Infrared and Hard X-Ray Diagnostics of AGN Identification from the Swift
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Probing the Active Galactic Nucleus Unified Model Torus Properties in Seyfert Galaxies
MNRAS 464, 2139–2173 (2017) doi:10.1093/mnras/stw2477 Advance Access publication 2016 September 30 Probing the active galactic nucleus unified model torus properties in Seyfert galaxies Anelise Audibert,1‹ Rogerio´ Riffel,1‹ Dinalva A. Sales,2 Miriani G. Pastoriza1 and Daniel Ruschel-Dutra1 1Departamento de Astronomia, Universidade Federal do Rio Grande do Sul, 9500 Bento Gonc¸alves, Porto Alegre 91501-970, Brazil 2Instituto de Matematica,´ Estat´ıstica e F´ısica, Universidade Federal do Rio Grande, Rio Grande 96203-900, Brazil Accepted 2016 September 28. Received 2016 September 27; in original form 2016 January 8 ABSTRACT We studied the physical parameters of a sample comprising of all Spitzer/Infrared Spectrograph public spectra of Seyfert galaxies in the mid-infrared (5.2–38 μm range) under the active 6 galactic nucleus (AGN) unified model. We compare the observed spectra with ∼10 CLUMPY model spectral energy distributions, which consider a torus composed of dusty clouds. We find a slight difference in the distribution of line-of-sight inclination angle, i, requiring larger angles for Seyfert 2 (Sy 2) and a broader distribution for Seyfert 1 (Sy 1). We found small differences in the torus angular width, σ , indicating that Sy 1 may host a slightly narrower torus than Sy 2. The torus thickness, together with the bolometric luminosities derived, suggests a very compact torus up to ∼6 pc from the central AGN. The number of clouds along the equatorial plane, N, as well the index of the radial profile, q, is nearly the same for both types. These results imply that the torus cloud distribution is nearly the same for type 1 and type 2 objects. -
Herschel Observations of Edge-On Spirals \(HEROES\)
A&A 582, A18 (2015) Astronomy DOI: 10.1051/0004-6361/201526667 & c ESO 2015 Astrophysics HERschel Observations of Edge-on Spirals (HEROES) II. Tilted-ring modelling of the atomic gas disks?;??;??? F. Allaert1, G. Gentile1;2, M. Baes1, G. De Geyter1, T.M. Hughes1;3, F. Lewis4;5, S. Bianchi6, I. De Looze1;7, J. Fritz8, B. W. Holwerda9, J. Verstappen10, and S. Viaene1 1 Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281, 9000 Gent, Belgium e-mail: [email protected] 2 Department of Physics and Astrophysics, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium 3 Instituto de Física y Astronomía, Universidad de Valparaíso, Avda. Gran Bretaña 1111, 951 Valparaíso, Chile 4 Faulkes Telescope Project, Cardiff University, The Parade, Cardiff CF24 3AA, Cardiff, Wales, UK 5 Astrophysics Research Institute, Liverpool John Moores University, IC2, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF, UK 6 Osservatorio Astrofisico di Arcetri – INAF, Largo E. Fermi 5, 50125 Firenze, Italy 7 Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK 8 Centro de Radioastronomía y Astrofísica, CRyA, UNAM, Campus Morelia, A.P. 3-72, CP 58089, 58341 Michoacán, Mexico 9 University of Leiden, Sterrenwacht Leiden, Niels Bohrweg 2, 2333 CA Leiden, The Netherlands 10 Kapteyn Astronomical Institute, University of Groningen, Postbus 800, 9700 AV Groningen, The Netherlands Received 3 June 2015 / Accepted 3 July 2015 ABSTRACT Context. Edge-on galaxies can offer important insight into galaxy evolution because they are the only systems where the distribution of the different components can be studied both radially and vertically. The HEROES project was designed to investigate the interplay between the gas, dust, stars, and dark matter (DM) in a sample of 7 massive edge-on spiral galaxies. -
X-Ray Spectral Parameters for a Sample of 95 Active Galactic Nuclei
Accepted for publication in Astrophysics and Space Science X-Ray Spectral Parameters for a Sample of 95 Active Galactic Nuclei A.A. Vasylenko1, V.I. Zhdanov2, E.V. Fedorova2 1Main Astronomical Observatory NAS of Ukraine, Kyiv, Ukraine e-mail: [email protected] 2Taras Shevchenko National University of Kyiv, Ukraine We present a broadband X-ray analysis of a new homogeneous sample of 95 active galactic nuclei (AGN) from the 22-month Swift/BAT all-sky survey. For this sample we treated jointly the X-ray spectra observed by XMM-Newton and INTEGRAL missions for the total spectral range of 0.5-250 keV. Photon index Г, relative reflection R, equivalent width of Fe Kα line EWFeK, hydrogen column density NH, exponential cut-off energy Ec and intrinsic luminosity Lcorr are determined for all objects of the sample. We investigated correlations Г–R, EWFeK– Lcorr, Г–Ec, EWFeK–NH. Dependence "Г – R" for Seyfert ½ galaxies has been investigated separately. We found that the relative reflection parameter at low power-law indexes for Seyfert 2 galaxies is systematically higher than for Seyfert 1 ones. This can be related to an increasing contribution of the reflected radiation from the gas-dust torus. Our data show that there exists some anticorrelation between EWFeK and Lcorr, but it is not strong. We have not found statistically significant deviations from the AGN Unified Model. Key words: galaxies: Seyfert – X-rays: galaxies: active – galaxies 1. INTRODUCTION It is widely accepted today that the variety of observational appearances of AGNs can be divided in two big groups: those caused by physical conditions in particular AGN, and those due to geometrical effects of the AGN orientation with respect to the line-of-sight. -
Arxiv:1004.5321V1 [Astro-Ph.CO] 29 Apr 2010 I-Nrrdpoete Fthe of Properties Mid-Infrared .A Evr .Mel´Endez M
Mid-Infrared Properties of the Swift Burst Alert Telescope Active Galactic Nuclei Sample of the Local Universe. I. Emission-Line Diagnostics K. A. Weaver, M. Mel´endez1,2, R. F. Mushotzky3, S. Kraemer4, K. Engle5, E. Malumuth6, J. Tueller, C. Markwardt3 NASA Goddard Space Flight Center, Greenbelt, MD, 20771 C.T. Berghea7 and R. P. Dudik U.S. Naval Observatory, Washington, DC 20392 L. M. Winter8 Center for Astrophysics and Space Astronomy, University of Colorado, Boulder, CO 80309-0440 and L. Armus Spitzer Science Center, California Institute of Technology, Pasadena, CA 91125 arXiv:1004.5321v1 [astro-ph.CO] 29 Apr 2010 –2– Received ; accepted To be submitted to the Astrophysical Journal 1NASA Postdoctoral Program Fellow, Goddard Space Flight Center, Greenbelt, MD, 20771 2present address: Department of Physics and Astronomy, Johns Hopkins University, Bal- timore, MD, 21218 3University of Maryland, College Park, MD 20742 4Institute for Astrophysics and Computational Sciences, Department of Physics, The Catholic University of America,Washington, DC 20064 5Adnet 6SESDA 7Computational Physics, Inc., Sprinfield, VA 22151 8Hubble Fellow –3– ABSTRACT We compare mid-infrared emission-line properties, from high-resolution Spitzer spectra of a hard X-ray (14 – 195 keV) selected sample of nearby (z < 0.05) AGN detected by the Burst Alert Telescope (BAT) aboard Swift. The lu- minosity distribution for the mid-infrared emission-lines, [O IV] 25.89 µm, [Ne II] 12.81 µm, [Ne III] 15.56 µm and [Ne V] 14.32/24.32 µm, and hard X-ray contin- uum show no differences between Seyfert 1 and Seyfert 2 populations, however six newly discovered BAT AGNs are under-luminous in [O IV], most likely the result of dust extinction in the host galaxy. -
A New Sample of Buried Active Galactic Nuclei Selected from The
TO APPEAR IN The Astrophysical Journal. Preprint typeset using LATEX style emulateapj v. 08/22/09 A NEW SAMPLE OF BURIED ACTIVE GALACTIC NUCLEI SELECTED FROM THE SECOND XMM-NEWTON SERENDIPITOUS SOURCE CATALOGUE KAZUHISA NOGUCHI,YUICHI TERASHIMA, AND HISAMITSU AWAKI Department of Physics, Ehime University, Matsuyama, Ehime 790-8577, Japan To appear in The Astrophysical Journal. ABSTRACT We present the results of X-ray spectral analysis of 22 active galactic nuclei (AGNs) with a small scattering fraction selected from the Second XMM-Newton Serendipitous Source Catalogue using hardness ratios. They are candidates of buried AGNs, since a scattering fraction, which is a fraction of scattered emission by the circumnuclear photoionized gas with respect to direct emission, can be used to estimate the size of the opening part of an obscuring torus. Their X-ray spectra are modeled by a combination of a power law with a photon index of 1.5−2 absorbed by a column density of ∼ 1023−24 cm−2, an unabsorbed power law, narrow Gaussian lines, and some additional soft components. We find that scattering fractions of 20 among 22 objects are less than a typical value (∼ 3%) for Seyfert2s observed so far. In particular, those of eight objects are smaller than 0.5%, which are in the range for buried AGNs found in recent hard X-ray surveys. Moreover, [O III] λ5007 luminosities at given X-ray luminosities for some objects are smaller than those for Seyfert2s previouslyknown. This fact could be interpreted as a smaller size of optical narrow emission line regions produced in the opening direction of the obscuring torus. -
Cold Gas and Baryon-Induced Dark Matter Cores in Nearby Galaxies
Cold gas and baryon-induced dark matter cores in nearby galaxies Flor Allaert Supervisors: Prof. Dr. Maarten Baes, Dr. Gianfranco Gentile A dissertation submitted to Ghent University in partial fulfilment of the requirements for the degree of Doctor of Science: Astronomy September 2017 Supervisors: Prof. Dr. Maarten Baes Vakgroep Fysica en Sterrenkunde Universiteit Gent Dr. Gianfranco Gentile Vakgroep Fysica en Sterrenkunde Vrije Universiteit Brussel Jury members: Prof. Dr. Dirk Poelman (President) Vakgroep Vastestofwetenschappen Universiteit Gent Dr. Karel Van Acoleyen (Secretary) Vakgroep Fysica en Sterrenkunde Universiteit Gent Prof. Dr. Sven De Rijcke Vakgroep Fysica en Sterrenkunde Universiteit Gent Prof. Dr. Herwig Dejonghe Vakgroep Fysica en Sterrenkunde Universiteit Gent Prof. Dr. Uli Klein Argelander-Institut fur¨ Astronomie Universitat¨ Bonn Prof. Dr. Erwin de Blok Netherlands Institute for Radio Astronomy Contents 1 Introduction1 1.1 Galaxies - building blocks of the Universe.................1 1.1.1 Classification............................2 1.1.2 Chemical evolution.........................4 1.1.3 Accretion and mergers.......................6 1.2 Observing the different components....................8 1.2.1 Stars................................8 1.2.2 Gas.................................9 1.2.3 Dust................................. 12 1.3 Panchromatic SED modelling and dust radiative transfer......... 13 1.3.1 SED fitting............................. 13 1.3.2 Dust radiative transfer....................... 14 1.3.3 The energy balance problem.................... 15 1.4 FRIEDL, HEROES and NHEMESES................... 17 1.4.1 The energy balance problem revisited............... 18 1.5 Dark matter................................. 18 1.5.1 History............................... 19 1.5.2 Dark matter in cosmology..................... 21 1.5.3 Cosmological simulations..................... 23 1.5.4 The cusp-core controversy..................... 24 1.5.5 Baryons to the rescue?...................... -
Herschel Observations of Edge-On Spirals (HEROES). II: Tilted-Ring
Astronomy & Astrophysics manuscript no. HEROES˙II c ESO 2018 July 24, 2018 HERschel? Observations of Edge-on Spirals (HEROES) II. Tilted-ring modelling of the atomic gas disks F. Allaert1, G. Gentile1;2, M. Baes1, G. De Geyter1, T.M. Hughes1;3, F. Lewis4;5, S. Bianchi6, I. De Looze1;7, J. Fritz8, B. W. Holwerda9, J. Verstappen10, and S. Viaene1 1 Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281, B-9000 Gent, Belgium e-mail: [email protected] 2 Department of Physics and Astrophysics, Vrije Universiteit Brussel, Pleinlaan 2, 1050 Brussels, Belgium 3 Instituto de F´ısica y Astronom´ıa, Universidad de Valpara´ıso, Avda. Gran Bretana˜ 1111, Valpara´ıso, Chile 4 Faulkes Telescope Project, Cardiff University, The Parade, Cardiff CF24 3AA, Cardiff, Wales 5 Astrophysics Research Institute, Liverpool John Moores University, IC2, Liverpool Science Park, 146 Brownlow Hill, Liverpool L3 5RF, UK 6 Osservatorio Astrofisico di Arcetri INAF, Largo E. Fermi 5, 50125 Firenze, Italy 7 Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge, CB3 0HA, UK 8 Centro de Radioastronom´ıa y Astrof´ısica, CRyA, UNAM, Campus Morelia, A.P. 3-72, C.P. 58089, Michoacan,´ Mexico 9 University of Leiden, Sterrenwacht Leiden, Niels Bohrweg 2, NL-2333 CA Leiden, The Netherlands 10 Kapteyn Astronomical Institute, University of Groningen, Postbus 800, NL-9700 AV Groningen, the Netherlands ABSTRACT Context. Edge-on galaxies can offer important insights in galaxy evolution as they are the only systems where the dis- tribution of the different components can be studied both radially and vertically. The HEROES project was designed to investigate the interplay between the gas, dust, stars and dark matter (DM) in a sample of 7 massive edge-on spiral galaxies. -
A Survey of Kiloparsec-Scale Radio Outflows in Radio-Quiet Active Galactic Nuclei Jack F
Rochester Institute of Technology RIT Scholar Works Articles 6-20-2006 A Survey of Kiloparsec-Scale Radio Outflows in Radio-Quiet Active Galactic Nuclei Jack F. Gallimore Bucknell University David Axon Rochester Institute of Technology Christopher P. O'Dea Rochester Institute of Technology Stefi A. Baum Rochester Institute of Technology Alan Pedlar University of Manchester Follow this and additional works at: http://scholarworks.rit.edu/article Recommended Citation Jack F. Gallimore et al 2006 AJ 132 546 https://doi.org/10.1086/504593 This Article is brought to you for free and open access by RIT Scholar Works. It has been accepted for inclusion in Articles by an authorized administrator of RIT Scholar Works. For more information, please contact [email protected]. A Survey of Kiloparsec-Scale Radio Outflows in Radio-Quiet Active Galactic Nuclei Jack F. Gallimore, Department of Physics & Astrronomy, Bucknell University, Lewisburg, PA 17837 USA, [email protected] David J. Axon and Christopher P. O’Dea, Department of Physics, Rochester Institute of Technology, 84 Lomb Memorial Drive, Rochester, NY 14623 Stefi A. Baum, Chester F. Carlson Center for Imaging Science, Rochester Institute of Technology, 54 Lomb Memorial Drive, Rochester, NY 14623 Alan Pedlar, The University of Manchester, Jodrell Bank Observatory, Macclesfield, Cheshire SK11 9DL ABSTRACT Seyfert galaxies commonly host compact jets spanning 10—100 pc scales, but larger structures are resolved out in long baseline, aperture synthesis surveys. Previous, targeted studies showed that kiloparsec-scale radio structures (KSRs) may be a common feature of Seyfert and LINER galaxies, and the origin of KSRs may be starburst or AGN. -
An Atlas of Calcium Triplet Spectra of Active Galaxies 3
Mon. Not. R. Astron. Soc. 000, 000–000 (0000) Printed 1 December 2018 (MN LATEX style file v2.2) An atlas of Calcium triplet spectra of active galaxies A. Garcia-Rissmann1⋆, L. R. Vega1,2†, N. V. Asari1‡, R. Cid Fernandes1§, H. Schmitt3,4¶, R. M. Gonz´alez Delgado5k, T. Storchi-Bergmann6⋆⋆ 1 Depto. de F´ısica - CFM - Universidade Federal de Santa Catarina, C.P. 476, 88040-900, Florian´opolis, SC, Brazil 2 Observatorio Astron´omico de C´ordoba, Laprida 854, 5000, C´ordoba, Argentina 3 Remote Sensing Division, Code 7210, Naval Research Laboratory, 4555 Overlook Avenue, SW, Washington, DC 20375 4 Interferometric Inc., 14120 Parke Long Court, 103, Chantilly, VA20151 5 Instituto de Astrof´ısica de Andaluc´ıa (CSIC), P.O. Box 3004, 18080 Granada, Spain 6 Instituto de F´ısica, Universidade Federal do Rio Grande do Sul, C.P. 15001, 91501-970, Porto Alegre, RS, Brazil 1 December 2018 ABSTRACT We present a spectroscopic atlas of active galactic nuclei covering the region around the λλ8498, 8542, 8662 Calcium triplet (CaT). The sample comprises 78 ob- jects, divided into 43 Seyfert 2s, 26 Seyfert 1s, 3 Starburst and 6 normal galaxies. The spectra pertain to the inner ∼ 300 pc in radius, and thus sample the central kine- matics and stellar populations of active galaxies. The data are used to measure stellar velocity dispersions (σ⋆) both with cross-correlation and direct fitting methods. These measurements are found to be in good agreement with each-other and with those in previous studies for objects in common. The CaT equivalent width is also measured. -
Flat Galaxy - Constellation
Flat Galaxy - Constellation A B C D E F G H I J K L 1 Const. Object ID Other ID RA Dec Size (arcmin) Mag Urano. Urano. Millennium Notes 2 RFGC NGC hh mm ss dd mm ss Major Minor 1st Ed. 2nd Ed. 3 And 152 UGC 433 00 41 03.6 +31 43 59.0 2.1 0.3 15.0 90 62 149 Vol I Note: 4 Ant 1682 IC 2531 09 59 55.4 -29 37 02.0 6.1 0.7 13.0 365 170 899 Vol II Note: Dust lane 5 Ant 1678 ESO 435-G019 09 59 04.8 -30 15 00.0 3.3 0.4 14.1 365 170 899 Vol II Note: In pair 6 Ant 1747 ESO 436-G001 10 12 47.9 -27 50 28.0 2.9 0.3 14.7 324 151 876 Vol II Note: Star proj. near the centre 7 Aps 2864 IC 4484 14 47 44.2 -73 18 19.0 2.9 0.3 14.8 467 216 1010 Vol II Note: Two-layers. Dust lane 8 Aqr 3651 MCG-1-53-12 20 49 52.8 -07 01 18.0 3.5 0.3 14.8 299 124 1312 Vol III Note: Dust lane 9 Ara 3238 ESO 138-G014 17 07 00.1 -62 04 59.0 5.0 0.4 13.9 454 207 1511 Vol III Note: Star projected. Knots 10 Ari 558 UGC 2082 02 36 16.3 +25 25 25.0 5.9 0.8 13.2 130 79 167 Vol I Note: 11 Ari 547 UGC 1999 02 31 52.6 +19 09 11.0 4.0 0.6 14.1 130 79 191 Vol I Note: Dust patches.Wavy.Curved W end 12 Ari 504 UGC 1817 02 21 31.2 +14 11 53.0 2.5 0.2 15.0 174 99 215 Vol I Note: 13 Boo 2747 NGC 5529 14 15 34.3 +36 13 36.0 6.4 0.7 13.1 110 52 627 Vol II Note: Dust lane 14 Boo 2761 UGC 9169 14 19 45.6 +09 21 47.0 5.2 0.7 13.3 197 89 720 Vol II Note: Single condensations 15 Boo 2774 UGC 9242 14 25 21.6 +39 32 24.0 5.7 0.3 13.9 77 52 606 Vol II Note: 16 Boo 2776 UGC 9249 14 27 00.0 +08 41 03.0 2.8 0.3 14.5 197 89 743 Vol II Note: 17 Boo 2826 NGC 5714 14 38 12.0 +46 38 20.0 3.1 0.4 14.5 77 36 586 Vol II Note: Dust. -
7.5 X 11.5.Threelines.P65
Cambridge University Press 978-0-521-19267-5 - Observing and Cataloguing Nebulae and Star Clusters: From Herschel to Dreyer’s New General Catalogue Wolfgang Steinicke Index More information Name index The dates of birth and death, if available, for all 545 people (astronomers, telescope makers etc.) listed here are given. The data are mainly taken from the standard work Biographischer Index der Astronomie (Dick, Brüggenthies 2005). Some information has been added by the author (this especially concerns living twentieth-century astronomers). Members of the families of Dreyer, Lord Rosse and other astronomers (as mentioned in the text) are not listed. For obituaries see the references; compare also the compilations presented by Newcomb–Engelmann (Kempf 1911), Mädler (1873), Bode (1813) and Rudolf Wolf (1890). Markings: bold = portrait; underline = short biography. Abbe, Cleveland (1838–1916), 222–23, As-Sufi, Abd-al-Rahman (903–986), 164, 183, 229, 256, 271, 295, 338–42, 466 15–16, 167, 441–42, 446, 449–50, 455, 344, 346, 348, 360, 364, 367, 369, 393, Abell, George Ogden (1927–1983), 47, 475, 516 395, 395, 396–404, 406, 410, 415, 248 Austin, Edward P. (1843–1906), 6, 82, 423–24, 436, 441, 446, 448, 450, 455, Abbott, Francis Preserved (1799–1883), 335, 337, 446, 450 458–59, 461–63, 470, 477, 481, 483, 517–19 Auwers, Georg Friedrich Julius Arthur v. 505–11, 513–14, 517, 520, 526, 533, Abney, William (1843–1920), 360 (1838–1915), 7, 10, 12, 14–15, 26–27, 540–42, 548–61 Adams, John Couch (1819–1892), 122, 47, 50–51, 61, 65, 68–69, 88, 92–93, -
An Analysis of the Environment and Gas Content of Luminous Infrared Galaxies
Abstract Title of Dissertation: An Analysis of the Environment and Gas Content of Luminous Infrared Galaxies Bevin Ashley Zauderer, Doctor of Philosophy, 2010 Dissertation directed by: Professor Stuart N. Vogel Department of Astronomy Luminous and ultraluminous infrared galaxies (U/LIRGs) represent a population among the most extreme in our universe, emitting an extraordinary amount of energy at infrared wavelengths from dust heated by prolific star formation and/or an active galactic nucleus (AGN). We present three investigations of U/LIRGs to better understand their global environment, their interstellar medium properties, and their nuclear region where molecular gas feeds a starburst or AGN. To study the global environment, we compute the spatial cluster-galaxy amplitude, Bgc, for 76 z < 0.3 ULIRGs. We find the environment of ULIRGs is similar to galaxies in the field. Comparing our results with other galactic populations, we conclude that ULIRGs might be a phase in the lives of AGNs and QSOs, but not all moderate-luminosity QSOs necessarily pass through a ULIRG phase. To study the interstellar medium properties, we observe H I and other spectral lines in 77 U/LIRGs with the Arecibo telescope. We detect H I in emission or absorption in 61 of 77 galaxies, 52 being new detections. We compute the implied gas mass for galaxies with emission, and optical depths and column densities for the seven sources with absorption detections. To study the molecular gas in the nuclear region of LIRG Arp 193, sub-arcsecond scale angular resolution is required and a method of atmospheric phase correction imperative. We present results of a large experiment observing bright quasars to test the limitations of the Combined Array for Research in Millimeter Astronomy’s Paired Antenna Calibration System (C-PACS) for atmospheric phase correction.