Results 41 to 50 of about 2,437 (246)
Discovery of a Low-redshift Hot Dust-obscured Galaxy
The Astrophysical Journal, 2023 We report the discovery of the hyperluminous, highly obscured active galactic nuclei (AGN) WISE J190445.04+485308.9 (W1904+4853, hereafter, L _bol ∼ 1.1 × 10 ^13 L _⊙ ) at z = 0.415.
Guodong Li +12 more
doaj +1 more source
Star formation and gas accretion in nearby galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 In order to quantify the relationship between gas accretion and star formation, we analyse a sample of 29 nearby galaxies from the WHISP survey which contains galaxies with and without evidence for recent gas accretion. We compare combined radial profiles of FUV (GALEX) and IR 24 μm (Spitzer) characterizing distributions of recent star formation with ...
Kijeong Yim, J. M. van der Hulst
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Angular Momentum Accretion onto Disc Galaxies [PDF]
Proceedings of the International Astronomical Union, 2018 AbstractThroughout the Hubble time, gas makes its way from the intergalactic medium into galaxies fuelling their star formation and promoting their growth. One of the key properties of the accreting gas is its angular momentum, which has profound implications for the evolution of, in particular, disc galaxies.
Fraternali, Filippo, Pezzulli, Gabriele
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Stellar streams around dwarf galaxies in the local Universe
Astronomy & AstrophysicsContext. While mergers between massive galaxies and their dwarf satellites have been well studied, the properties of dwarf–dwarf satellite mergers are not well constrained.
Sakowska Joanna D. +8 more
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Gas accretion on to galaxies and Kelvin–Helmholtz turbulence
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACTContinued star formation over the lifetime of a galaxy suggests that gas is steadily flowing in from the circumgalactic medium. Also, cosmological simulations of large-scale structure formation imply that gas is accreted on to galaxies from the halo inside which they formed.
Itzhak Goldman, Robert Fleck
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A Multiwavelength Technique for Estimating Galaxy Cluster Mass Accretion Rates
The Astrophysical JournalThe mass accretion rate of galaxy clusters is a key factor in determining their structure, but a reliable observational tracer has yet to be established.
John Soltis +9 more
doaj +1 more source
Advanced Optical Materials, EarlyView.Structural color generation is an emerging field for digital display and printing applications. This report presents a novel truncated‐cone design and the first use of GaP sandwiched between two layers of TiO2, demonstrating ultra‐bright, tunable colors with a record color gamut.
Md Rumon Miah +2 more
wiley +1 more source
A Bifunctional T3SS‐Effector Simultaneously Cleaves Host MAP Kinase and Inhibits PPM1A Phosphatase
Advanced Science, EarlyView.Pathogenic bacteria exploit the metalloprotease effector NleD to subvert host defenses. Structural, biochemical, and infection analyses reveal a bifunctional mechanism by which NleD binds and inhibits the host phosphatase PPM1A while preserving its proteolytic activity against MAPKs.
Yaakov Socol +18 more
wiley +1 more source
RADIATIVELY INEFFICIENT ACCRETION IN NEARBY GALAXIES
The Astrophysical Journal, 2009 To appear in ApJ, 15 pages, 4 ...
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Accretion and Outflow in Active Galaxies [PDF]
Proceedings of the International Astronomical Union, 2009 AbstractI review accretion and outflow in active galactic nuclei. Accreti4on appears to occur in a series of very small-scale, chaotic events, whose gas flows have no correlation with the large-scale structure of the galaxy or with each other. The accreting gas has extremely low specific angular momentum and probably represents only a small fraction of
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