Results 31 to 40 of about 2,437 (246)
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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, 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 Astrophysical Journal, 2023 Observational evidence and many numerical simulations show the existence of winds (i.e., uncollimated outflows) in the accretion systems of elliptical galaxy centers.
Razieh Ranjbar, Shahram Abbassi
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Gas Accretion Can Drive Turbulence in Galaxies
The Astrophysical Journal, 2023 The driving of turbulence in galaxies is deeply connected with the physics of feedback, star formation, outflows, accretion, and radial transport in disks.
John C. Forbes +13 more
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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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Lopsided Spiral Galaxies and a Limit on the Galaxy Accretion Rate [PDF]
The Astrophysical Journal, 1997 We present a measurement of lopsidedness for the stellar disks of 60 field spiral galaxies in terms of the azimuthal m=1 Fourier amplitude, A_1, of the stellar light. We conjecture that this lopsidedness is caused by tidal interactions and calculate an UPPER limit on the accretion rate of small galaxies.
Zaritsky, Dennis, Rix, Hans-Walter
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On the Population of Wind-accreting Neutron Stars in the Galaxy
The Astrophysical Journal, 2002 We explore the possibility that neutron stars accreting from the winds of main-sequence stellar companions account for a significant fraction of low-luminosity, hard X-ray sources ...
Pfahl, E, Rappaport, S, Podsiadlowski, P
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The gravitational microlens influence on X-ray spectral line generated by an AGN accretion disc [PDF]
Serbian Astronomical Journal, 2001 The influence of gravitational microlensing on the X-ray spectral line profiles originated from a relativistic accretion disc has been studied. Using a disc model, we show that microlensing can induce noticeable changes in the line shapes when the ...
Popović L.Č. +4 more
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Unification of Radio Galaxies and their Accretion Jet Properties [PDF]
Journal of Astrophysics and Astronomy, 2011 We investigate the relation between black hole mass, M_bh, and jet power, Q_jet, for a sample of BL Lacs and radio quasars. We find that BL Lacs are separated from radio quasars by the FR I/II dividing line in M_bh-Q_jet plane, which strongly supports the unification scheme of FR I/BL Lac and FR II/radio quasar.
Wu, Qingwen, Xu, Ya-Di, Cao, Xinwu
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Chemodynamic evidence of pristine gas accretion in the void galaxy VGS 12
Astronomy & AstrophysicsContext. Accretion of metal-poor gas is expected to be an important channel of gas replenishment in galaxy evolution studies. However, observational evidence of this process is still relatively scarce. Aims. The unusual polar disk galaxy VGS 12 was found
Egorova Evgeniya +7 more
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