Results 71 to 80 of about 466,777 (152)
Overview of the Near-IR S0 Galaxy Survey (NIRS0S)
Advances in Astronomy, 2011 An overview of the results of the near-IR S0 galaxy survey (NIRS0S) is presented. NIRS0S is a magnitude- (mB⩽12.5 mag) and inclination- (
E. Laurikainen +3 more
doaj +1 more source
, 2017 <p>This Galaxy Tour Builder web extension allows you to easily create new interactive tours for the Galaxy framework. You can record and replay any tour, update its content and preview your changes in live.
Durand, William +5 more
core +1 more source
Galaxy Zoo : are bars responsible for the feeding of active galactic nuclei at 0.2
, 2015 We present a new study investigating whether active galactic nuclei (AGN) beyond the local universe are preferentially fed via large-scale bars. Our investigation combines data from Chandra and Galaxy Zoo: Hubble (GZH) in the AEGIS (All-wavelength ...
Masters, Karen L. +21 more
core +1 more source
Conditions for Bar Formation in Bulgeless Disk Galaxies
The Astrophysical JournalWhile bars are commonly observed in disk galaxies, the precise conditions governing their formation remain incompletely understood. To investigate these conditions, we perform a suite of N -body simulations of bulgeless disk galaxies with stellar masses ...
Dajeong Jang, Woong-Tae Kim, Yun Hee Lee
doaj +1 more source
A Stellar Bar Hidden in an Extreme Gas-rich Disk Galaxy at z = 4.055
The Astrophysical Journal LettersThe classical picture for the formation of stellar bars—key dynamical drivers of the evolution of galaxies—is through secular evolution of instability in gas-poor, stellar-dominated disks. The detection with the James Webb Space Telescope of stellar bars
Leindert A. Boogaard +16 more
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Tidally induced bar-like galaxies in simulated clusters
Astronomy & AstrophysicsOne of the scenarios for bar formation in galaxies involves their interaction with a more massive companion. The stellar component is then transformed from a disk into a bar-like prolate spheroid.
Łokas Ewa L.
doaj +1 more source
Constraining dark energy using real and mock galaxy surveys [PDF]
, 2009 In this thesis, we study how dark energy may be constrained by measurements of large-scale clustering in future galaxy surveys, and through the imprint of a time-varying large-scale potential on the CMB (the integrated Sachs-Wolfe effect).
CAI, YANCHUAN
core
Search for Slow Bars in Two Barred Galaxies with Nuclear Structures: NGC 6951 and NGC 7716
The Astrophysical JournalWe investigate two barred galaxies with nuclear structures, NGC 6951 and NGC 7716, to examine whether they host slow bars. Using Gemini/GMOS long-slit spectroscopy, we calculate the bar pattern speed with the Tremaine–Weinberg method and detect ...
Yun Hee Lee +11 more
doaj +1 more source
The complex relationships between active galactic nuclei, bars, and bulges
Astronomy & AstrophysicsContext. Via scaling relations, it is well known that active galactic nuclei (AGNs) and bulges are linked. This link was thought to be driven by mergers, but recent studies show that secular processes are the dominant mechanism of supermassive black hole
Garland I. L. +11 more
doaj +1 more source
The Astrophysical JournalWe analyze bars formed in N -body simulations to investigate two key aspects of stellar kinematic structure of barred galaxies: the angular distributions of the radial and azimuthal components of stellar velocities, and the impact of bars on rotation ...
Seungwon Baek +3 more
doaj +1 more source