Results 91 to 100 of about 1,698,518 (186)
The Effect of Radiation and Supernovae Feedback on LyC Escape in Local Star-forming Galaxies
The Astrophysical JournalFeedback is widely recognized as an essential condition for Lyman continuum (LyC) escape in star-forming galaxies. However, the mechanisms by which galactic outflows clear neutral gas and dust remain unclear.
Cody A. Carr +29 more
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Effect of a baffle divertor structure on neutral hydrogen and helium transport in the Large Helical Device [PDF]
Control of the peripheral plasma density is one of urgent tasks for improving the plasma performance in the Large Helical Device. Test modules with a baffle divertor structure have been installed in the inboard side of the torus for controlling the ...
LHD, Experiment Group +6 more
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The Qz5 Survey. I. How the H i Mass Density of the Universe Evolves with Cosmic Time
The Astrophysical JournalWe report that the neutral hydrogen (H i ) mass density of the Universe ( ρ _H _i ) increases with cosmic time since z ∼ 5, peaks at z ∼ 3, and then decreases toward z ∼ 0. This is the first result of Qz5, our spectroscopic survey of 63 quasars at z ≳
Grecco A. Oyarzún +11 more
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The formation of molecular hydrogen in the interstellar medium [PDF]
, 2010 H2 is the most abundant molecule in the interstellar medium and forms on the surface of interstellar dust grains. Laboratory studies have been conducted of HD formation on a dust grain analogue, which is a highly-oriented pyrolytic graphite surface ...
Islam, F.
core
The Astrophysical JournalVinylacetylene (C _4 H _4 ; CH _2 =CH–C≡CH) represents a key molecular building block in the hydrogen abstraction–vinylacetylene addition pathway leading barrierlessly to polycyclic aromatic hydrocarbons (PAHs) via benzene ring annulation.
Surajit Metya +5 more
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Galaxy Interactions and Hi Clouds in Groups
, 2012 We present GBT neutral hydrogen observations of two nearby galaxy groups. The M 81/M 82 and NGC 2403 groups represent opposite ends of the range in intensity of galaxy interactions, and have remarkably different properties in Hi. We have discovered 5 new
K.M. Chynoweth +3 more
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, 1997 High-velocity clouds (HVCs) consist of neutral hydrogen (HI) at velocities incompatible with a simple model of differential galactic rotation; in practice one uses \v(LSR)\ greater than or equal to 90 km/s to define HVCs.
vanWoerden, H, Wakker, BP
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A Low Resolution Hydrogen-line Survey of the Magellanic System. II. Interpretation of Results
, 1963 A low resolution (202) survey of the neutral hydrogen in the Magellanic Clouds has produced two important additions to our knowledge of the system. (1) A bridge of gas between the Small and Large Cloud has been mapped.
JV Hindman, FJ Kerr, RX McGee
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What Is the True H i Gas Content in Massive Quiescent Galaxies in the Local Universe?
The Astrophysical JournalWhile massive quiescent galaxies are known to be poor in atomic hydrogen (H i ), their true H i content remains poorly constrained due to the limited sensitivity and morphological biases of existing surveys.
Xiao Li +5 more
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, 2017 In this paper we present calculated fractional abundances in dense interstellar clouds for selected atomic and molecular species using three different homogeneous, pseudo-time-dependent models discussed by Bettens, Lee, & Herbst (1995): the new ...
R. P.A. Bettens, E. Herbst, H.-H. Lee
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