Results 61 to 70 of about 1,698,518 (186)

On the Existence, Rareness, and Uniqueness of Quenched H i-rich Galaxies in the Local Universe

open access: yesThe Astrophysical Journal
Using data from ALFALFA, xGASS, H i -MaNGA, and the Sloan Digital Sky Survey (SDSS), we identify a sample of 47 “red but H i -rich” (RR) galaxies with near-UV (NUV) − r > 5 and unusually high H i -to-stellar mass ratios. We compare the optical properties
Xiao Li   +5 more
doaj   +1 more source

Measurements of Magnetic Fields in Interstellar Clouds of Neutral Hydrogen

open access: yesThe Astrophysical Journal, 1969
A new series of measurements of the Zeeman splitting of 21-cm spectral lines has revealed strong (> 10−5 G) magnetic field effects in several neutral hydrogen clouds in the direction of HII regions. Low limits have been set to the line-of-sight field components in six other regions of space.
openaire   +1 more source

A Neutral Hydrogen Absorption Study of Cold Gas in the Outskirts of the Magellanic Clouds Using the GASKAP-H i Survey

open access: yesThe Astronomical Journal
Cold neutral hydrogen (H i ) is a crucial precursor for molecular gas formation and can be studied via H i absorption. This study investigates H i absorption in low column density regions of the Small and Large Magellanic Clouds (SMC and LMC) using the ...
Hongxing Chen   +20 more
doaj   +1 more source

THE MATHEMATICAL MODELING OF THE PROCESS OF NEUTRALIZATION CLOUDS OF HYDROGEN CYANIDE

open access: yesScience and Transport Progress, 2008
A computer model to calculate the neutralization of НСN cloud is proposed. The model is based on the numerical integration of the 3-D gradient transport model. The results of numerical experiment are presented.
openaire   +2 more sources

Observational Predictions for the Survival of Atomic Hydrogen in Simulated Fornax-like Galaxy Clusters

open access: yesThe Astrophysical Journal
The presence of dense, neutral hydrogen clouds in the hot, diffuse intragroup and intracluster (IC) medium is an important clue to the physical processes controlling the survival of cold gas and sheds light on cosmological baryon flows in massive halos ...
Avinash Chaturvedi   +6 more
doaj   +1 more source

Origin of the Multiphase Interstellar Medium: The Effects of Turbulence and Magnetic Field

open access: yesThe Astrophysical Journal
The interstellar medium (ISM) consists of multiphase gas, including the warm neutral medium (WNM), the unstable neutral medium (UNM), and the cold neutral medium (CNM).
Yue Hu
doaj   +1 more source

Characterizing 3D Magnetic Fields and Turbulence in H I Clouds

open access: yesThe Astrophysical Journal
3D Galactic magnetic fields are critical for understanding the interstellar medium, Galactic foreground polarization, and the propagation of ultra-high-energy cosmic rays.
Yue Hu
doaj   +1 more source

Empirical calibration of Na I D and other absorption lines as tracers of high-redshift neutral outflows

open access: yesAstronomy & Astrophysics
Recent JWST observations of massive galaxies at z > 2 detect blueshifted absorption in Na I D and other resonant absorption lines, indicative of strong gas outflows in the neutral phase.
Moretti Lorenzo   +7 more
doaj   +1 more source

On The Origin Of Neutral Hydrogen Clouds In Nearby Galaxy Groups: The Role Of Galaxy Interactions

open access: yes, 2010
This thesis addresses the origin of the High Velocity Clouds (HVCs) observed around the Milky Way and other nearby galaxies. Such clouds are likely created through a combination of galactic fountains, galaxy interactions, dark matter substructure, and ...
Chynoweth, Katie Mae
core  

INJECTION OF HYDROGEN INTO HIGH PRESSURE NATURAL GAS GRIDS: INVESTIGATION OF THE IMPACT ON MATERIALS AND EQUIPMENT AT RELEVANT ENVIRONMENT

open access: yes, 2022
Publisher Copyright: © 2022 Proceedings of WHEC 2022 - 23rd World Hydrogen Energy Conference: Bridging Continents by H2. All rights reserved.This work addresses the potential of hydrogen injection into the transmission high pressure natural gas grid as ...
Madina, Virginia   +5 more
core   +1 more source

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