Results 111 to 120 of about 397,167 (343)

Isotropic Luminosity Indicators in a Complete AGN Sample

, 2009
The [O IV] 25.89 micron line has been shown to be an accurate indicator of active galactic nucleus (AGN) intrinsic luminosity in that it correlates well with hard (10-200 keV) X-ray emission. We present measurements of [O IV] for 89 Seyfert galaxies from
Aleksandar M. Diamond-Stanic, Antonucci, Armus, Bassani, Bransford, Cannon, Chiaberge, Condon, Dale, de Grijp, Done, Dong, Evans, Feldmeier, Freedman, Fricke, George H. Rieke, Ghosh, Gilli, Grandi, Ho, Ho, Ho, Houck, Iyomoto, Jane R. Rigby, Jones, Kaspi, Kewley, La Franca, Laor, Lavalley, Lawrence, Levenson, Levenson, Levenson, Levenson, Maiolino, Meléndez, Meléndez, Miller, Moran, Mould, Nemmen, Netzer, Nicastro, Oliva, Reynolds, Rigby, Rigby, Risaliti, Sadler, Salvati, Sandage, Sandqvist, Satyapal, Schaerer, Schmitt, Shapley, Slee, Spoon, Steffen, Terashima, Terashima, Tran, Treister, Turner, Turner, Ueda, Veron-Cetty, Vila, Werner, White, Winkler, Yang, Yang, Yaqoob, Yaqoob, Young   +78 more
core   +1 more source

A NEW LUMINOSITY FUNCTION FOR GALAXIES AS GIVEN BY THE MASS-LUMINOSITY RELATIONSHIP [PDF]

The Astronomical Journal, 2008
The search for a luminosity function for galaxies both alternative or companion to a Schechter function is a key problem in the reduction of data from catalogs of galaxies. Two luminosity functions for galaxies can be built starting from two distributions of mass as given by the fragmentation. A first overall distribution function is the Kiang function
openaire   +2 more sources

Robot‐Assisted Automated Serial‐Sectioning and Imaging for 3D Microstructural Investigations

Advanced Engineering Materials, EarlyView.
A fully automated 3D microstructure characterization platform provides new insights into materials. This robot‐assisted system performs serial‐sectioning, etching, and optical imaging to generate large‐volume 3D reconstructions with submicron resolution.
Michael Moschetti, Anton Lemiasheuski, Evgenia Bajer, Ilja Porohovoj, Artur Göbel, Anja Pfennig, Dirk Bettge, Robert Maaß   +7 more
wiley   +1 more source

Blue Stragglers in Low-Luminosity Star Clusters

, 2005
We examine the blue straggler populations of 13 low-luminosity (M_V_t >~ -6) globular clusters and 2 old open clusters. These clusters test blue straggler formation in environments intermediate between higher luminosity (and usually higher density ...
Eric L. Sandquist, Ferraro F. R.
core   +2 more sources

Simulating galaxies in the reionization era with FIRE-2: galaxy scaling relations, stellar mass functions, and luminosity functions [PDF]

, 2018
Xiangcheng Ma, Philip F. Hopkins, Shea Garrison-Kimmel, Claude‐André Faucher‐Giguère, Eliot Quataert, Michael Boylan-Kolchin, Christopher C. Hayward, Robert Feldmann, Dušan Kereš   +8 more
openalex   +1 more source

Thin accretion disk luminosity and its image around rotating black holes in perfect fluid dark matter [PDF]

, 2022
Malihe Heydari-Fard, Sara Ghassemi Honarvar, Mohaddese Heydari-Fard   +2 more
openalex   +1 more source

Advancing Research on Biomaterials and Biological Materials with Scanning Electron Microscopy under Environmental and Low Vacuum Conditions

Advanced Engineering Materials, EarlyView.
Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel, Lea Dierker, Antoine Eyram Kwame, Kim Nora Wagner, Jonas J. Unterholzner, Jan‐Henning Dirks, Dorothea Brüggemann   +6 more
wiley   +1 more source

Luminosity Profiles of Merger Remnants

, 1999
Using published luminosity and molecular gas profiles of the late-stage mergers NGC 3921, NGC 7252 and Arp 220, we examine the expected luminosity profiles of the evolved merger remnants, especially in light of the massive CO complexes that are observed ...
Hibbard, J. E., Yun, Min S.
core  

Cosmological Luminosity Evolution of QSO/AGN Population

, 1999
We apply the observed optical/X-ray spectral states of the Galactic black hole candidates (GBHCs) to the cosmological QSO luminosity evolution under the assumptions that QSOs and GBHCs are powered by similar accretion processes and that their emission ...
Boyle B. J., Choi Y., Haehnelt M. G., Insu Yi, Jones L. R., Jongmann Yang, Mathez G., Mathez G., Page M. J., Small T. A., Yunyoung Choi   +10 more
core   +2 more sources

Microstructural Evolution and Mechanical Performance of Plasma‐Assisted Hybrid Friction Stir Welded Dissimilar Aluminum–Copper Joints

Advanced Engineering Materials, EarlyView.
Plasma‐assisted hybrid friction stir welding of dissimilar AlCu joints employs localized plasma preheating to balance heat input and enhance plastic flow. The optimized process reduces axial force by up to 35%, refines the microstructure, and achieves ≈96% joint efficiency.
Deepak Kumar Yaduwanshi, Pankaj Shrivastava, Ganesh Chouhan, Velaphi Msomi   +3 more
wiley   +1 more source