Interstellar gas abundances from rocket observations of ultraviolet absorption lines.

1973 ◽  
Vol 181 ◽  
pp. 761 ◽  
Author(s):  
E. B. Jenkins
Keyword(s):  
Ultraviolet Absorption ◽  
Absorption Lines ◽  
Interstellar Gas

A Discussion on astronomy in the ultraviolet - Observations of the interstellar gas with the Copernicus satellite

1975 ◽  
Vol 279 (1289) ◽  
pp. 299-302
Keyword(s):  
Absorption Lines ◽  
Heavy Elements ◽  
Interstellar Gas ◽  
Far Ultraviolet ◽  
Ultraviolet Observations

Recent results are summarized on interstellar H I, D I, H 2 , HD, and heavy elements whose absorption lines have been measured in the far ultraviolet.

Ultraviolet absorption by interstellar gas near 30 Doradus

1980 ◽  
Vol 236 ◽  
pp. 769 ◽  
Author(s):  
K. S. de Boer ◽  
J. Koornneef ◽  
B. D. Savage
Keyword(s):  
Ultraviolet Absorption ◽  
Interstellar Gas ◽  
30 Doradus

scholarly journals Ultraviolet Absorption Line Studies of Halo Gas

1997 ◽  
Vol 166 ◽  
pp. 433-441
Author(s):  
Klaas S. de Boer
Keyword(s):  
Absorption Line ◽  
Galactic Disk ◽  
Ultraviolet Absorption ◽  
Uv Absorption ◽  
Absorption Lines ◽  
The Status ◽  
Halo Gas

AbstractThe status of halo studies using UV absorption lines is assessed. Sin absorption is essentially only seen from gas with z ≤ 1 kpc, and shows a modest flow toward the galactic disk. CIV shows diffuse absorption in general only from gas with z ≥ 1 kpc with predominantly negative velocities. Three exceptional cases of gas showing CIV absorption without absorption by neutral components are discussed. Outflowing gas has not been detected thusfar.

A Discussion on astronomy in the ultraviolet - Interstellar molecular absorption lines

1975 ◽  
Vol 279 (1289) ◽  
pp. 323-329 ◽  
Keyword(s):  
Molecular Hydrogen ◽  
Ultraviolet Absorption ◽  
Absorption Lines ◽  
Early Type ◽  
Molecular Absorption ◽  
Interstellar Molecules ◽  
Additional Absorption ◽  
Interstellar Clouds ◽  
Early Type Stars

The ultraviolet absorption lines produced in interstellar clouds through the absorption of radiation from early type stars by molecular hydrogen H 2 may be analysed to yield the particle densities and ultraviolet fluxes in the absorbing regions and the absorption by HD may be analysed to determine the proton densities and the ionizing fluxes. The interpretation carries implications concerning the formation of other interstellar molecules, which may be the source of additional absorption lines.

scholarly journals Probing the Baryon Cycle in Galaxy Outskirts

2016 ◽  
Vol 11 (S321) ◽  
pp. 53-60
Author(s):  
Romeel Davé
Keyword(s):  
Galaxy Evolution ◽  
Cosmic Time ◽  
Ultraviolet Absorption ◽  
Absorption Lines ◽  
Gas Content ◽  
Molecular Gas ◽  
Intergalactic Gas ◽  
Galactic Outflows ◽  
Hydrodynamical Simulations ◽  
Analytic Models

AbstractGalaxies are born and grow within a cosmic ecosystem, in which they receive material from surrounding intergalactic gas via gravitationally-driven inflows and expel material via powerful galactic outflows. These processes, collectively referred to as the baryon cycle, are increasingly believed to govern galaxy growth over cosmic time. I discuss new insights on the baryon cycle using analytic models and hydrodynamical simulations of galaxy evolution, particularly emphasizing how galaxy outskirts are the prime locale within which to observe these processes in action by examining observational tracers such as rest-ultraviolet absorption lines and the neutral and molecular gas content of galaxies.

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