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Is the Galaxy a barred spiral?
The Astronomical Journal, 1957 Hugh M. Johnson
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The Visibility of Galactic Bars and Spiral Structure At High Redshifts [PDF]
, 2002 We investigate the visibility of galactic bars and spiral structure in the distant Universe by artificially redshifting 101 B-band CCD images of local spiral galaxies from the Ohio State University Bright Spiral Galaxy Survey. Our artificially redshifted
Abraham R. G. +9 more
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Barred spiral galaxies in modified gravity theories [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT When bars form within galaxy formation simulations in the standard cosmological context, dynamical friction with dark matter (DM) causes them to rotate rather slowly. However, almost all observed galactic bars are fast in terms of the ratio between corotation radius and bar length.
Roshan, Mahmood +6 more
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Star formation efficiency in the Barred Spiral Galaxy NGC 4303 [PDF]
, 2010 We present new $^{12}$CO(J=1-0) observations of the barred galaxy NGC 4303 using the Nobeyama 45m telescope (NRO45) and the Combined Array for Research in Millimeter-wave Astronomy (CARMA). The H$\alpha$ images of barred spiral galaxies often show active
Alonso-Herrero +35 more
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Molecular Bars in Spiral Galaxies [PDF]
International Astronomical Union Colloquium, 1996 Images of molecular gas in spiral galaxies show two types of bar structure: large-scale bars, which are correlated with the presence of stellar bars, and generally follow the spiral structure, and nuclear “bars” of a few hundred parsecs in size, which show no direct correlation with the presence of a stellar bar.
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Infrared Emission from Barred Spiral Galaxies [PDF]
International Astronomical Union Colloquium, 1996 AbstractAmongst relatively undisturbed spiral galaxies of type ≤ Sc barred morphology is unquestionably associated with powerful mid- and Far-IR emission. On the other hand, even amongst early type galaxies, those with LFIR/LB < 1/3 exhibit no association of high relative FIR luminosity with barred morphology, but some association of IR colors ...
Tim G. Hawarden, J. H. Huang, Q. S. Gu
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The Astrophysical Journal Letters, 2023 A primary new capability of JWST is the ability to penetrate the dust in star-forming galaxies to identify and study the properties of young star clusters that remain embedded in dust and gas. In this Letter we combine new infrared images taken with JWST
Bradley C. Whitmore +30 more
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Effects of the Central Mass Concentration on Bar Formation in Disk Galaxies
The Astrophysical Journal, 2023 While bars are common in disk galaxies, their formation conditions are not well understood. We use N -body simulations to study the formation and evolution of a bar in isolated galaxies consisting of a stellar disk, a classical bulge, and a dark halo. We
Dajeong Jang, Woong-Tae Kim
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Early-growing Supermassive Black Holes Strengthen Bars and Boxy/Peanut Bulges
The Astrophysical Journal, 2023 Using N -body simulations, we explore the effects of growing a supermassive black hole (SMBH) prior to or during the formation of a stellar bar. Keeping the final mass and growth rate of the SMBH fixed, we show that if it is introduced before or while ...
Vance Wheeler +4 more
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Zoom-in cosmological hydrodynamical simulation of a star-forming barred, spiral galaxy at redshift z=2 [PDF]
, 2019 Accepted for publication in MNRASWe present gas and stellar kinematics of a high-resolution zoom-in cosmological chemodynamical simulation, which fortuitously captures the formation and evolution of a star-forming barred spiral galaxy, from redshift $z ...
Kobayashi, Chiaki +2 more
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