Results 101 to 110 of about 834,499 (261)

High-Resolution Images of Diffuse Neutral Clouds in the Milky Way. I. Observations, Imaging, and Basic Cloud Properties

, 2015
A set of diffuse interstellar clouds in the inner Galaxy within a few hundred pc of the Galactic plane has been observed at an angular resolution of ~1 arcmin combining data from the NRAO Green Bank Telescope and the Very Large Array.
Dickey, John M., Lockman, Felix J., Pidopryhora, Yurii, Rupen, Michael P.   +3 more
core   +2 more sources

Copernicus observations of C I and CO in diffuse interstellar clouds [PDF]

Copernicus was used to observe absorption lines of C I in its ground state and excited fine structure levels and CO toward 29 stars. We use the C I data to infer densities and pressures within the observed clouds, and because our results are of higher ...
Jenkins, E. B., Jura, M., Loewenstein, M.   +2 more
core   +1 more source

The Spectral Energy Distribution of Self-gravitating Interstellar Clouds I. Spheres

, 2007
We derive the spectral energy distribution (SED) of dusty, isothermal, self gravitating, stable and spherical clouds externally heated by the ambient interstellar radiation field.
Bernard J. P., Bernard J. P., Bonnor W. B., Boulanger F., Chlewicki G., Ebert R., Gail H.-P., Jörg Fischera, Laureijs R. J., Lehtinen K., Lehtinen K., Lehtinen K., Lemke D., Mathis J. S., Mattila K., Michael A. Dopita, Ossenkopf V., Padoan P.   +17 more
core   +1 more source

Abundances of Chemical Elements in Open Star Clusters as Indicators of their Nature

Open Astronomy, 2015
Applying a compilled catalog, we find that the relative abundances of α-elements in open clusters and in field stars of the thin disk of the Galaxy show different dependencies on metallicity, age and parameters of their Galactic orbits.
Marsakov V. A., Gozha M. L., Koval’ V. V., Shpigel’ L. V.   +3 more
doaj   +1 more source

Evidence for Spatially Distinct Galactic Dust Populations

The Astrophysical Journal
We present an implementation of a Bayesian mixture model using Hamiltonian Monte Carlo techniques to search for the spatial separation of Galactic dust populations. Utilizing intensity measurements from the Planck High Frequency Instrument, we apply this
Corwin Shiu, Steven J. Benton, Jeffrey P. Filippini, Aurélien A. Fraisse, William C. Jones, Johanna M. Nagy, Ivan L. Padilla, Juan D. Soler   +7 more
doaj   +1 more source

The Fractal Dimension of Projected Clouds

, 2005
The interstellar medium seems to have an underlying fractal structure which can be characterized through its fractal dimension. However, interstellar clouds are observed as projected two-dimensional images, and the projection of a tri-dimensional fractal
Beech M., Beech M., Emilio J. Alfaro, Enrique Perez, Falgarone E., Hetem A., Larson R. B., Nestor Sanchez, Stutzki J., Vogelaar M. G. R.   +9 more
core   +1 more source

Organic Chemistry in the H2-bearing, CO-rich Interstellar Ice Layer at Temperatures Relevant to Dense Cloud Interiors

The Astrophysical Journal
Ice chemistry in the dense, cold interstellar medium (ISM) is probably responsible for the formation of interstellar complex organic molecules (COMs). Recent laboratory experiments performed at T ∼ 4 K have shown that irradiation of CO:N _2 ice samples ...
Rafael Martín-Doménech, Alexander DelFranco, Karin I. Öberg, Mahesh Rajappan   +3 more
doaj   +1 more source

The Transition from Atomic to Molecular Hydrogen in Interstellar Clouds: 21 cm Signature of the Evolution of Cold Atomic Hydrogen in Dense Clouds [PDF]

, 2006
P. F. Goldsmith, Di Li, Marko Krčo
openalex   +1 more source

Internal 1000 au Scale Structures of the R CrA Cluster-forming Cloud. I. Filamentary Structures

The Astrophysical Journal
We report Atacama Large Millimeter/submillimeter Array/Atacama Compact Array observations of a high-density region of the Corona Australis cloud forming a young star cluster, and the results of resolving internal structures. In addition to embedded Class
Kengo Tachihara, Naofumi Fukaya, Kazuki Tokuda, Yasumasa Yamasaki, Takeru Nishioka, Daisei Abe, Tsuyoshi Inoue, Naoto Harada, Ayumu Shoshi, Shingo Nozaki, Asako Sato, Mitsuki Omura, Kakeru Fujishiro, Misato Fukagawa, Masahiro N. Machida, Takahiro Kanai, Yumiko Oasa, Toshikazu Onishi, Kazuya Saigo, Yasuo Fukui   +19 more
doaj   +1 more source

Modelling the dust emission from dense interstellar clouds: disentangling the effects of radiative transfer and dust properties [PDF]

, 2012
N. Ysard, M. Juvela, K. Demyk, V. Guillet, A. Abergel, J. P. Bernard, J. Malinen, C. Meny, L. Montier, D Paradis, I. Ristorcelli, L Verstraete, N. Ysard, M. Juvela, K. Demyk, V. Guillet, A. Abergel, J. P. Bernard, J. Malinen, C. Meny, L. Montier, D Paradis, I. Ristorcelli, L Verstraete   +23 more
openalex   +1 more source