scholarly journals A massive dense gas cloud close to the nucleus of the Seyfert galaxy NGC 1068

2016 ◽  
Vol 68 (6) ◽  
pp. 103 ◽  
Author(s):  
Ray S. Furuya ◽  
Yoshiaki Taniguchi
Keyword(s):  
Seyfert Galaxy ◽  
Dense Gas ◽  
Ngc 1068 ◽  
Gas Cloud

scholarly journals High-resolution radio observations of the Seyfert galaxy NGC 1068

1983 ◽  
Vol 202 (3) ◽  
pp. 647-656 ◽  
Author(s):  
A. Pedlar ◽  
R. V. Booler ◽  
R. E. Spencer ◽  
O. J. Stewart
Keyword(s):  
High Resolution ◽  
Seyfert Galaxy ◽  
Radio Observations ◽  
Ngc 1068

scholarly journals SUBMILLIMETER LINE SPECTRUM OF THE SEYFERT GALAXY NGC 1068 FROM THEHERSCHEL-SPIRE FOURIER TRANSFORM SPECTROMETER

2012 ◽  
Vol 758 (2) ◽  
pp. 108 ◽  
Author(s):  
Luigi Spinoglio ◽  
Miguel Pereira-Santaella ◽  
Gemma Busquet ◽  
Maximilien R. P. Schirm ◽  
Christine D. Wilson ◽  
...  
Keyword(s):  
Fourier Transform ◽  
Seyfert Galaxy ◽  
Line Spectrum ◽  
Fourier Transform Spectrometer ◽  
Ngc 1068

Dark Memories of the Past: Discovery of Ultra-Diffuse Objects around NGC 1068

2018 ◽  
Vol 14 (S344) ◽  
pp. 349-352
Author(s):  
Ichi Tanaka ◽  
Masafumi Yagi ◽  
Yoshiaki Taniguchi
Keyword(s):  
Dwarf Galaxy ◽  
Late Phase ◽  
Seyfert Galaxy ◽  
Imaging Data ◽  
The Past ◽  
Large Loop ◽  
Merger Event ◽  
Ngc 1068 ◽  
Mass Assembly ◽  
A Minor

AbstractWe have searched for a sign of the past dynamical disturbance events on NGC 1068, an archetypical Type-2 Seyfert galaxy, using deep and wide optical imaging data by the Subaru telescope. The data taken by Hyper Suprime-Cam (HSC) as well as the archived data by Suprime-Cam reveal several faint outer structures of the galaxy, most of which were never reported before. We discover three large (re = 3 -5.5 kpc), extremely diffuse objects (UDOs) within 45 kpc from the center of NGC 1068. We suggest that two of these UDOs are actually a part of a large loop-like structure surrounding NGC 1068. Such an extremely faint loop or stream is the direct evidence for a past minor merger event. The third UDO has a distorted morphology, suggesting that it is under the influence of strong tidal field. Furthermore, we have identified another ultra-diffuse but compact (μ0,r > 25 mag arcsec-2, re ~ 0.8kpc) dwarf galaxy within ~140 kpc from NGC 1068. We speculate that this ultra-diffuse dwarf could be the object related to the ancient tidal disruption event (tidal dwarf) during the early mass assembly period of NGC 1068. We also detect an asymmetric outer one-arm structure emanated from the western edge of the outermost disk of NGC 1068 together with a ripple-like structure at the opposite side. These structures are also expected to arise in a late phase (up to several billion years ago) of a minor merger, according to numerical simulations. Our findings are consistent with the idea that the AGN activity in NGC 1068 is caused by a past minor merger.

A Study of the Seyfert Galaxy NGC 4151

1967 ◽  
Vol 1 (1) ◽  
pp. 7-7 ◽  
Author(s):  
J. B. Oke ◽  
Wallace L. W. Sargent
Keyword(s):  
Continuous Spectrum ◽  
Seyfert Galaxy ◽  
Seyfert Galaxies ◽  
Radio Galaxies ◽  
Emission Lines ◽  
Ngc 4151 ◽  
Broad Emission ◽  
Ngc 1068 ◽  
Stellar Sources ◽  
No Absorption

The small group of known Seyfert galaxies (Seyfert 1943) is of interest because it is clear that some violent activity is occurring in the nucleus, and some of the properties suggest a relationship with quasi-stellar sources. The spectrum of a Seyfert galaxy consists of strong, often very broad, emission lines superposed on a continuous spectrum which in some cases shows no absorption-line features. Two of the galaxies, NGC 1068 and 1275, are radio galaxies and the latter is known to be variable at radio frequencies (Dent 1966).

scholarly journals The Large-Scale Activity in NGC 1068

1989 ◽  
Vol 134 ◽  
pp. 343-344
Author(s):  
J. Bland ◽  
G. N. Cecil
Keyword(s):  
Large Scale ◽  
Physical State ◽  
Seyfert Galaxy ◽  
Optical Emission ◽  
Field Of View ◽  
Ionized Gas ◽  
Nuclear Activity ◽  
Fabry Perot ◽  
Ngc 1068 ◽  
Resolution Study

While NGC 1068 has received much attention in recent years, little is known of the large-scale dynamics and physical state of the ionized gas in this nearby Seyfert galaxy and, in particular, its connection with the nuclear activity. We have used the Hawaii Imaging Fabry-Perot Interferometer (HIFI) at the CFHT to obtain detailed spectrophotometry at 65 kms−1 resolution (FWHM) over the Hα and neighbouring [N II] lines. The final maps are derived from 100 000 fits to spectra taken at 0.4″ increments over a 200″ field-of-view. (A higher resolution study which concentrates on the circumnuclear, optical emission and its relation to the radio jet is presented at this conference by Cecil & Bland.)

CCD photometry of Seyfert galaxy NGC 1068

1985 ◽  
Vol 90 ◽  
pp. 441 ◽  
Author(s):  
R. Schild ◽  
R. Tresch-Fienberg ◽  
J. Huchra
Keyword(s):  
Seyfert Galaxy ◽  
Ccd Photometry ◽  
Ngc 1068

An X-ray image of the Seyfert galaxy NGC 1068

1992 ◽  
Vol 391 ◽  
pp. L75 ◽  
Author(s):  
A. S. Wilson ◽  
M. Elvis ◽  
A. Lawrence ◽  
J. Bland-Hawthorn
Keyword(s):  
Seyfert Galaxy ◽  
X Ray ◽  
Ngc 1068
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