Results 101 to 110 of about 4,621,719 (221)

Effects of magnetic fields on the cosmic-ray ionization of molecular cloud cores [PDF]

, 2011
Context. Low-energy cosmic rays are the dominant source of ionization for molecular cloud cores. The ionization fraction, in tur n, controls the coupling of the magnetic field to the gas and henc e the dynamical evolution of the cores. Aims.
M. Padovani, Daniele Galli Institut de Ciencies de l'Espai, Spain., Inaf - Arcetri, Italy.   +4 more
semanticscholar   +1 more source

Biogenic, urban, and wildfire influences on the molecular composition of dissolved organic compounds in cloud water

, 2017
. Organic aerosol formation and transformation occurs within aqueous aerosol and cloud droplets, yet little is known about the composition of high molecular weight organic compounds in cloud water. Cloud water samples collected at Whiteface Mountain, New
Ryan D. Cook, Ying-Hsuan Lin, Zhuoyu Peng, Eric J. Boone, R. Chu, James Dukett, M. Gunsch, Wuliang Zhang, N. Tolić, A. Laskin, K. Pratt   +10 more
semanticscholar   +1 more source

SUPERNOVA-ENHANCED COSMIC-RAY IONIZATION AND INDUCED CHEMISTRY IN A MOLECULAR CLOUD OF W51C [PDF]

, 2011
Cosmic rays (CRs) pervade the Galaxy and are thought to be accelerated in supernova shocks. The interaction of CRs with dense interstellar matter has two important effects: (1) high-energy (≳1 GeV) protons produce γ-rays by π0-meson decay and (2) low ...
C. Ceccarelli, P. Hily-Blant, T. Montmerle, T. Montmerle, G. Dubus, Y. Gallant, A. Fiasson   +6 more
semanticscholar   +1 more source

Sequential Star Formation in RCW 34: A Spectroscopic Census of the Stellar Content of High-mass Star-forming Regions

, 2010
We present VLT/SINFONI integral field spectroscopy of RCW 34 along with Spitzer/IRAC photometry of the surroundings. RCW 34 consists of three different regions.
A. Bik, A. de Koter, A. Lenorzer, A. Stolte, Allen, Aller, Alvarez, Bik, Blum, Bonnet, Braz, Bronfman, Caswell, Caswell, Ch. Waelkens, Chan, Churchwell, Cohen, Cushing, Da Rio, DeRose, E. Churchwell, E. Puga, Elmegreen, F. Comerón, Fazio, Feldt, Garay, Gum, H. Beuther, H. Linz, Hanson, Hanson, Hanson, Heydari-Malayeri, Koornneef, Kurucz, L. Kaper, L.B.F.M. Waters, Liseau, Luhman, M. B. N. Kouwenhoven, M. Horrobin, M. van den Ancker, Makovoz, Megeath, Monet, Murphy, Muzerolle, O'Dell, Parker, Puga, Rayner, Rodgers, Rodríguez, S. Kurtz, Schreiber, Siess, Stahler, Stecklum, Storey, T. Vasyunina, Tan, Th. Henning, Thomas, van den Ancker, W. F. Thi, Walsh, Watson, White, Whitney, Williams, Winston, Yamaguchi, Zhang, Zinchenko   +75 more
core   +1 more source

GROMACS 4.5: a high-throughput and highly parallel open source molecular simulation toolkit

Bioinform., 2013
MOTIVATION Molecular simulation has historically been a low-throughput technique, but faster computers and increasing amounts of genomic and structural data are changing this by enabling large-scale automated simulation of, for instance, many conformers ...
S. Pronk, Szilárd Páll, R. Schulz, Per Larsson, P. Bjelkmar, R. Apostolov, Michael R. Shirts, Jeremy C. Smith, P. Kasson, D. Spoel, B. Hess, E. Lindahl   +11 more
semanticscholar   +1 more source

Probing the evolution of molecular cloud structure II. From chaos to confinement [PDF]

, 2011
We present an analysis of the large-scale molecular cloud structure and of the stability of clumpy structures in nearby molecular clouds. In our recent work, we identified a structural transition in molecular clouds by studying the probability ...
J. Kainulainen, H. Beuther, R. Banerjee, C. Federrath, T. Henning   +4 more
semanticscholar   +1 more source

High altitude molecular clouds [PDF]

The Astrophysical Journal, 1994
A population of molecular clouds with a significantly greater scale height than that of Giant Molecular Clouds has been identified by examining maps of the latitude distribution of the $^{12}CO(1-0)$ emission in the first quadrant of the Galaxy. These clouds are found by identifying emission more than 2.6 times the scale-height away from the galactic ...
openaire   +3 more sources

Distances to nearby molecular clouds and star forming regions.III. Localizing extinction jumps with a Hipparcos calibration of 2mass photometry [PDF]

, 2010
We want to estimate the distance to molecular clouds in the solar vicinity in a statistically precise way. Clouds are recognized as extinction discontinuities. The extinction is estimated from the $(H-K) \ vs.
Knude, Jens
core   +1 more source

Formation of Turbulent and Magnetized Molecular Clouds via Accretion Flows of HI Clouds

, 2012
Using 3D MHD simulation with the effects of radiative cooling/heating, chemical reactions, and thermal conduction, we investigate the formation of molecular cloud in the ISM.
Blitz, Crutcher, Dawson, de Jong, Dib, Fukui, Fukui, Glover, Hansen, Hartmann, Heiles, Heiles, Heitsch, Heitsch, Heitsch, Hennebelle, Hennebelle, Hennebelle, Hennebelle, Heyer, Hosokawa, Ikeda, Ikeda, Inoue, Inoue, Inoue, Inoue, Inoue, Inoue, Inoue, Kamata, Kawamura, Kevlahan, Koyama, Koyama, Koyama, Kramer, Kudoh, Larson, Lee, Li, Machida, Nelson, Shu-ichiro Inutsuka, Spitzer, Stone, Stone, Tsuyoshi Inoue, Vázquez-Semadeni, Wolfire, Yoshida   +50 more
core   +1 more source

A scaling relation for the molecular cloud lifetime in Milky Way-like galaxies. [PDF]

Mon Not R Astron Soc, 2021
Jeffreson SMR, Keller BW, Winter AJ, Chevance M, Kruijssen JMD, Krumholz MR, Fujimoto Y.   +6 more
europepmc   +1 more source