Erratum: From dwarf spheroidals to cD galaxies: simulating the galaxy population in a ΛCDM cosmology [PDF]
, 2010 We have updated and extended our semi-analytic galaxy formation modelling capabilities and applied them simultaneously to the stored halo/subhalo merger trees of the Millennium and Millennium-II simulations.
Qi Guo +8 more
semanticscholar +1 more source
THE SPACE DENSITY OF EXTENDED ULTRAVIOLET (XUV) DISKS IN THE LOCAL UNIVERSE AND IMPLICATIONS FOR GAS ACCRETION ONTO GALAXIES [PDF]
, 2011 We present results of the first unbiased search for extended ultraviolet (XUV)-disk galaxies undertaken to determine the space density of such galaxies.
J. Lemonias +10 more
semanticscholar +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
openaire +2 more sources
Active Galactic Nucleus Feedback in an Elliptical Galaxy with the Most Updated AGN Physics. I. Low Angular Momentum Case [PDF]
, 2017 We investigate the effects of AGN feedback on the cosmological evolution of an isolated elliptical galaxy by performing two-dimensional high-resolution hydrodynamical numerical simulations. The inner boundary of the simulation is chosen so that the Bondi
F. Yuan +5 more
semanticscholar +1 more source
Core-collapse Supernova Explosions in Active Galactic Nucleus Accretion Disks
The Astrophysical Journal, 2023 Astrophysical events that occur in active galactic nucleus (AGN) disks are believed to differ significantly from the ordinary in the interstellar medium.
Fu-Lin Li +6 more
doaj +1 more source
An accretion disk laboratory in the Seyfert 1.9 galaxy NGC 2992 [PDF]
Proceedings of the International Astronomical Union, 2006 AbstractOver twenty five years of X-ray observations of the Seyfert 1.9 galaxy NGC 2992 show that it is a promising test-bed for severely constraining accretion disk models. The previous interpretation of the historical activity of NGC 2992 in terms of the accretion disk slowly becoming dormant over many years and then ‘re-building’ itself is not ...
Tahir Yaqoob +2 more
openaire +1 more source
X-Ray Spectroscopic Evidence for Intermediate-Mass Black Holes: Cool Accretion Disks in Two Ultraluminous X-Ray Sources [PDF]
, 2002 We have analyzed an XMM-Newton observation of the nearby spiral galaxy NGC 1313, which contains two "ultraluminous" X-ray (ULX) sources. We measure isotropic luminosities of LX = 2.0 × 1040 ergs s-1 and LX = 6.6 × 1039 ergs s-1 for NGC 1313 X-1 and X-2 ...
J. Miller +5 more
semanticscholar +1 more source
Gas accretion in galactic disks [PDF]
, 2004 : Evidence for the accretion of material in spiral galaxies has grown over the past years and clear signatures can be found in HI observations of galaxies.
Sancisi, R., Hulst, T. van der; id_orcid
core +4 more sources
Star Captures by Quasar Accretion Disks: A Possible Explanation of the M-σ Relation [PDF]
, 2003 A new theory of quasars is presented in which the matter of thin accretion disks around black holes is supplied by stars that plunge through the disk.
J. Miralda-Escudé, J. Kollmeier
semanticscholar +1 more source
Evolution of Accretion Disks around Massive Black Holes: Constraints from the Demography of Active Galactic Nuclei [PDF]
, 2005 Observations have shown that the Eddington ratios (the ratio of the bolometric luminosity to the Eddington luminosity) in QSOs/active galactic nuclei (AGNs) cover a wide range. In this paper we connect the demography of AGNs obtained by the Sloan Digital
Qingjuan Yu, Youjun Lu, G. Kauffmann
semanticscholar +1 more source