Hot Very Small dust Grains in NGC 1068 seen in jet induced structures thanks to VLT/NACO adaptive optics

@article{Rouan2004HotVS,
  title={Hot Very Small dust Grains in NGC 1068 seen in jet induced structures thanks to VLT/NACO adaptive optics},
  author={Daniel Rouan and François Lacombe and Eric Gendron and Damien Gratadour and Yann Cl{\'e}net and Anne-Marie Lagrange and David Mouillet and Catherine Boisson and G'erard Rousset and Laurent M. Mugnier and Niranjan Thatte and Reinhard Genzel and Pierre Gigan and Robin Arsenault and Pierre Y. Kern},
  journal={Astronomy and Astrophysics},
  year={2004},
  volume={417}
}
We present K, L and M diffraction-limited images of NGC 1068 obtained with NAOS+CONICA at VLT/YEPUN over a 3.5" field around the central engine. Hot dust (Tcol = 550-650 K) is found in three different regions : (a) in the true nucleus, seen as a slightly NS elongated, core of extremely hot dust, "resolved" in K and L with respective diameters of ~5 pc and 8.5 pc ; (b) along the NS direction, as a "spiral arm" and a southern tongue ; (c) as a set of parallel elongatednodules ("wave-like… 

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References

SHOWING 1-10 OF 18 REFERENCES

VLT 3-5 micron spectroscopy and imaging of NGC 1068: Does the AGN hide nuclear starburst activity?

Near-infrared 3-5 micron spectroscopic and imaging observations of NGC 1068 have been obtained with the VLT at an angular resolution of ∼0.4 arcsec. The (L − M) color index has been derived as a

High angular resolution K-band spectroscopy of the nucleus of NGC 1068 with PUEO-GRIF (CFHT)

We provide new high angular resolution K-band spectroscopic observations of the nucleus of NGC 1068 obtained with the new 3-D spectrograph GriF coupled to PUEO, the CFHT adaptive optics system.

Near-IR 2D-spectroscopy of the 4''x 4'' region around the Active Galactic Nucleus of NGC 1068 with ISAAC/VLT

New near-IR long slit spectroscopic data obtained with ISAAC on VLT/ANTU (ESO/Paranal) complement and extend our previously published near-IR data (Alloin et al. 2001) to produce Br and H2 emission

High Spatial Resolution Imaging of NGC 1068 in the Mid-Infrared

Mid-infrared observations of the central source of NGC 1068 have been obtained with a spatial resolution in the deconvolved image of 0.″1 (∼7 pc). The central source is extended by ∼1″ in the

The Nature of the Nuclear H2O Masers of NGC 1068: Reverberation and Evidence for a Rotating Disk Geometry

We report new (1995) Very Large Array (VLA) observations and (1984-1999) Effelsberg 100 m monitoring observations of the 22 GHz H2O maser spectrum of the Seyfert 2 galaxy NGC 1068. The sensitive VLA

Revisiting the location and environment of the central engine in NGC 1068

We revisit in this paper the location of the various components observed in the AGN of NGC 1068. Discrepancies between previously published studies are explained, and a new measurement for the

Bars and Warps Traced by the Molecular Gas in the Seyfert 2 Galaxy NGC 1068

We present new interferometer observations of the 12CO (1-0) and 12CO (2-1) line emission of NGC 1068 with a resolution of 0.″7. The molecular gas in the inner 5'' is resolved into a ring with two

The Nuclear Stellar Core, the Hot Dust Source, and the Location of the Nucleus of NGC 1068

We present new near-infrared speckle and adaptive optics imaging and integral field spectroscopy of the nuclear region of NGC 1068. Ninety-four percent of the K-band light in the central 1''

Hubble Space Telescope Imaging Polarimetry of the Inner Nuclear Region of NGC 1068

We present the results of further Hubble Space Telescope (HST) imaging polarimetry of the inner region of NGC 1068 taken with the COSTAR corrected Faint Object Camera (FOC) in the ultraviolet

Investigating the central engine of ultraluminous infrared galaxies: near infrared imaging

We present 0.5-arcsec-resolution near-infrared images of six ultraluminous infrared galaxies with known redshifts. Six of the eight bright nuclei are resolved on kiloparsec scales, suggesting that