Results 21 to 30 of about 23,810 (131)
Gas accretion from the cosmic web feeding disk galaxies [PDF]
Proceedings of the International Astronomical Union, 2016 AbstractDisk galaxies in cosmological numerical simulations grow by accreting gas from the cosmic web. This gas reaches the external disk, and then spirals in dragged along by tidal forces and/or disk instabilities. The importance of gas infall is as clear from numerical simulations as it is obscure to observations.
J. Sánchez Almeida +7 more
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Star formation and accretion in the circumnuclear disks of active galaxies [PDF]
Astronomy & Astrophysics, 2013 13 pages, 15 figures, 6 tables, accepted at A& ...
Wutschik, S. +2 more
openaire +3 more sources
Galaxies, 2015 I discuss my latest observational data and ideas about decoupled gaseous subsystems in nearby lenticular galaxies. As an extreme case of inclined gaseous disks, I demonstrate a sample of inner polar disks, derive their incidence, about 10% among the ...
Olga Sil’chenko
doaj +1 more source
The Role of Cold Flows in the Assembly of Galaxy Disks [PDF]
, 2008 We use high resolution cosmological hydrodynamical simulations to demonstrate that cold flow gas accretion, particularly along filaments, modifies the standard picture of gas accretion and cooling onto galaxy disks.
Brook, C. B. +4 more
core +2 more sources
The Relative Orientation of Nuclear Accretion and Galaxy Stellar Disks in Seyfert Galaxies [PDF]
The Astrophysical Journal, 1999 We use the difference (delta) between the position angles of the nuclear radio emission and the host galaxy major axis to investigate the distribution of the angle (beta) between the axes of the nuclear accretion disk and the host galaxy disk in Seyfert galaxies. We provide a critical appraisal of the quality of all measurements, and find that the data
Nagar, Neil M., Wilson, Andrew S.
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The Decoupling of Binaries from Their Circumbinary Disks
The Astrophysical Journal Letters, 2023 We have investigated, both analytically and numerically, accreting supermassive black hole binaries as they inspiral due to gravitational radiation to elucidate the decoupling of binaries from their disks and inform future multimessenger observations of ...
Alexander J. Dittmann +2 more
doaj +1 more source
Magnetized Accretion Disks with Outflows for Changing-look AGNs
The Astrophysical Journal, 2023 Changing-look active galactic nuclei (CL-AGNs) challenge the standard accretion theory, owing to their rapid variability. Recent numerical simulations have shown that, for the sub-Eddington accretion case, the disk is magnetic pressure–dominated ...
Wen-Biao Wu, Wei-Min Gu
doaj +1 more source
NGC 5084: A Massive Disk Galaxy Accreting its Satellites?
The Astronomical Journal, 1997 The spectra of 34 galaxies within 20 arcmins (\sim 100 kpc) of the lenticular galaxy NGC 5084 have been obtained using the FOCAP system on the Anglo-Australian 3.9m telescope. Nine objects are found with projected separations \lesssim 80 kpc and with radial velocities within \pm 630 km/s of the parent galaxy redshift.
Carignan, Claude +3 more
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Continuum Reverberation Mapping of the Accretion Disks in Two Seyfert 1 Galaxies [PDF]
The Astrophysical Journal, 2018 Abstract We present optical continuum lags for two Seyfert 1 galaxies, MCG+08-11-011 and NGC 2617, using monitoring data from a reverberation mapping campaign carried out in 2014. Our light curves span the ugriz filters over four months, with median cadences of 1.0 and 0.6 days for MCG+08-11-011 and NGC 2617, respectively, combined with ...
M. M. Fausnaugh +71 more
openaire +6 more sources
CONNECTION BETWEEN THE ACCRETION DISK AND JET IN THE RADIO GALAXY 3C 111 [PDF]
The Astrophysical Journal, 2011 We present the results of extensive multi-frequency monitoring of the radio galaxy 3C 111 between 2004 and 2010 at X-ray (2.4--10 keV), optical (R band), and radio (14.5, 37, and 230 GHz) wave bands, as well as multi-epoch imaging with the Very Long Baseline Array (VLBA) at 43 GHz.
Chatterjee, Ritaban +15 more
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