Results 31 to 40 of about 1,698,518 (186)
H i in Molecular Clouds: Irradiation by FUV Plus Cosmic Rays
The Astrophysical Journal, 2023 We extend the analytic theory presented by Sternberg et al. and Bialy & Sternberg for the production of atomic hydrogen (H i ) via far-ultraviolet (FUV) photodissociation at the boundaries of dense interstellar molecular (H _2 ) clouds to also include ...
Amiel Sternberg +2 more
doaj +1 more source
Can Warm Neutral Medium Survive inside Molecular Clouds?
, 2006 International audienceRecent high-resolution numerical simulations have suggested that the interstellar atomic hydrogen clouds have a complex two-phase structure.
Hennebelle, Patrick +1 more
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Neutral hydrogen in the local universe [PDF]
, 2008 We revisit the composition of neutral hydrogen, i.e. atomic (HI) and molecular (H2), in the local Universe, with focus on the H2-to-HI mass ratio R in various galaxies and the H2-mass function (MF).
Obreschkow, D. +3 more
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Observations of the 21 cm Line from the Magellanic Clouds
, 1954 A survey has been made of the 21 cm line from neutral interstellar hydrogen in the Magellanic Clouds. These are the first observations of this radiation from an extragalactic source.
FJ Kerr, JV Hindman, BJ Robinson
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Atomic and Molecular Gas in the Milky Way. I. Structure Decomposition
The Astrophysical JournalWe present GDCluster, a fully automated algorithm for decomposing a spectral-line data cube of interstellar gas into coherent structures. Assuming a multi-Gaussian nature of observed spectra, GDCluster employs and augments the derivative spectroscopy ...
Xin Liu, Fujun Du
doaj +1 more source
10. Radio observations of interstellar neutral hydrogen clouds [PDF]
Symposium - International Astronomical Union, 1957 The detailed relationship between optical interstellar absorption lines and 21-cm. observations is investigated in this paper.Dr Guido Münch, of the Mount Wilson and Palomar Observatories, provided the list of six intermediate-latitude stars shown in Table 1. The spectra of these stars all show complex absorption lines due to interstellar Ca 11. The 21-
openaire +1 more source
The importance of OH radical–neutral low temperature tunnelling reactions in interstellar clouds using a new model [PDF]
, 2015 Recent laboratory experiments using a pulsed Laval nozzle apparatus have shown that reactions between a neutral molecule and the radical OH can occur efficiently at low temperatures despite activation energy barriers if there is a hydrogen-bonded complex
Acharyya, K +5 more
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FEASTS and MHONGOOSE: H I Column Density Distribution at z = 0 for NHI > 1017.8 cm−2
The Astrophysical JournalWe present the first z = 0 H I column density distribution function, f ( N _HI ), extending down to $\mathrm{log}({N}_{{\rm{HI}}}/{{\rm{cm}}}^{-2})=17.8$ . This was derived from high-sensitivity 21 cm emission-line imaging at ∼1 kpc resolution.
Jing Wang +26 more
doaj +1 more source
Investigation into Triggered Star Formation by Radiative Driven Implosion [PDF]
, 2016 When massive stars form, they emit strong, hydrogen ionising radiation fields into their molecular cloud environment, forming HII regions. This is believed to be capable of inducing effects which can trigger further star formation through a process known
Kinnear, Timothy Michael
core
, 2022 Publisher Copyright: © 2022 Proceedings of WHEC 2022 - 23rd World Hydrogen Energy Conference: Bridging Continents by H2. All rights reserved.H2BASQUE is a strategic project funded by the Basque Government for developing innovative technologies (and their
Alcaide, Francisco +7 more
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