Results 11 to 20 of about 2,437 (246)
EPJ Web of Conferences, 2012 Cosmology requires at least half of the baryons in the Universe to be in the intergalactic medium, much of which is believed to form hot coronae around galaxies. Star-forming galaxies must be accreting from their coronae.
Binney J., Fraternali F.
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Evidence for Recent Accretion in Nearby Galaxies [PDF]
The Astrophysical Journal, 1995 I discuss observations of magnitude residuals from the B-band Tully-Fisher relationship, B-V color, chemical abundance gradients, and asymmetries in the H I and stellar disks of nearby spiral galaxies within the context of a model in which small satellites or H I clouds are accreted onto the outer disks of spiral galaxies.
Dennis Zaritsky
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JWST interferometric imaging reveals the dusty torus obscuring the supermassive black hole of Circinus galaxy [PDF]
Nature CommunicationsThe dusty and molecular torus is an elusive structure surrounding supermassive black holes, yet its importance is unequivocal for understanding feedback and accretion mechanisms.
Enrique Lopez-Rodriguez +8 more
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The Accretion Geometry in Radio-Loud Active Galaxies [PDF]
Modern Physics Letters A, 2007 We review the latest attempts to determine the accretion geometry in radio-loud active galactic nuclei (AGN). These objects, which comprise ~ 10–20% of the AGN population, produce powerful collimated radio jets that can extend thousands of parsecs from the center of the host galaxy. Recent multiwavelength surveys have shown that radio-loudness is more
D. R. Ballantyne
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THE MASS ACCRETION RATE OF GALAXY CLUSTERS: A MEASURABLE QUANTITY [PDF]
The Astrophysical Journal, 2016 ABSTRACT We explore the possibility of measuring the mass accretion rate (MAR) of galaxy clusters from their mass profiles beyond the virial radius R 200. We derive the accretion rate from the mass of a spherical shell whose inner radius is 2R 200, whose thickness changes with redshift, and whose ...
Cristiano De Boni +4 more
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The Astrophysical JournalWe investigate the connection between accretion signatures and host galaxy properties in the context of how active dwarf galaxies are identified. We use the database constructed in E. J. Wasleske & V. F.
Erik J. Wasleske +2 more
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Potential impact of the Sagittarius dwarf galaxy on the formation of young O-rich stars [PDF]
Nature CommunicationsThe Milky Way underwent significant transformations in its early history, characterised by violent mergers and satellite galaxy accretion. However, recent observations reveal notable star formation events over the past 4 Gyr, likely triggered by ...
Tiancheng Sun +12 more
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THE IMPACT OF COLD GAS ACCRETION ABOVE A MASS FLOOR ON GALAXY SCALING RELATIONS [PDF]
Astrophysical Journal, 2010 Nicolas Bouché +2 more
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Accretion of galaxy groups into galaxy clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT We study the role of group infall in the assembly and dynamics of galaxy clusters in ΛCDM. We select 10 clusters with virial mass M200 ∼ 1014 $\rm M_\odot$ from the cosmological hydrodynamical simulation Illustris and follow their galaxies with stellar mass M⋆ ≥ 1.5 × 108 $\rm M_\odot$.
José A Benavides +2 more
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The Nature of Accretion in Seyfert Galaxies [PDF]
International Journal of Astrophysics and Space Science, 2021 We present statistical results from a sample of 91,006 Seyfert galaxies obtained from SDSS DR14 (Sloan Digital Sky Survey Data Release 14). Using the ratio of the flux of doubly ionized oxygen [OIII] to that of the flux of hydrogen beta line Hβ, the Seyfert galaxy sample was separated into Seyferts 1 and 2.
Nwankwo Ifeanyi Francis +1 more
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