Patrick Hennebelle, Shu-ichiro Inutsuka   +2 more
doaj   +1 more source

Molecular Clouds in the Galactic Plane from l = [59.°75, 74.°75] and b = [−5.°25, +5.°25]

The Astrophysical Journal Supplement Series, 2023
In this paper we present the distribution of molecular gas in the Milky Way Galactic plane from l = [59.75, 74.75]° and b = [−5.25, +5.25]°, using the MWISP ^12 CO/ ^13 CO/C ^18 O emission-line data.
Chunxue Li, Hongchi Wang, Yuehui Ma, Lianghao Lin, Yang Su, Chong Li, Yan Sun, Xin Zhou, Ji Yang   +8 more
doaj   +1 more source

Molecular Clouds: Comet Factories? [PDF]

International Astronomical Union Colloquium, 1985
AbstractRecent discoveries seem to indicate a catastrophic history of terrestrial evolution, explicable in terms of Oort cloud disturbance by molecular clouds in the Galactic disc. The problem of Oort cloud replenishment thus assumes considerable significance and reasons are given for supposing comet exchange takes place during actual penetration of ...
openaire   +1 more source