Results 11 to 20 of about 1,399 (188)
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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Cold gas accretion in galaxies [PDF]
The Astronomy and Astrophysics Review, 2008 Evidence for the accretion of cold gas in galaxies has been rapidly accumulating in the past years. HI observations of galaxies and their environment have brought to light new facts and phenomena which are evidence of ongoing or recent accretion: 1) A large number of galaxies are accompanied by gas-rich dwarfs or are surrounded by HI cloud complexes ...
Sancisi R. +3 more
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ACCRETION OF THE MAGELLANIC SYSTEM ONTO THE GALAXY [PDF]
The Astrophysical Journal, 2011 Our Galaxy is surrounded by a large family of dwarf galaxies of which the most massive are the Large and Small Magellanic Clouds (LMC and SMC). Recent evidence suggests that systems with the mass of the Local Group accrete galaxies in smaller groups rather than individually.
Nichols, Matthew +3 more
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A WARM MODE OF GAS ACCRETION ON FORMING GALAXIES [PDF]
The Astrophysical Journal, 2012 We present results from high--resolution cosmological hydrodynamical simulations of a Milky--Way-sized halo, aimed at studying the effect of feedback on the nature of gas accretion. Simulations include a model of inter-stellar medium and star formation, in which SN explosions provide effective thermal feedback. We distinguish between gas accretion onto
Murante G. +5 more
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Mass Accretion Rates of the HectoMAP Clusters of Galaxies [PDF]
The Astrophysical Journal, 2022 Abstract We estimate the mass accretion rate (MAR) of 321 clusters of galaxies in the HectoMAP Cluster Survey. The clusters span the redshift range 0.17–0.42 and the M 200 mass range ≈ (0.5–3.5) × 1014 M ⊙.
M. Pizzardo +4 more
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, 2021 In the two-phase scenario of galaxy formation, a galaxy's stellar mass growth is first dominated by in-situ star formation, and subsequently by accretion. We analyse the radial distribution of the accreted stellar mass in ~500 galaxies from the hydrodynamical cosmological simulation Magneticum.
Remus, Rhea-Silvia, Forbes, Duncan A.
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The accretion of galaxies into groups and clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2009 We use the galaxy stellar mass and halo merger tree information from the semi-analytic model galaxy catalogue of Font et al. (2009) to examine the accretion of galaxies into a large sample of groups and clusters, covering a wide range in halo mass (10E12.9 to 10E15.3 Msun/h), and selected from each of four redshift epochs (z=0, 0.5, 1.0 and 1.5).
McGee, SL +4 more
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Accretion of gas on to nearby spiral galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 11 pages, 6 figures, accepted for publication in ...
FRATERNALI, FILIPPO, Binney J. J.
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The Astrophysical Journal, 2022 Abstract In the two-phase scenario of galaxy formation, a galaxy’s stellar mass growth is first dominated by in-situ star formation, and subsequently by accretion. We analyze the radial distribution of the accreted stellar mass in ∼500 galaxies from the (48 Mpc/h)3 box volume of the hydrodynamical cosmological simulation Magneticum, in a
Rhea-Silvia Remus, Duncan A. Forbes
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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.
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