Results 101 to 110 of about 261,296 (275)

Iron line profiles in Suzaku spectra of bare Seyfert galaxies [PDF]

, 2010
We methodically model the broad-band Suzaku spectra of a small sample of six ‘bare’ Seyfert galaxies: Ark 120, Fairall 9, MCG −02-14-009, Mrk 335, NGC 7469 and SWIFT J2127.4+5654.
A. Patrick, J. Reeves, D. Porquet, A. Markowitz, A. Lobban, Y. Terashima   +5 more
semanticscholar   +1 more source

Gas Motion Mapping for Three Seyfert Galaxies

Open Astronomy, 2011
We report the preliminary results of a kinematical study of three Seyfert galaxies selected from a sample of nearby active galactic nuclei observed using 3D spectroscopy.
Smirnova A., Moiseev A., Katkov I., Afanasiev V.   +3 more
doaj   +1 more source

Understanding AGN-host connection in partially obscured active galactic nuclei. Part III: Properties of ROSAT-selected SDSS AGNs

, 2010
As the third paper of our serial studies that are aim at examining the AGN-host coevolution by using partially obscured AGNs, we extend the broad-line composite galaxies (composite AGNs) into ROSAT-selected Seyfert 1.8/1.9 galaxies basing upon the RASS ...
Anderson, Antonucci, Bentz, Boller, Boroson, Brandt, Brinkmann, Bromley, Canalizo, Canalizo, Chen, Cid Femandes, Constantin, Daddi, Davies, Desroches, Elitzur, Ferrarese, Flohic, Glazebrook, González Delgado, Granato, Greene, Greene, Greene, Greene, Grupe, Grupe, Grupe, Haring, Heckman, Hickox, Hopkins, Hopkins, Izotov, Izotov, J. Wang, J. Y. Wei, Kaspi, Kaspi, Kauffmann, Kawaguchi, Kewley, Kriss, Laor, Leighly, Magorrian, Mao, Nandra, Parejko, Pounds, Reichard, Rinn, Schartel, Schawinski, Schlegel, Shankar, Shemmer, Silverman, Silverman, Silverman, Spergel, Stasinska, Stockton, Treister, Tremaine, Voges, Walter, Wang, Wang, Wang, Wang, Wang, Wang, Wang, Watabe, Xu, Yuan, Zhou, Zhu   +79 more
core   +1 more source

The Central Kiloparsec of Seyfert and Inactive Host Galaxies: a Comparison of Two-Dimensional Stellar and Gaseous Kinematics [PDF]

, 2007
We investigate the properties of the two-dimensional distribution and kinematics of ionised gas and stars in the central kiloparsecs of a matched sample of nearby active (Seyfert) and inactive galaxies, using the SAURON Integral Field Unit on the William
Dumas, Gaelle, Emsellem, Eric, Mundell, Carole, Nagar, Neil   +3 more
core   +4 more sources

Star Formation in the Dwarf Seyfert Galaxy NGC 4395: Evidence for Both AGN and SN Feedback? [PDF]

, 2023
Payel Nandi, C. S. Stalin, D. J. Saikia, S. Muneer, G. Mountrichas, Dominika Wylezalek, R. Sagar, M. Kissler‐Patig   +7 more
openalex   +1 more source

Optical multiband surface photometry of a sample of Seyfert galaxies - I. Large-scale morphology and local environment analysis of matched Seyfert and inactive galaxy samples [PDF]

, 2010
Context. Parallel analysis of the large-scale morphology and local environment of matched active and control galaxy samples plays an important role in studies of the fueling of active galactic nuclei. Aims.
L. Slavcheva-Mihova, B. Mihov
semanticscholar   +1 more source

Very high energy gamma-ray emission of NGC 1275 and 3c382 and the possible activity nature of the Seyfert Galaxies

EPJ Web of Conferences, 2013
Galaxy NGC 1275 is the central dominant galaxy of the Perseus Cluster of Galaxies and is of Seyfert galaxy class. NGC 1275 is known as powerful X-ray and radio source.
Sinitsyna V.Y., Sinitsyna V.G.
doaj   +1 more source

Mid-infrared Ensemble Variability of Broad-line and Narrow-line Seyfert 1 Galaxies

The Astrophysical Journal
We utilized multiepoch archival data from the Wide-field Infrared Survey Explorer to compare the variability at 3.4 μ m (W1 band) and 4.6 μ m (W2 band) of broad-line Seyfert 1 (BLSy1) galaxies and narrow-line Seyfert 1 (NLSy1) galaxies by employing the ...
Zhipeng Hu, Lisheng Mao
doaj   +1 more source

Revisiting the Fraction of Radio-Loud Narrow Line Seyfert 1 Galaxies with LoTSS DR1

Universe, 2020
Radio-Loud narrow-line Seyfert 1 galaxies (NLS1s), especially the extremely radio-loud ones, are widely accepted as the jetted versions of NLS1s. We explore the radio-loud fraction for NLS1s with recently released LoTSS DR1 at 150 MHz.
Xu-Liang Fan
doaj   +1 more source

The Origin of [OII] in Post-Starburst and Red-Sequence Galaxies in High-Redshift Clusters [PDF]

, 2010
We present the first results from a near-IR spectroscopic campaign of the Cl1604 supercluster at z~0.9 and the cluster RX J1821.6+6827 at z~0.82 to investigate the nature of [OII] 3727A emission in cluster galaxies at high redshift. Of the 401 members in
A. Shapley, B. C. Lemaux, Balogh, Balogh, Binette, Buat, Calzetti, Calzetti, Caputi, Chary, Colina, D. Kocevski, Dressler, Dressler, Dressler, Dressler, Dressler, Erb, Filippenko, Fisher, G. K. Squires, Gal, Gal, Gioia, Gladders, Goto, Gómez, Hashimoto, Heckman, Henry, Jansen, Jansen, Kewley, Kewley, Kewley, Kewley, Kewley, Kewley, Kocevski, Kocevski, Kodama, L. M. Lubin, Lemaux, Liu, Lubin, Lubin, Miller, Moustakas, Moustakas, Mullis, Oemler, Oke, Poggianti, Poggianti, Quintero, R. R. Gal, Rudnick, Silverman, Simcoe, Skrutskie, Taniguchi, Terlevich, Tody, Tran, Tremonti, van Dokkum, Weiner, Yan   +67 more
core   +2 more sources