gingadan.com

NGC 4696 (Elliptical Galaxy)


Home > Galaxy > NGC4696
Down
Movie

NGC 4696
Elliptical Galaxy (楕円銀河)
Gx E1/P

別名 (Other names)
PGC 43296, MCG -7-26-51, AM 1246-410

明るさ (Brightness)
10.2等級

星座 (Constellation)
ケンタウルス座 (Cen) (Centaurus)

距離 (Distance)
1億5,000万光年 (150 million light-years)

NGC 4696 is an elliptical galaxy located 150 million light years from the Earth in the constellation Centaurus.

NGC 4696 (Elliptical Galaxy) : Picture

NGC 4696 (Elliptical Galaxy)
NGC 4696 (Elliptical Galaxy)
(C) ESA/Hubble and NASA
This picture, taken by Hubble’s Advanced Camera for Surveys, shows NGC 4696, the largest galaxy in the Centaurus Cluster.

The huge dust lane, around 30,000 light-years across, that sweeps across the face of the galaxy makes NGC 4696 look different from most other elliptical galaxies. Viewed at certain wavelengths, strange thin filaments of ionised hydrogen are visible within it. In this picture, these structures are visible as a subtle marbling effect across the galaxy’s bright centre.

NGC 4696 (Elliptical Galaxy)
NGC 4696 (Elliptical Galaxy)
(C) NASA

NGC 4696
NGC 4696: Energy from a Black Hole
(C) X-ray in red - NASA/ CXC/S.Allen (Kavli Inst., Stanford) et al.;
Radio in blue - NRAO/G.Taylor (VLA); Infrared in green - NASA/ESA/W.Harris (McMaster Univ.)
In many cosmic environments, when material falls toward a black hole energy is produced as some of the matter is blasted back out in jets. In fact, such black hole "engines" appear to be the most efficient in the Universe, at least on a galactic scale. This composite image illustrates one example of an elliptical galaxy with an efficient black hole engine, NGC 4696. The large galaxy is the brightest member of the Centaurus galaxy cluster, some 150 million light-years away. Exploring NGC 4696 in x-rays (red) astronomers can measure the rate at which infalling matter fuels the supermassive black hole and compare it to the energy output in the jets to produce giant radio emitting bubbles. The bubbles, shown here in blue, are about 10,000 light-years across. The results confirm that the process is much more efficient than producing energy through nuclear reactions - not to mention using fossil fuels. Astronomers also suggest that as the black hole pumps out energy and heats the surrounding gas, star formation is ultimately shut off, limiting the size of large galaxies like NGC 4696.

Elliptical Galaxies
Chandra X-ray Images of Elliptical Galaxies
(C) NASA/CXC/Stanford U./S.Allen et al.
This set of Chandra images shows hot gas located in the nine different elliptical galaxies studied in this new work. Each of these galaxies shows evidence for cavities in the hot gas that were created by jets from the central black holes.

NGC 4696 (Elliptical Galaxy) NGC 4696 (Elliptical Galaxy)
NGC 4696 (Elliptical Galaxy)
(C) NASA
NGC 4696 (Elliptical Galaxy)
(C) NASA
NGC 4696 NGC4696
NGC 4696 (Radio & X-ray)
(C) NASA/CXC/Stanford U./S.Allen et al.
NGC 4696 (Radio)
(C) NASA/CXC/Stanford U./S.Allen et al.
NGC 4696 NGC 4696
NGC 4696 (Unlabeled)
(C) NASA/CXC/Stanford U./S.Allen et al.
NGC 4696 (Labeled)
(C) NASA/CXC/Stanford U./S.Allen et al.
NGC4696 NGC4696
NGC 4696 (near-infrared)
(C) NASA/ESA/McMaster Univ./W.Harris
NGC 4636 with Scale Bar
(C) NASA/CXC/Stanford U./S.Allen et al.
Up
Up

NGC 4696 (Elliptical Galaxy) : Movie

Up
Home > Galaxy > NGC4696
Up

gingadan.com ブログパーツ