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NGC 1068 (Spiral Galaxy, M77)


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NGC 1068, M77
Spiral Galaxy (渦巻銀河)
Gx Sb/P


別名 (Other names)
PGC 10266, UGC 2188, Messier 77, Cetus A, Arp 37

明るさ (Brightness)
8.9等級

星座 (Constellation)
くじら座 (Cet) (Cetus)

距離 (Distance)
4,700万光年 (47 million light-years)

NGC 1068 (M77) is a spiral galaxy located 47 million light years from the Earth in the constellation Cetus.

NGC 1068 (Spiral Galaxy, M77) : Picture

Messier 77
Messier 77
(C) NASA, ESA, André van der Hoeven
Face-on spiral galaxy M77 lies a mere 47 million light-years away toward the aquatic constellation Cetus. At that estimated distance, the gorgeous island universe is about 100 thousand light-years across. Also known as NGC 1068, its compact and very bright core is well studied by astronomers exploring the mysteries of supermassive black holes in active Seyfert galaxies. M77 is also seen at x-ray, ultraviolet, infrared, and radio wavelengths. But this sharp visible light image based on Hubble data follows its winding spiral arms traced by obscuring dust clouds and red-tinted star forming regions close in to the galaxy's luminous core.

M77
The Outskirts of M77
(C) Ken Crawford (Rancho Del Sol Observatory)

M77
M77
(C) Francois and Shelley Pelletier/Adam Block/NOAO/AURA/NSF

NGC 1068
The central region of NGC 1068
(C) ESO
It illustrates the new insight into the central region of the active galaxy NGC 1068, at increasing magnification. Image a (left) A colour composite of NGC 1068, obtained with the Hubble Space Telescope (HST); showing stellar light in blue, oxygen ionized by the active nucleus in yellow, and inonized hydrogen in red. Image b (middle) is a VLTI image by MIDI at wavelength 8.7 µm, penetrating the dust cloud and showing the central structures in great detail. Image c (right) is a sketch of the dust structure of the innermost region. It contains a central hot component (at least 500°C; yellow), marginally resolved by the VLTI observations in the North-South direction (i.e. in the vertical direction in this image). It is surrounded by a larger warm component (~50°, red) that is well resolved. The arrows at the upper left indicate the directions of the two VLTI baselines and the corresponding resolution (image sharpness) at the central observed wavelength (10.5 µm).

The Inner Part of an Active Galactic Nucleus
The Inner Part of an Active Galactic Nucleus (artist's Impression)
(C) ESO
Artist's impression of an active galaxy that has jets. The central engine is thought to be a supermassive black hole surrounded by an accretion disc and enshrouded in a dusty doughnut-shaped torus. The torus of dust and gas can be seen orbiting a flatter disc of swirling gas. In the centre, the supermassive black hole is surrounded by a flat accretion disc of rapidly orbiting material. The jets are emitted at right angles from the plane of the disc. Courtesy Aurore Simonnet, Sonoma State University.

Messier 77
Wide-field image of Messier 77
(C) NASA, ESA, Digitized Sky Survey 2
This image from the Digitized Sky Survey shows spiral galaxy Messier 77 and its surroundings.

Messier 77 M77
Messier 77
(C) NASA
M77
(C) Ken Crawford
M77 M77
M77
(C) NOAO
M77: Spiral with a Strange Glow
(C) UIT, NASA
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NGC 1068 (Spiral Galaxy, M77) : Movie

Zooming in on Messier 77
This video zooms in on spiral galaxy Messier 77. The sequence begins with a view of the night sky near the constellation of Cetus. It then zooms through observations from the Digitized Sky Survey 2, and ends with a view of the galaxy obtained by Hubble.

Panning across Messier 77
This video pans across the sky near to spiral galaxy Messier 77 in the constellation of Cetus, ending on a view of the famous object itself. M 77 is a highly-studied galaxy, with an active black hole at its centre and regions of bright star formation dotted along its loosely-wound arms.
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