Results 11 to 20 of about 141,201 (236)

Development of Resveratrol-Loaded Herbal Extract-Based Nanocomposites and Their Application to the Therapy of Ovarian Cancer

Nanomaterials, 2018
Resveratrol (RSV) and the ethanol extract of Angelica gigas Nakai (AGN Ex)-based nanoparticles (NPs) were prepared using the nanocrystal concept. AGN/RSV NPs with 224 nm hydrodynamic size, unimodal size distribution, and negative zeta potential values ...
Suyeong Nam, Song Yi Lee, Wie-Soo Kang, Hyun-Jong Cho   +3 more
doaj   +1 more source

Morphologies of z~0.7 AGN host galaxies in CANDELS : no trend of merger incidence with AGN luminosity [PDF]

, 2014
PS would like to acknowledge funding through grant ASI I/005/11/0. DKoo would like to acknowledge funding through grant NSF AST-0808133. SJ acknowledges financial support from the EC through an ERC grant StG-257720.The processes that trigger active ...
Bell, E.~F., Chang, Y.-Y., Conselice, C.~J., Croton, D., Dahlen, T., Dekel, A., Faber, S.~M., Grogin, N., Guo, Y., Hamann, F., Hamilton, T., Hopkins, P.~F., Juneau, S., Kartaltepe, J., Kocevski, D., Koekemoer, A., Koo, D.~C., Lotz, J., McGrath, E.~J., McIntosh, D., Mozena, M., Rosario, D.~J., Santini, P., Somerville, R., van der Wel, A., Villforth, C., Wild, V.   +26 more
core   +4 more sources

Microlensing-Based Studies of the Unresolved Structure of AGNs and the Composition of Lensing Galaxies

Open Astronomy, 2011
Multiple images of quasars formed by gravitational lensing are typically seen through the lensing galaxy. The granulation of the galaxy in stars or other compact objects induces local (‘microscopic’) but strong fluctuations in the gravitational potential
Gradolph Teresa Mediavilla, Gradolph Evencio Mediavilla, Muñoz Jose Antonio   +2 more
doaj   +1 more source

The Clustering of AGN in the Sloan Digital Sky Survey [PDF]

, 2004
We present the two--point correlation function (2PCF) of narrow-line active galactic nuclei (AGN) selected within the First Data Release of the Sloan Digital Sky Survey.
Di Matteo, Tiziana, Gray, Alexander, Miller, Christopher J., Nichol, Robert C., Pope, Adrian, Schneider, Donald P., Szalay, Alexander S., Wake, David A., York, Donald G.   +8 more
core   +2 more sources

Multiband Study of Radio Sources of the RCR Catalogue with Virtual Observatory Tools

Open Astronomy, 2012
We present early results of our multiband study of the RATAN Cold Revised (RCR) catalogue obtained from seven cycles of the “Cold” survey carried with the RATAN-600 radio telescope at 7.6 cm in 1980-1999, at the declination of the SS 433 source.
Zhelenkova O. P., Soboleva N. S., Majorova E. K., Temirova A. V.   +3 more
doaj   +1 more source

AGN outflows trigger starbursts in gas-rich galaxies [PDF]

, 2013
Recent well resolved numerical simulations of AGN feedback have shown that its effects on the host galaxy may be not only negative but also positive. In the late gas poor phase, AGN feedback blows the gas away and terminates star formation.
King, Andrew, Nayakshin, Sergei, Wilkinson, Mark, Zubovas, Kastytis   +3 more
core   +1 more source

The Halo Occupation Distribution of X-ray-Bright Active Galactic Nuclei: A Comparison with Luminous Quasars [PDF]

, 2013
We perform halo occupation distribution (HOD) modeling of the projected two-point correlation function (2PCF) of high-redshift (z~1.2) X-ray-bright active galactic nuclei (AGN) in the XMM-COSMOS field measured by Allevato et al.
Chatterjee, Suchetana, Hickox, Ryan C., Myers, Adam, Richardson, Jonathan W., Zheng, Zheng   +4 more
core   +3 more sources

Identifying Active Galactic Nuclei at z ∼ 3 from the HETDEX Survey Using Machine Learning

The Astronomical Journal, 2023
We used data from the Hobby–Eberly Telescope Dark Energy Experiment (HETDEX) to study the incidence of AGN in continuum-selected galaxies at z ∼ 3.
Valentina Tardugno Poleo, Steven L. Finkelstein, Gene Leung, Erin Mentuch Cooper, Karl Gebhardt, Daniel J. Farrow, Eric Gawiser, Greg Zeimann, Donald P. Schneider, Leah Morabito, Daniel Mock, Chenxu Liu   +11 more
doaj   +1 more source

X-ray bolometric corrections for Compton-thick active galactic nuclei [PDF]

, 2017
We present X-ray bolometric correction factors, $\kappa_{Bol}$ ($\equiv L_{Bol}/L_X$), for Compton-thick (CT) active galactic nuclei (AGN) with the aim of testing AGN torus models, probing orientation effects, and estimating the bolometric output of the ...
Ballantyne, D. R., Baloković, M., Bauer, F. E., Boorman, P., Brandt, W. N., Brightman, M., Buchner, J., Comastri, A., Del Moro, A., Farrah, D., Gandhi, P., Harrison, F. A., Koss, M., Lanz, L., Masini, A., Ricci, C., Stern, D., Vasudevan, R., Walton, D. J.   +18 more
core   +4 more sources

Emission-line Diagnostics of Low Metallicity AGN [PDF]

, 2006
Current emission-line based estimates of the metallicity of active galactic nuclei (AGN) at both high and low redshifts indicate that AGN have predominantly solar to supersolar metallicities. This leads to the question: do low metallicity AGN exist?
Groves, Brent, Heckman, Timothy, Kauffmann, Guinevere   +2 more
core   +3 more sources