Results 11 to 20 of about 466,777 (152)
The Effects of Bar Strength and Kinematics on Galaxy Evolution: Slow Strong Bars Affect Their Hosts the Most [PDF]
The Astrophysical JournalWe study how bar strength and bar kinematics affect star formation in different regions of the bar by creating radial profiles of EW[H α ] and D _n 4000 using data from Sloan Digital Sky Survey-IV Mapping Nearby Galaxies at Apache Point Observatory ...
Tobias Géron +7 more
doaj +4 more sources
Galaxy Zoo DESI: large-scale bars as a secular mechanism for triggering AGN [PDF]
Despite the evidence that supermassive black holes (SMBHs) co-evolve with their host galaxy, and that most of the growth of these SMBHs occurs via merger-free processes, the underlying mechanisms which drive this secular co-evolution are poorly ...
Masters, Karen L. +15 more
core +8 more sources
The impact of strong and weak bars on galaxy evolution [PDF]
, 2023 Bars are common structures in disc galaxies that are thought to be long-lived and to have the ability to redistribute matter and angular momentum in their hosts. This implies that bars are important in the evolution of galaxies.
core +1 more source
Spirality: A Novel Way to Measure Spiral Arm Pitch Angle
Galaxies, 2022 We present the MATLAB code Spirality, a novel method for measuring spiral arm pitch angles by fitting galaxy images to spiral templates of known pitch. Computation time is typically on the order of 2 min per galaxy, assuming 8 GB of working memory.
Deanna Shields +9 more
doaj +1 more source
The Chemodynamics of the Stellar Populations in M31 from APOGEE Integrated-light Spectroscopy
The Astrophysical Journal, 2023 We present an analysis of nearly 1000 near-infrared, integrated-light spectra from APOGEE in the inner ∼7 kpc of M31. We utilize full-spectrum fitting with A-LIST simple stellar population spectral templates that represent a population of stars with the ...
Benjamin J. Gibson +10 more
doaj +1 more source
Inclusion and Diversity: Bars within Bars
, 2023 Invited talk about double-barred galaxies for the conference "Galactic bars: driving and decoding galaxy evolution" (Granada, 3-7 July, 2023)
de Lorenzo-Cáceres, Adriana
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The Astrophysical Journal, 2023 We investigate the influence of Toomre’s Q parameter on the bar-forming dynamics of the Maclaurin disk using N -body simulations. According to Toomre’s criterion, the local velocity dispersion parametrized by Q ≥ 1 is required to suppress the local ...
T. Worrakitpoonpon
doaj +1 more source
, 2014 Galaxy masses play a fundamental role in our understanding of structure formation models. This review addresses the variety and reliability of mass estimators that pertain to stars, gas, and dark matter.
Courteau, Stephane +10 more
core +1 more source
First Look at z > 1 Bars in the Rest-frame Near-infrared with JWST Early CEERS Imaging
The Astrophysical Journal Letters, 2023 Stellar bars are key drivers of secular evolution in galaxies and can be effectively studied using rest-frame near-infrared (NIR) images, which trace the underlying stellar mass and are less impacted by dust and star formation than rest-frame UV or ...
Yuchen Guo +47 more
doaj +1 more source
Galaxy workflow from Galaxy 101 for everyone
, 2021 Galaxy workflow from Galaxy 101 for everyone. This workflow is used in the training "How to reproduce published Galaxy analyses" to learn how to run a published Galaxy ...
Melanie Föll, Anne Fouilloux
core +1 more source