English
Related papers

Related papers: Diffraction-Limited Imaging and Photometry of NGC …

200 papers

We have obtained mid-infrared images of the nucleus of NGC 1068 from the Hale 5 m telescope at Mt. Palomar with diffraction-limited resolution and high sensitivity at 8.8, 10.3, and 12.5 microns. Deconvolved images show that the infrared…

Astrophysics · Physics 2009-10-30 J. J. Bock , K. A. Marsh , M. E. Ressler , M. W. Werner

We present the first long-slit spectra of the Seyfert 2 galaxy NGC 1068 obtained by the Space Telescope Imaging Spectrograph (STIS); the spectra cover the wavelength range 1150 - 10,270 Angstroms at a spatial resolution of 0.05 - 0.1 arcsec…

Astrophysics · Physics 2009-10-31 D. M. Crenshaw , S. B. Kraemer

We present the first K-band bispectrum speckle interferometry of NGC 1068 with an angular resolution of 76 mas (~5.5pc). This angular resolution allows us to attribute the measured flux to only one of the nuclear sources seen at radio…

Astrophysics · Physics 2007-05-23 M. Wittkowski , Y. Balega , T. Beckert , W. J. Duschl , K. -H. Hofmann , G. Weigelt

We present near-infrared interferometric data on the Seyfert 2 galaxy NGC 1068, obtained with the GRAVITY instrument on the European Southern Observatory Very Large Telescope Interferometer. The extensive baseline coverage from 5 to 60…

We report the first simultaneous zJHK spectroscopy on the archetypical Seyfert 2 Galaxy NGC 1068 covering the wavelength region 0.9 to 2.4 micron. The slit, aligned in the NS direction and centred in the optical nucleus, maps a region 300…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Lucimara Martins , Alberto Rodríguez-Ardila , Ronaldo de Souza , Ruth Gruenwald

We report sub arc-second resolution X-ray imaging-spectroscopy of the archetypal type 2 Seyfert galaxy NGC 1068 with the Chandra X-ray Observatory. The observations reveal the detailed structure and spectra of the 13 kpc-extent nebulosity…

Astrophysics · Physics 2009-11-06 A. J. Young , A. S. Wilson , P. L. Shopbell

We present diffraction-limited IR images at 11.2 and 20.5 microns of the central 6''x6'' region in NGC 1068, collected with the CAMIRAS instrument mounted at the f/36 IR focus of the CFHT/Hawaii 3.6m telescope and at the f/35 IR focus of…

Astrophysics · Physics 2007-05-23 D. Alloin , E. Pantin , P. O. Lagage

We present spatially-resolved, near-diffraction-limited 10 micron spectra of the nucleus of the Seyfert 2 galaxy NGC 1068, obtained with Michelle, the mid-IR imager and spectrometer on the 8.1 m Gemini North telescope. The spectra cover the…

Astrophysics · Physics 2009-11-13 R. E. Mason , T. R. Geballe , C. Packham , N. A. Levenson , M. Elitzur , R. S. Fisher , E. Perlman

Mid-infrared observations of the central source of NGC 1068 have been obtained with a spatial resolution in the deconvolved image of 0.1" (~ 7pc). The central source is extended by ~1" in the north-south direction but appears unresolved in…

We present spatially resolved Chandra HETGS observations of the Seyfert 2 galaxy NGC 1068. X-ray imaging and high resolution spectroscopy are used to test the Seyfert unification theory. Fe K-alpha emission is concentrated in the nuclear…

Astrophysics · Physics 2009-11-07 P. M. Ogle , T. Brookings , C. R. Canizares , J. C. Lee , H. L. Marshall

We present spatially resolved far-UV spectra (912-1840 A) of NGC 1068 obtained using the Hopkins Ultraviolet Telescope (HUT) during the March 1995 Astro-2 mission. Three spectra of this prototypical Seyfert 2 galaxy were obtained through a…

Astrophysics · Physics 2009-10-31 John P. Grimes , Gerard A. Kriss , Brian R. Espey

We performed stellar population synthesis on the nuclear and extended regions of NGC 1068 by means of near-infrared spectroscopy to disentangle their spectral energy distribution components. This is the first time that such a technique is…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 Lucimara Martins , Rogério Riffel , Alberto Rodríguez-Ardila , Ruth Gruenwald , Ronaldo de Souza

The physical conditions in the inner narrow line region (NLR) of the Seyfert 2 galaxy, NGC 1068, are examined using ultraviolet and optical spectra and photoionization models. The spectra are Hubble Space Telescope (HST) Harchive data…

Astrophysics · Physics 2009-10-30 Steven B. Kraemer , Jose R. Ruiz , D. Michael Crenshaw

The physical conditions near the optical continuum peak (``hot spot'') in the inner narrow line region (NLR) of the Seyfert 2 galaxy, NGC 1068. Spectra were taken with HST/STIS through the 0.1X52 arcsec slit, covering the full STIS 1200 to…

Astrophysics · Physics 2009-10-31 S. B. Kraemer , D. M. Crenshaw

We present the results of a series of observations of the near- and mid-infrared polarisation properties of the Seyfert 2 galaxy NGC1068. Our data agree well with previously published results in showing the need for a separate polarisation…

Astrophysics · Physics 2011-03-10 S. L. Lumsden , T. J. T. Moore , C. Smith , T. Fujiyoshi , J. Bland-Hawthorn , M. J. Ward

The central kpc region of the low luminosity type-1 Seyfert galaxy NGC 1097 has been observed in the CO(1-0) and HCN(1-0) lines with the Nobeyama Millimeter Array and the NRO 45 m telescope. We find a striking enhancement of the HCN…

Astrophysics · Physics 2015-06-24 K. Kohno , S. Ishizuki , S. Matsushita , B. Vila-Vilaro , R. Kawabe

(abridged) Based on observations of the Seyfert nucleus in NGC1068 with ASCA, RXTE and BeppoSAX, we report the discovery of a flare (increase in flux by a factor of ~1.6) in the 6.7 keV Fe K line component between observations obtained 4…

Astrophysics · Physics 2009-11-07 Edward Colbert , Kim Weaver , Julian Krolik , John Mulchaey , Richard Mushotzky

We report moderate resolution 3-5 micron spectroscopy of the nucleus of NGC 1068 obtained at 0.3 arcsec (20 pc) resolution with the spectrograph slit aligned approximately along the ionization cones of the AGN. The deconvolved FWHM of the…

Cosmology and Nongalactic Astrophysics · Physics 2011-02-11 T. R. Geballe , R. E. Mason , A. Rodríguez-Ardila , D. J. Axon

We present diffraction-limited near-IR images in J, H and K of the nucleus of NGC 1068, obtained with the Adaptive Optics system {Pueo} at CFHT. The achieved resolution (0.12") reveals several components, particularly prominent on the [J-K]…

Astrophysics · Physics 2007-05-23 D. Rouan , F. Rigaut , D. Alloin , R. Doyon , O. Lai , D. Crampton , E. Gendron , R. Arsenault

We have observed the polarized light at 2 micron in the center of NGC 1068 with HST NICMOS Camera 2. The nucleus is dominated by a bright, unresolved source, polarized at a level of 6.0 pm 1.2% with a position angle of 122degr pm 1.5degr.…

‹ Prev 1 2 3 10 Next ›