Browsing by Subject "Galaxies: Seyfert"

Now showing items 1-11 of 11

    • AGN feedback in the nucleus of M51 
      Querejeta, M.; Schinnerer, E.; García Burillo, S.; Bigiel, F.; Blanc Mendiberri, Guillermo; Colombo, D.; Hughes, A.; Kreckel, K.; Leroy, A. K.; Meidt, S. E.; Meier, D. S.; Pety, J.; Sliwa, K. (EDP Sciences, 2016)
      AGN feedback is invoked as one of the most relevant mechanisms that shape the evolution of galaxies. Our goal is to understand the interplay between AGN feedback and the interstellar medium in M 51, a nearby spiral galaxy ...
    • Evidence for Periodicity in 43 Year-Long Monitoring of NGC 5548 
      Bon, Edi; Zucker, S.; Netzer, H.; Marziani, Paola; Bon, N.; Jovanovic, Predrag; Shapovalova, A. I.; Komossa, S.; Gaskell, C. M.; Popović, Ljiljana; Britzen, Stefan; Chavushyan, V. H.; Burenkov, A.; Sergeev, S. G.; La Mura, Giovanni; Valdés, J. R.; Stalevski, Marko (IOP, 2016)
      We present an analysis of 43 years (1972 to 2015) of spectroscopic observations of the Seyfert 1 galaxy NGC 5548. This includes 12 years of new unpublished observations (2003 to 2015). We compiled about 1600 H beta spectra ...
    • Long-term monitoring of the archetype Seyfert galaxy MCG-6-30-15: X-ray, optical and near-IR variability ... 
      Lira Teillery, Paulina; Arevalo, P.; Uttley, P.; McHardy, I.; Videla, L. (Royal Astronomical Society, 2015)
      We present long-term monitoring of MCG-6-30-15 in X-rays, optical and near-IR wavelengths, collected over 5 yr of monitoring. We determine the power spectrum density of all the observed bands and show that after taking ...
    • Space telescope and optical reverberation mapping project. I. Ultraviolet observations of the seyfert 1 ... 
      Rosa, G. de; Peterson, B. M.; Ely, J.; Kriss, G. A.; Crenshaw, D. M.; Horne, Keith; Korista, K. T.; Netzer, H.; Pogge, R. W.; Arévalo, P.; Barth, A. J.; Bentz, M. C.; Brandt, W. N.; Breeveld, A. A.; Brewer, B. J.; Dalla Bontà, E.; Lorenzo Cáceres, A. de; Denney, K. D.; Dietrich, M.; Edelson, R.; Evans, P. A.; Fausnaugh, M. M.; Gehrels, N.; Gelbord, J. M.; Goad, M. R.; Grier, C. J.; Grupe, D.; Hall, P. B.; Kaastra, J.; Kelly, B. C.; Kennea, J. A.; Kochanek, C. S.; Lira Teillery, Paulina; Mathur, S.; McHardy, I. M.; Nousek, J. A.; Pancoast, A.; Papadakis, I.; Pei, L.; Schimoia, J. S.; Siegel, M.; Starkey, D.; Treu, T.; Uttley, P.; Vaughan, S.; Vestergaard, M.; Villforth, C.; Yan, H.; Young, S.; Zu, Y. (IOP Publishing, 2015)
      We describe the first results from a six-month long reverberation-mapping experiment in the ultraviolet based on 171 observations of the Seyfert 1 galaxy NGC 5548 with the Cosmic Origins Spectrograph on the Hubble Space ...
    • Space telescope and optical reverberation mapping project. II. Swift and hst reverberation mapping of the ... 
      Edelson, R.; Gelbord, J. M.; Horne, K.; McHardy, I. M.; Peterson, B. M.; Arévalo, P.; Breeveld, A. A.; Rosa, G. de; Evans, P. A.; Goad, M. R.; Kriss, G. A.; Brandt, W.N.; Gehrels, N.; Grupe, D.; Kennea, J. A.; Kochanek, C. S.; Nousek, J. A.; Papadakis, I.; Siegel, M.; Starkey, D.; Uttley, P.; Vaughan, S.; Young, S.; Barth, A. J.; Bentz, M. C.; Brewer, B. J.; Crenshaw, D. M.; Dalla Bontà, E.; Lorenzo Cáceres, A. de; Denney, K. D.; Dietrich, M.; Ely, J.; Fausnaugh, M. M.; Grier, C. J.; Hall, P. B.; Kaastra, J.; Kelly, B. C.; Korista, K. T.; Lira Teillery, Paulina; Mathur, S.; Netzer, H.; Pancoast, A.; Pei, L.; Pogge, R. W.; Schimoia, J. S.; Treu, T.; Vestergaard, M.; Villforth, C.; Yan, H.; Zu, Y. (IOP Publishing, 2015)
      Recent intensive Swift monitoring of the Seyfert 1 galaxy NGC 5548 yielded 282 usable epochs over 125 days across six UV/optical bands and the X-rays. This is the densest extended active galactic nucleus (AGN) UV/optical ...
    • Space Telescope and Optical Reverberation Mapping Project. V. Optical Spectroscopic Campaign and Emission-line ... 
      Pei, L.; Fausnaugh, M. M.; Barth, A. J.; Peterson, B. M.; Bentz, M. C.; Rosa, G. de; Denney, K. D.; Goad, M. R.; Kochanek, C. S.; Korista, K. T.; Kriss, G. A.; Pogge, R. W.; Bennert, V. N.; Brotherton, M.; Clubb, K. I.; Dalla Bontà, E.; Filippenko, A. V.; Greene, J. E.; Grier, C. J.; Vestergaard, M.; Zheng, W.-K; Adams, Scott M.; Beatty, Thomas G.; Bigley, A.; Brown, Jacob E.; Brown, Jonathan S.; Canalizo, G.; Comerford, J. M.; Coker, Carl T.; Corsini, E. M.; Croft, S.; Croxall, K. V.; Deason, A. J.; Eracleous, Michael; Fox, O. D.; Gates, E. L.; Henderson, C. B.; Holmbeck, E.; Holoien, T. W.-S; Jensen, J. J.; Johnson, C. A.; Kelly, P. L.; Kim, S.; King, A.; Lau, M. W.; Li, Miao; Lochhaas, Cassandra; Ma, Zhiyuan; Manne-Nicholas, E. R.; Mauerhan, J. C.; Malkan, M. A.; McGurk, R.; Morelli, L.; Mosquera, Ana; Dale Mudd, Dale; Muller Sánchez, F.; Nguyen, M. L.; Ochner, P.; Ou-Yang, B.; Pancoast, A.; Penny, Matthew T.; Pizzella, A.; Poleski, Radoslaw; Runnoe, Jessie; Scott, B.; Schimoia, Jaderson S.; Shappee, B. J.; Shivvers, I.; Simonian, Gregory V.; Siviero, A.; Somers, Garrett; Stevens, Daniel J.; Strauss, M. A.; Tayar, Jamie; Tejos, Nicolás; Treu, T.; Van Saders, J.; Vican, L.; Villanueva, S.; Yuk, H.; Zakamska, N. L.; Zhu, W.; Anderson, M. D.; Arévalo, P.; Bazhaw, C.; Bisogni, S.; Borman, G. A.; Bottorff, M. C.; Brandt, W. N.; Breeveld, A. A.; Cackett, E. M.; Carini, M. T.; Crenshaw, D. M.; Lorenzo Cáceres, A. de; Dietrich, M.; Edelson, R.; Efimova, N. V.; Ely, J.; Evans, P. A.; Ferland, G. J.; Flatland, K.; Gehrels, N.; Geier, S.; Gelbord, J. M.; Grupe, D.; Gupta, A.; Hall, P. B.; Hicks, S.; Horenstein, D.; Horne, Keith; Hutchison, T.; Im, M.; Joner, M. D.; Jones, J.; Kaastra, J.; Kaspi, S.; Kelly, B. C.; Kennea, J. A.; Kim, M.; Kim, S. C.; Klimanov, S. A.; Lee, J. C.; Leonard, D. C.; Lira Teillery, Paulina; MacInnis, F.; Mathur, S.; McHardy, I. M.; Montouri, C.; Musso, R.; Nazarov, S. V.; Netzer, H.; Norris, R. P.; Nousek, J. A.; Okhmat, D. N.; Papadakis, I.; Parks, J. R.; Pott, J.-U.; Rafter, S. E.; Rix, H.-W.; Saylor, D. A.; Schnülle, K.; Sergeev, S. G.; Siegel, M.; Skielboe, A.; Spencer, M.; Starkey, D.; Sung, H.-I.; Teems, K. G.; Turner, C. S.; Uttley, P.; Villforth, C.; Weiss, Y.; Woo, J.-H.; Yan, H.; Young, S.; Zu, Y. (Institute of Physics Publishing, 2017)
      We present the results of an optical spectroscopic monitoring program targeting NGC 5548 as part of a larger multi-wavelength reverberation mapping campaign. The campaign spanned six months and achieved an almost daily ...
    • Spectropolarimetry of NGC 3783 and Mrk 509: evidence for powerful nuclear winds in Seyfert 1 galaxies 
      Lira Teillery, Paulina María; Kishimoto, M.; Goosmann, R. W.; Campos, R.; Axon, D.; Elvis, M.; Lawrence, A.; Peterson, B. M.; Robinson, A. (Oxford, 2021)
      We present results from high signal-to-noise optical spectropolarimetric observations of the Seyfert 1 galaxies NGC3783 and Mrk 509 in the 3500-7000 angstrom range. We find complex structure in the polarized emission for ...
    • The complex, dusty narrow-line region of NGC 4388: Gas-jet interactions, outflows and extinction revealed ... 
      Rodríguez Ardila, A.; Mason, R. E.; Martins, L.; Ramos Almeida, C.; Riffel, R. A.; Riffel, R.; Lira Teillery, Paulina; González Martín, O.; Dametto, N. Z.; Flohic, H.; Ho, L. C.; Ruschel Dutra, D.; Thanjavur, K.; Colina, L.; McDermid, R. M.; Perlman, E.; Winge, C. (Oxford University, 2017)
      We present Gemini/GNIRS (Gemini Near-Infrared Spectrograph) spectroscopy of the Seyfert2 galaxy NGC 4388, with simultaneous coverage from 0.85 to 2.5μm. Several spatiallyextended emission lines are detected for the first ...
    • The dust covering factor in active galactic nuclei 
      Stalevski, Marko; Ricci, Claudio; Ueda, Yoshihiro; Lira Teillery, Paulina; Fritz, Jacopo; Baes, Maarten (Oxford Univ Press, 2016)
      The primary source of emission of active galactic nuclei (AGNs), the accretion disc, is surrounded by an optically and geometrically thick dusty structure ('the so-called dusty torus'). The infrared radiation emitted by ...
    • The radio structure of the narrow-line Seyfert 1 Mrk 783 with VLBA and e-MERLIN 
      Congiu, E.; Kharb, P.; Tarchi, A.; Berton, M.; Caccianiga, A.; Chen, S.; Crepaldi, L.; Di Mille, F.; Järvelä, E.; Jarvis, M. E.; Mura, G. la; Vietri, A. (Oxford University Press, 2020)
      In this paper, we present the analysis of new radio and optical observations of the narrow-line Seyfert 1 galaxy Mrk 783. 1.6 GHz observations performed with the e-MERLIN interferometer confirm the presence of the diffuse ...
    • X-ray/UV/optical variability of NGC 4593 with Swift: Reprocessing of X-rays by an extended reprocessor 
      McHardy, I.; Connolly, S.; Horne, K.; Cackett, E.; Gelbord, J.; Peterson, B.; Pahari, M.; Gehrels, N.; Goad, M.; Lira Teillery, Paulina; Arevalo, P.; Baldi, R.; Brandt, N.; Breedt, E.; Chand, H.; Dewangan, G.; Done, C.; Elvis, M.; Emmanoulopoulos, D.; Fausnaugh, M.; Kaspi, S.; Kochanek, C.; Korista, K.; Papadakis, I.; Rao, A.; Uttley, P.; Vestergaard, M.; Ward, M. (Oxford University Press, 2018)
      We report the results of intensive X-ray, UV, and optical monitoring of the Seyfert 1 galaxy NGC 4593 with Swift. There is no intrinsic flux-related spectral change in any variable component with small apparent variations ...