Results 41 to 50 of about 466,777 (152)

Investigating the Effects of Bars on Star Formation and Nuclear Activity of Galaxies Using DESI Survey Data

open access: yesThe Astrophysical Journal
We present a statistical analysis of the connections between galactic bars, star formation, and active galactic nucleus (AGN) activity using 33,201 disk galaxies (0.01 
Jianfei Liu, Zhimin Zhou
doaj   +1 more source

Galaxy And Mass Assembly (GAMA) : the galaxy luminosity function within the cosmic web [PDF]

open access: yes, 2015
EE acknowledges support from the Science and Technology Facilities Council. TMR acknowledges support from a ERC Starting Grant (DEGAS-259586). CH acknowledges support from the ERC under the EC FP7 grant number 240185.
Loveday, J   +56 more
core   +1 more source

Galaxy Zoo : finding offset discs and bars in SDSS galaxies [PDF]

open access: yes, 2017
We use multiwavelength Sloan Digital Sky Survey (SDSS) images and Galaxy Zoo morphologies to identify a sample of ∼270 late-type galaxies with an off-centre bar.
Masters, Karen L.   +11 more
core   +4 more sources

Euclid Quick Data Release (Q1)

open access: yesAstronomy & Astrophysics
We present a detailed visual morphology catalogue for the Euclid Quick Release 1 (Q1). Our catalogue includes galaxy features such as bars, spiral arms, and ongoing mergers, for the 378 000 bright (IE 
Walmsley M.   +354 more
doaj   +1 more source

Reduction of the Bar Fraction in Paired Galaxies in the SDSS

open access: yesThe Astrophysical Journal
We investigate the bar fraction in galaxy pairs from the Sloan Digital Sky Survey to assess how galaxy interactions affect bar structures. Compared to isolated galaxies, close pairs exhibit a significantly reduced bar fraction at projected separations ...
Linlin Li   +5 more
doaj   +1 more source

Finding bars in MaNGA galaxies with Galaxy Zoo: 3D

open access: yes, 2023
Mapping Nearby Galaxies at Apache Point Observatory (MaNGA, part of the fourth incarnation of the Sloan Digital Sky Surveys or SDSS-IV), has obtained spatially resolved spectral maps for 10,010 nearby galaxies selected from the SDSS Main Galaxy Sample ...
Masters, Karen L
core   +1 more source

Stellar Bars Form Dark Matter Counterparts in TNG50

open access: yesThe Astrophysical Journal
Dark matter (DM) bars that shadow stellar bars have been previously shown to form in idealized simulations of isolated disk galaxies, but have yet to be studied in a fully cosmological context.
Neil Ash   +3 more
doaj   +1 more source

Implementation of viscoelastic Hopkinson bars [PDF]

open access: yes, 2011
Includes bibliographical references (p. 107-112).The properties of soft, viscoelastic materials at high strain rates are important in furthering our understanding of their role during blast or impact events.
Curry, Richard
core   +1 more source

High-redshift Merger-induced Bar-like Galaxies in IllustrisTNG

open access: yesThe Astrophysical Journal Letters
Recent discoveries made with JWST observations include a significant number of barred galaxies at high redshift. Their origin remains unclear, and their presence seems difficult to reproduce in cosmological simulations of galaxy formation and evolution ...
Ewa L. Łokas
doaj   +1 more source

Galactic Bars Are Already Mature at Cosmic Noon: Bar Strength and Flatness at z ∼ 1.5

open access: yesThe Astrophysical Journal
In this work, we explore the nature of z  > 1 galactic bars. Once thought to be highly transient, our results demonstrate otherwise. Our sample consists of nine massive (>10 ^10.5 M _⊙ ) star-forming barred-spiral galaxies at z _spec  ∼ 1.5.
Boris S. Kalita   +8 more
doaj   +1 more source

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