Results 71 to 80 of about 455,148 (185)

The Impacts of Bars, Spirals, and Bulge Size on Gas-phase Metallicity Gradients in MaNGA Galaxies

open access: yesThe Astrophysical Journal
As galaxies evolve over time, the orbits of their constituent stars are expected to change in size and shape, moving stars away from their birth radius. Radial gas flows are also expected. Spiral arms and bars in galaxies are predicted to help drive this
M. E. Wisz   +4 more
doaj   +1 more source

Year‐round spawning increases throughput of genetic modification of common carp (Cyprinus carpio)

open access: yesJournal of the World Aquaculture Society, Volume 57, Issue 4, August 2026.
Abstract The common carp (Cyprinus carpio) is an economically and ecologically significant species. It is both one of the most highly produced fish in aquaculture globally and a persistent, widespread invasive species. Research efforts focused on understanding its biology, improving traits for aquaculture, and generating next‐generation carp control ...
Julie Badger   +12 more
wiley   +1 more source

Enhanced star formation: The importance of bars in spiral galaxies [PDF]

open access: yes, 1987
It was found that among an IR luminous subset of nearby spiral galaxies, nearly all of the systems with IRAS colors and luminosities indicative of enhanced star formation are barred.
Leggett, S. K.   +3 more
core  

The Abundance and Properties of Barred Galaxies out to z ∼ 4 Using JWST CEERS Data

open access: yesThe Astrophysical Journal
We present the first estimate of the observed fraction and properties of bars out to z  ∼ 4 using JWST CEERS NIRCam images. We analyze 1770 galaxies with M _⋆  > 10 ^10 M _⊙ at 0.5 ≤ z ≤ 4 and identify barred galaxies from 839 moderately inclined disk ...
Yuchen Guo   +28 more
doaj   +1 more source

Corotation Resonance of Non-barred Spiral Galaxies

open access: yes, 2018
University of Minnesota M.S. thesis.June 2018. Major: Physics. Advisor: Marcus Seigar. 1 computer file (PDF); vii, 70 pages.One of the main assumptions of density wave theory is that it predicts the existence of corotation resonances in spiral galaxies.
Karki, Arjun
core  

Surface photometry of barred spiral galaxies

open access: yesThe Astrophysical Journal, 1990
La photometrie de surface detaillee a ete realisee pour 6 galaxies spirales barrees de premier type en utilisant des plaques photographiques a haute resolution. Les observations et les reductions des donnees sont presentees et les profils azimutaux de la luminosite sont extraits et analyses.
Kouji Ohta   +2 more
openaire   +1 more source

Unveiling a Hidden Bar-like Structure in NGC 1087: Kinematic and Photometric Evidence Using MUSE/VLT, ALMA, and JWST

open access: yesThe Astrophysical Journal
We report a faint nonaxisymmetric structure in NGC 1087 through the use of James Webb Space Telescope Near Infrared Camera, with an associated kinematic counterpart observed as an oval distortion in the stellar velocity map, H α , and CO J = 2 → 1 ...
Carlos López-Cobá   +2 more
doaj   +1 more source

Investigating the Complex Ring Morphology in UGC 10168: A Photometric and Structural Analysis of a (R1R2′)SABa(r′l)a Galaxy

open access: yesIraqi Journal of Physics
This study provides a comprehensive photometric and structural analysis of the galaxy UGC 10168, which is classified as (R₁R₂′)SABa(r′l)a in the Comprehensive de Vaucouleurs Revised Hubble-Sandage (CVRHS) system.
Zeinab F. Hussein, Abdullah K. Ahmed
doaj   +1 more source

End‐to‐End Sensing Systems for Breast Cancer: From Wearables for Early Detection to Lab‐Based Diagnosis Chips

open access: yesAdvanced Materials Technologies, Volume 11, Issue 13, 8 July 2026.
This review explores advances in wearable and lab‐on‐chip technologies for breast cancer detection. Covering tactile, thermal, ultrasound, microwave, electrical impedance tomography, electrochemical, microelectromechanical, and optical systems, it highlights innovations in flexible electronics, nanomaterials, and machine learning.
Neshika Wijewardhane   +4 more
wiley   +1 more source

Dark Gaps and Resonances in Barred Galaxies

open access: yesThe Astrophysical Journal
Dark gaps, low surface brightness regions along the bar minor axis, are expected to form as a consequence of secular evolution in barred galaxies. Although several studies have proposed links between dark gap locations and dynamical resonances, the ...
Taehyun Kim   +6 more
doaj   +1 more source

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