Results 1 to 10 of about 296 (135)
THE OUTER DISKS OF DWARF IRREGULAR GALAXIES [PDF]
The Astronomical Journal, 2011 AJ, in ...
Hunter, Deidre A. +7 more
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Supernova Remnants in the Irregular Galaxy NGC 4449
The Astrophysical Journal, 2023 Abstract The nearby irregular galaxy NGC 4449 has a star formation rate of ∼0.4M ☉ yr−1 and should host of order 70 supernova remnants (SNRs) younger than 20,000 yr, a typical age for SNRs expanding into an interstellar medium (ISM) with a density of 1 cm−3 to reach the radiative phase.
P. Frank Winkler +2 more
openaire +3 more sources
On the oxygen abundance deficiency in irregular galaxies [PDF]
New Astronomy Reviews, 2000 8 pages, 7 figures, accepted for publication in Astronomy and ...
Pilyugin, L. S., Ferrini, F.
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Magnetic Fields in Irregular Galaxies [PDF]
Proceedings of the International Astronomical Union, 2008 Magnetic fields are an important component of the interstellar medium, especially in low-mass galaxies like irregulars where the magnetic pressure may be significant. However, few irregular galaxies have observed magnetic field structures. Using the VLA, the GBT, and the ATCA, we have observed several irregular galaxies in the radio continuum to ...
Kepley, Amanda A. +6 more
openaire +4 more sources
Stellar structure of irregular galaxies: Edge-on galaxies [PDF]
Astronomy Reports, 2006 13 pages, 7 ...
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Lopsidedness in dwarf irregular galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2000 We quantify the amplitude of the lopsidedness, the azimuthal angular asymmetry index, and the concentration of star forming regions, as represented by the distribution of the H$α$ emission, in a sample of 78 late-type irregular galaxies. We bin the observed galaxies in two groups representing blue compact galaxies (BCDs) and low surface brightness ...
Heller, Ana B. +4 more
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GALACTIC WINDS IN IRREGULAR STARBURST GALAXIES [PDF]
, 2001 In this paper we present some results concerning the study of the development of galactic winds in blue compact galaxies. In particular, we model a situation very similar to that of the galaxy IZw18, the most metal poor and unevolved galaxy known locally.
Matteucci, F., Recchi, S.
openaire +2 more sources
The CO contents of dwarf irregular galaxies
The Astrophysical Journal, 1987 A search has been conducted for CO in 16 dwarf irregular galaxies selected to span a wide range of infrared luminosity and color. CO was detected in six dwarf galaxies spanning the entire range in optical color and IR luminosity. The dwarf galaxies extend by three orders of magnitude in luminosity the correlation between IR and CO luminosities found ...
TACCONI, LJ, Young, JS
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Investigation on tunnel stability considering pipe‐roof support with transparent soil technology
Deep Underground Science and Engineering, EarlyView.This study integrates transparent soil technology, 3D reconstruction and numerical simulation to captures the full‐field deformation of shield tunnel instability. Results demonstrate that pipe‐roof support enhances stability via the “soil‐arching barrier effect,” effectively restraining failure wedge development by extending stress transfer paths ...
Zhi Jia +4 more
wiley +1 more source
‘A Sort of Armed Argument’: Ireland's Civil War of Words
History, EarlyView.Abstract This article sets out to contribute to the study of the languages of European civil wars through outlining and analysing the deployment of language as a weapon by the opposing sides of the Irish independence movement that split over the terms of the Anglo‐Irish Treaty of December 1921.
DONAL Ó DRISCEOIL
wiley +1 more source