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Related papers: Modelling the ENLR in NGC1068

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The biconical radiation pattern extending from an active galactic nucleus (AGN) may strongly photoionize the circumnuclear interstellar medium (ISM) and stimulate emission from the narrow line region (NLR). Observations of the NLR may…

We have investigated the physical conditions in the narrow-line region (NLR) of M51 using long-slit spectra obtained with the Space Telescope Imaging Spectrograph (STIS) aboard the Hubble Space Telescope (HST) and 3.6 cm radio continuum…

Astrophysics · Physics 2009-11-10 L. D. Bradley , M. E. Kaiser , W. A. Baan

We present the results from a detailed kinematic analysis of both ground-based, and Hubble Space Telescope/Faint Object Camera long-slit spectroscopy at sub-arcsec spatial resolution, of the narrow-line region of NGC 4151. In agreement with…

Astrophysics · Physics 2009-10-31 Claudia Winge , David J. Axon , F. D. Macchetto , A. Capetti , A. Marconi

We map the kinematics of the inner (200 pc) narrow-line region (NLR) of the Seyfert 2 galaxy NGC 1068 using the instrument NIFS and adaptative optics at the Gemini North Telescope. Channel maps and position-velocity diagrams are presented…

Astrophysics of Galaxies · Physics 2015-06-22 F. K. B. Barbosa , T. Storchi-Bergmann , P. McGregor , T. B. Vale

Motivated by the X-ray properties of the galaxy NGC 3065, we have obtained new optical spectra which reveal that it has a low-ionization nuclear emission-line region (LINER) as well as broad Balmer emission lines, establishing it as an…

Astrophysics · Physics 2009-11-06 Michael Eracleous , Jules P. Halpern

Obscured active galactic nuclei (AGNs) are thought to be very common in the Universe. Observations and surveys have shown that the number of sources increases for near galaxies and at the low-luminosity regime (the so-called LLAGNs).…

We dissect the kinematics and morphology of the molecular gas within the near-nuclear region of NGC 1068 to understand the mechanisms in the central AGN that might be fueling it, and the impact of its energy output on the surrounding…

We present results about the distribution and kinematics of the molecular environment of the AGN in NGC1068, over a 1.5'' x 3.5'' region around the central engine in NGC1068, derived from H2 line emission detected with ISAAC at VLT/ANTU on…

Astrophysics · Physics 2009-11-06 D. Alloin , E. Galliano , J. G. Cuby , O. Marco , D. Rouan , Y. Clenet , G. L. Granato , A. Franceschini

We present Wide Field Spectrograph (WiFeS) integral field spectroscopy and HST FOS spectroscopy for the LINER galaxy NGC 1052. We infer the presence of a turbulent accretion flow forming a small-scale accretion disk. We find a large-scale…

Ground based long slit spectroscopic observations of the nuclear region of NGC 5252, and Hubble Space Telescope (HST) Faint Object Spectrograph (FOS) spectra of the nucleus and two bright knots located 0.36" NE and 0.31" SW from it, show…

Astrophysics · Physics 2007-05-23 A. C. Goncalves , P. Veron , M. -P. Veron-Cetty

We study the prototypical Seyfert 2 galaxy, Markarian 3, based on imaging and high-resolution spectroscopy observations taken by the Chandra X-ray Observatory. We construct a deconvolved X-ray image, which reveals the S-shaped morphology of…

High Energy Astrophysical Phenomena · Physics 2017-10-18 Akos Bogdan , Ralph P. Kraft , Daniel A. Evans , Felipe Andrade-Santos , William R. Forman

We present a detailed spectral and imaging analysis of the central $15''$ radius ($\sim 7.5 \text{ kpc}$) region of the merger galaxy NGC 6240 that makes use of all the available \textit{Chandra}-ACIS data ($0.3 - 3 \text{ keV}$ effective…

Astrophysics of Galaxies · Physics 2022-03-30 A. Paggi , G. Fabbiano , E. Nardini , M. Karovska , M. Elvis , J. Wang

There is now convincing evidence that the intensity of HCN molecular line emission is enhanced around active galactic nuclei. In this paper we examine the specific case of the Seyfert galaxy NGC3227, for which there are subarcsecond…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-03 R. Davies , D. Mark , A. Sternberg

We obtained optical spectra of the counterpart of the ultraluminous X-ray source NGC 5408 X-1 using the FORS spectrograph on the VLT. The spectra show strong high excitation emission lines, He{\sc ii} $\lambda$4686 and [Ne{\sc V}]…

High Energy Astrophysical Phenomena · Physics 2010-01-15 Philip Kaaret , Stephane Corbel

We present ALMA ~0.02"-resolution observations of the nucleus of the nearby (~14 Mpc) type-2 AGN NGC 1068 at HCN/HCO+/HNC J=3-2 lines, as well as at their 13C isotopologue and vibrationally excited lines, to scrutinize the…

The central region of NGC 1068 is one of the closest and most studied Active Galactic Nucleus. It is known to be of type 2, meaning that its accretion disk is obscured by a large amount of dust and gas. The main properties of the obscuring…

We briefly review and extend our discussion of the ROSAT detection of the extraordinarily luminous (>10^{42} erg/s) partly extended (> 30 kpc diameter) X-ray emission from the double-nucleus ultraluminous infrared galaxy NGC 6240. The ROSAT…

Astrophysics · Physics 2007-05-23 Hartmut Schulz , Stefanie Komossa , Jochen Greiner

We present near-infrared emission line images of the circumnuclear ring in NGC1068. We have measured the Br_gamma fluxes in a number of star forming complexes and derived extinctions for each of these by comparison with H_alpha. We…

Astrophysics · Physics 2009-10-30 Richard I. Davies , Hajime Sugai , Martin J. Ward

We present the first Chandra/ACIS imaging study of the circumnuclear region of the nearby Seyfert galaxy NGC 1365. The X-ray emission is resolved into point-like sources and complex, extended emission. The X-ray morphology of the extended…

Astrophysics of Galaxies · Physics 2011-02-11 Junfeng Wang , G. Fabbiano , M. Elvis , G. Risaliti , J. M. Mazzarella , J. H. Howell , S. Lord

We have combined HST/FOS and ground-based spectra of the Seyfert 1 galaxy NGC 5548 to study the narrow emission lines over the 1200 -- 10,000 angstrom region. All of the spectra were obtained when the broad emission line and continuum…