Results 71 to 80 of about 4,494 (233)

INTERSTELLAR CLOUDS BY SEARCHLIGHT

open access: yesThe Astronomical Journal, 2009
Interpretation of high-resolution observations of absorption by interstellar clouds of radiation from extragalactic sources should include the effect of the Earth's motion with respect to the source. High-resolution H I absorption profiles that are not heavily blended have been published for eight sources.
openaire   +1 more source

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

open access: yesThe 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   +3 more
doaj   +1 more source

Photodissociation of OH in Interstellar Clouds

open access: yesThe Astrophysical Journal, 1984
Calculations are presented of the lifetime of OH against photodissociation by the interstellar radiation field as a function of depth into interstellar clouds containing grains of various scattering properties. The effectiveness of the different photodissociation channels changes with depth into a cloud. Absorption into the repulsive - state is usually
Dishoeck, E.F. van, Dalgarno, A.
openaire   +3 more sources

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

open access: yesThe 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   +19 more
doaj   +1 more source

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

open access: bronze, 1998
Marco Spaans   +4 more
openalex   +1 more source

Diffuse interstellar clouds associated with dark clouds

open access: yesThe Astrophysical Journal, 1982
Measurements of CH emission at 9 cm toward the bright stars ..cap alpha.. Cam and kappa Cas and from dark clouds near the stars reveal an association between diffuse clouds and dark clouds. Here the term diffuse clouds refers to clouds seen in optical absorption; the term dark clouds refers to opaque regions on the Palomar Sky Survey observed through ...
S. R. Federman, R. F. Willson
openaire   +1 more source

Earth's Mesosphere During Possible Encounters With Massive Interstellar Clouds 2 and 7 Million Years Ago

open access: yesGeophysical Research Letters
Our solar system's path has recently been shown to potentially intersect dense interstellar clouds 2 and 7 million years ago: the Local Lynx of Cold Cloud and the edge of the Local Bubble.
Jesse A. Miller   +4 more
doaj   +1 more source

Filamentary Network and Magnetic Field Structures Revealed with BISTRO in the High-mass Star-forming Region NGC 2264: Global Properties and Local Magnetogravitational Configurations

open access: yesThe Astrophysical Journal
We report 850 μ m continuum polarization observations toward the filamentary high-mass star-forming region NGC 2264, taken as part of the B -fields In STar forming Regions Observations large program on the James Clerk Maxwell Telescope. These data reveal
Jia-Wei Wang   +156 more
doaj   +1 more source

On the Stability of Interstellar Neutral Hydrogen Clouds at Large Z-heights

open access: yesThe Astrophysical Journal
Galactic neutral hydrogen (H i ) data drawn from several large-scale surveys have been used to study 32 small clouds found between Galactic longitudes 70° and 140° and latitudes −20° and −45°.
G. L. Verschuur
doaj   +1 more source

Home - About - Disclaimer - Privacy