Results 61 to 70 of about 46,933 (305)

A Cosmological Framework for the Co-Evolution of Quasars, Supermassive Black Holes, and Elliptical Galaxies: I. Galaxy Mergers & Quasar Activity

, 2007
(Abridged) We develop a model for the cosmological role of mergers in the evolution of starbursts, quasars, and spheroidal galaxies. Combining halo mass functions (MFs) with empirical halo occupation models, we calculate where major galaxy-galaxy mergers
Athanassoula E., Bower R. G., Combes F., da Angela J., Dušan Kereš, Gao L., Kormendy J., Krivitsky D. S., Lars Hernquist, Li C., Lynden-Bell D., Mo H. J., Pfenniger D., Philip F. Hopkins, Richstone D., Salviander S., Saunders W., Shakura N. I., Soltan A., Thomas J. Cox, Weinmann S. M., White S. D. M.   +21 more
core   +1 more source

Galaxy pairs in the Sloan Digital Sky Survey - XII: The fuelling mechanism of low excitation radio-loud AGN [PDF]

, 2015
We investigate whether the fuelling of low excitation radio galaxies (LERGs) is linked to major galaxy interactions. Our study utilizes a sample of 10,800 spectroscopic galaxy pairs and 97 post-mergers selected from the Sloan Digital Sky Survey with ...
Ellison, Sara L., Hickox, Ryan C., Patton, David R.   +2 more
core   +3 more sources

THE DRIVING MECHANISM OF STARBURSTS IN GALAXY MERGERS [PDF]

The Astrophysical Journal, 2010
16 pages, 5 figures, submitted to ApJL, revised version after referee ...
Teyssier, R, Chapon, D, Bournaud, F
openaire   +5 more sources

Multifunctional Chiral Halide Perovskites: Advancing Chiro‐Optics, Chiro‐Optoelectronics, and Spintronics

Advanced Science, EarlyView.
This review spotlights key advances in chiral halide perovskite materials and devices, covering device architectures, fabrication methods, and emerging applications like circularly polarized light functions, neuromorphic computing, and spintronics. It explores structure‐property relationships and chirality transfer mechanisms, discusses challenges in ...
Qi Liu, Hui Ren, Qi Wei, Mingjie Li
wiley   +1 more source

Powerful Radio-loud Quasars Are Triggered by Galaxy Mergers in the Cosmic Bright Ages

The Astrophysical Journal
While supermassive black holes are ubiquitous features of galactic nuclei, only a small minority are observed during episodes of luminous accretion. The physical mechanism(s) driving the onset of fueling and ignition in these active galactic nuclei (AGN)
Peter Breiding, Marco Chiaberge, Erini Lambrides, Eileen T. Meyer, S. P. Willner, Bryan Hilbert, Martin Haas, George Miley, Eric S. Perlman, Peter Barthel, Christopher P. O’Dea, Alessandro Capetti, Belinda Wilkes, Stefi A. Baum, Duccio F. Macchetto, William Sparks, Grant Tremblay, Colin Norman   +17 more
doaj   +1 more source

Forming Young Bulges within Existing Disks: Statistical Evidence for External Drivers

, 2003
Contrary to traditional models of galaxy formation, recent observations suggest that some bulges form within preexisting disk galaxies. Such late-epoch bulge formation within disks seems to be linked to disk gas inflow and central star formation, caused ...
Abraham R. G., Andredakis Y. C., Becker R. H., Elizabeth J. Barton, Ellis R. S., Friedli D., Kauffmann G., Rolf A. Jansen, Schwarzkopf U., Sheila J. Kannappan, Shioya Y., Tully R. B.   +11 more
core   +1 more source

Galaxy and Mass Assembly (GAMA): merging galaxies and their properties [PDF]

, 2014
We derive the close pair fractions and volume merger rates for galaxies in the Galaxy and Mass Assembly (GAMA) survey with −23 < Mr < −17 (ΩM = 0.27, ΩΛ = 0.73, H0 = 100 km s−1 Mpc−1) at 0.01 < z < 0.22 (look-back time of
Aaron S. G. Robotham, Abraham, Ahn, Andrew M. Hopkins, Baldry, Baldry, Baldwin, Baugh, Bell, Bergvall, Berrier, Bessiere, Blumenthal, Boylan-Kolchin, Bridge, Bruzual, Bundy, Casteels, Cattaneo, Chou, Cisternas, Cluver, Colless, Comerford, Conselice, Cotini, Darg, Darg, De Propris, De Propris, De Propris, De Propris, de Ravel, Deng, Deng, Driver, Driver, Ellison, Ellison, Faber, Fritz, Genel, Guo, Haas, Holmberg, Hopkins, Hopkins, Huang, Ivan K. Baldry, Jian, Jiang, Jiang, Jogee, Jon Loveday, Joss Bland-Hawthorn, Kampczyk, Kartaltepe, Kauffmann, Kaviraj, Kelvin, Kitzbichler, Lee Kelvin, Li, Lin, Lin, Lin, Liske, Lopez-Sanjuan, Lopez-Sanjuan, Lopez-Sanjuan, Lotz, Lotz, Lotz, Maller, Masjedi, Masjedi, McGee, McLure, Mihos, Mo, Moore, Moreno, Murali, Norberg, Parry, Patton, Patton, Patton, Patton, Patton, Peng, Perret, Robaina, Robaina, Roberto De Propris, Robotham, Robotham, Ryan, Sarah Brough, Simon P. Driver, Skelton, Springel, Steve Phillipps, Stewart, Strateva, Taylor, Teng, Thomas, Toomre, Toomre, Toribio, Tremonti, Trinh, van den Bosch, van Dokkum, Wen, Wild, Williams, Xu, York, Zwicky, Zwicky   +121 more
core   +2 more sources

Subcluster mergers and galaxy infall in A2151 [PDF]

The Astronomical Journal, 1995
We have obtained a 12.5 ksec image of the Hercules Cluster, A2151, with the {\it ROSAT} PSPC. Comparison of the optical and X-ray data suggest the presence of at least three distinct subclusters in A2151. The brightest X-ray emission coincides with the highest-density peak in the galaxy distribution, and is bimodal.
Christina M. Bird, Timothy C. Beers, David S. Davis   +2 more
openaire   +4 more sources

The Effect of Immersion Technology on the Quality of Life in Older Adults: A Systematic Review

AGING MEDICINE, EarlyView.
Immersive technologies, especially virtual reality (VR), significantly improve the quality of life for older adults by enhancing physical health, cognitive function, and psychological well‐being. These technologies can be adapted to meet individual needs, making them an effective tool for addressing the challenges of aging.
Solmaz Sohrabei, Vahideh Zolfaghari, Seyed Jafar Ehsanzadeh   +2 more
wiley   +1 more source

Artificial Intelligences: A Bridge Toward Diverse Intelligence and Humanity's Future

Advanced Intelligent Systems, EarlyView.
Many discussions of artificial intelligence fail to address deeper questions being raised by advances in developmental biology, neuroscience, bioengineering, and philosophy of mind. Novel beings, including technologically and biologically augmented humans, engineered life forms, hybrots, and others, require tools of the emerging field of diverse ...
Michael Levin
wiley   +1 more source