Results 51 to 60 of about 3,905 (166)

The Effect of an Inert Solid Reservoir on Molecular Abundances in Dense Interstellar Clouds

Open Astronomy, 2012
The question, what is the role of freeze-out of chemical species in determining the molecular abundances in the interstellar gas is a matter of debate.
Kalvāns Juris, Shmeld Ivar
doaj   +1 more source

A study of X-ray point sources in Heiles Clouds 1 and 2

Acta Polytechnica
Star formation takes place in the coldest parts of molecular clouds, beginning in the densest, collapsing regions of filaments. As pre-main sequence stars are luminous X-ray emitters, X-ray point sources can serve as effective tracers of YSOs.
Nóra Varga, András Péter Joó, Bendegúz Koncz   +2 more
doaj   +1 more source

Cosmic-Ray Induced Diffusion in Interstellar Ices

Open Astronomy, 2014
Cosmic rays are able to heat interstellar dust grains. This may enhance molecule mobility in icy mantles that have accumulated on the grains in dark cloud cores.
Kalvāns Juris
doaj   +1 more source

Molekul antar Bintang dan Struktur Galaksi

Journal of Mathematical and Fundamental Sciences, 2019
Ringkasan. Tulisan ini merupakan tinjauan ulang penemuan molekul di dalam ruang antarbintang, kemungkinan pembentukannya dan kaitannya dengan struktur Galaktika. Abstract.
Bambang Hidajat
doaj  

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

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

Anomalous Neutral Hydrogen Column Densities in Local Interstellar Medium Clouds

The Astrophysical Journal
Analysis of high-resolution spectra of the hydrogen and deuterium Ly α lines provides measurements of interstellar neutral hydrogen column densities N (H i ) to 113 stars within 50 pc of the Sun. Plots of N (H i ) versus distance through the LIC, G, Mic,
Jeffrey L. Linsky, Seth Redfield
doaj   +1 more source

Why HOC[TSUP]+[/TSUP] Is Detectable in Interstellar Clouds: The Rate of the Reaction between HOC[TSUP]+[/TSUP] and H[TINF]2[/TINF] [PDF]

, 1996
Eric Herbst, David E. Woon
openalex   +1 more source

Search for Interstellar Water in the Translucent Molecular Cloud toward HD 154368 [PDF]

, 1998
Marco Spaans, David A. Neufeld, S. Lepp, Gary J. Melnick, J. R. Stauffer   +4 more
openalex   +1 more source