Results 131 to 140 of about 176,075 (225)
The relation between dynamics and star formation in barred galaxies [PDF]
, 2011 We analyze optical and near-infrared data of a sample of 11 barred spiral galaxies, in order to establish a connection between star formation and bar/spiral dynamics. We find that 22 regions located in the bars, and 20 regions in the spiral arms beyond the end of the bar present azimuthal color/age gradients that may be attributed to star formation ...
arxiv +1 more source
Chiral Emission from Optical Metasurfaces and Metacavities
Advanced Photonics Research, Volume 5, Issue 12, December 2024.Chiral emission with near‐unity degree of circular polarization and strong emission intensities is highly desirable. This review discusses recent experimental demonstrations on chiral emission from achiral emitters that are combined with patterned nanostructures.
Jungho Han +5 more
wiley +1 more source
Insect Molecular Biology, Volume 33, Issue 6, Page 662-677, December 2024.The genome of Dermatophagoides pteronyssinus was screened for genes encoding peptidases (n = 320), glycosylases (n = 77), lipases and esterases (n = 320), peptidase inhibitors (n = 65) and allergen‐related proteins (n = 52). Ingestion of cystatin A caused the regulation of cysteine endopeptidases and glycosylases, genes acquired by horizontal gene ...
José Cristian Vidal‐Quist +3 more
wiley +1 more source
Gas flow in the barred spiral galaxy NGC 5383
, 1978 Line-of-sight gas velocities calculated from a numerical hydrodynamical model of a barred spiral galaxy are compared with the observations and models made by Peterson, Rubin, Ford, and Thonnard of the gas flow in NGC 5383.
J. M. Huntley
semanticscholar +1 more source
Physiological Reports, Volume 12, Issue 23, December 2024.Abstract Insufficient physical activity is associated with increased relative risk of cardiometabolic disease and is an independent risk factor for mortality. Experimentally reducing physical activity rapidly induces insulin resistance, impairs glucose handling, and drives metabolic inflexibility.
Alice Meyer +8 more
wiley +1 more source
Barred spiral galaxy NGC 3992: Does it have a massive halo
, 1982 We present new high-resolution H I observations of the barred spiral galaxy NGC 3992 and three nearby satellite systems. These data are employed to estimate the mass and mass distribution of NGC 3992.
S. Gottesman, J. Hunter
semanticscholar +1 more source
Orbital Support and Evolution of CX/OX Structures in Boxy/Peanut Bars
The Astrophysical JournalBarred galaxies exhibit boxy/peanut or X-shapes (BP/X) protruding from their disks in edge-on views. Two types of BP/X morphologies exist depending on whether the X-wings meet at the center (CX) or are off-centered (OX).
Behzad Tahmasebzadeh +9 more
doaj +1 more source
Properties of bars in the local universe [PDF]
arXiv, 2008 We studied the fraction and properties of bars in a sample of about 3000 galaxies extracted from SDSS-DR5. This represents a volume limited sample with galaxies located between redshift 0.01
arxiv
Ring or No Ring—Revisiting the Multiphase Nuclear Environment in M31
The Astrophysical JournalNuclear rings, prevalent in barred galaxies, are essential to understanding gas transport toward galactic nuclei. However, the peculiar nuclear ring in our neighboring galaxy M31 remains poorly understood.
Zongnan Li +11 more
doaj +1 more source
Effects of Halo Spin on the Formation and Evolution of Bars in Disk Galaxies
The Astrophysical JournalThe spin of dark halos has been shown to significantly affect bar formation and evolution in disk galaxies. To understand the physical role of halo spin in bar formation, we run N -body simulations of isolated, Milky Way–sized galaxies by varying the ...
Dajeong Jang, Woong-Tae Kim
doaj +1 more source