NGC 2768

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NGC 2768
Dusty detail in elliptical galaxy NGC 2768.jpg
NGC 2768 by Hubble Space Telescope.
Observation data (J2000 epoch)
Constellation Ursa Major
Right ascension 09h 11m 37.5s [1]
Declination 60° 02′ 14″ [1]
Redshift 1353 ± 5 km/s [1]
Distance 63.5 ± 11.8 Mly (19.5 ± 3.6 Mpc) [1]
Apparent magnitude  (V)9.9
Characteristics
Type S0 1/2 [1]
Apparent size  (V)8.1′ × 4.3′ [1]
Other designations
UGC 4821, PGC 25915 [1]

NGC 2768 is a lenticular galaxy located in the constellation of Ursa Major. It is at a distance of 65 million light years from Earth. NGC 2768 is an example of a Seyfert galaxy, an object with a supermassive black hole at its centre. A dusty structure is encircling the centre of the galaxy, forming a knotted ring around the galaxy's brightly glowing middle. This ring lies perpendicular to the plane of NGC 2768 itself, stretching up and out of the galaxy. The dust in NGC 2768 forms an intricate network of knots and filaments. [2]

Contents

In the centre of the galaxy are two tiny, S-shaped symmetric jets. These two flows of material travel outwards from the galactic centre along curved paths, and are masked by the tangle of dark dust lanes that spans the body of the galaxy. These jets are a sign of a very active centre, where lies a supermassive black hole. This speeds up and sucks in gas from the nearby space, creating a stream of material swirling inwards towards the black hole known as an accretion disc. This disk throws off material in very energetic outbursts, creating structures like the jets. [2]

NGC 2768 has had one observed Type Ib supernova, designated SN2000ds, which occurred far from the nuclear region. [3]

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<span class="mw-page-title-main">NGC 3393</span> Galaxy in the constellation Hydra

NGC 3393 is a barred spiral galaxy located in the constellation Hydra. It is located at a distance of circa 180 million light-years from Earth, which, given its apparent dimensions, means that NGC 3393 is about 140,000 light-years across. It was discovered by John Herschel on March 24, 1835. It is a Type II Seyfert galaxy. The galaxy is known to host two supermassive black holes, which are the nearest known pair of supermassive black holes to Earth.

References

  1. 1 2 3 4 5 6 7 "NASA/IPAC Extragalactic Database". Results for NGC 2768. Retrieved 2016-01-18.
  2. 1 2 Dusty detail in elliptical galaxy NGC 2768 8 April 2013, ESA/Hubble & NASA
  3. ↑ Hakobyan, A. A.; et al. (June 24, 2008). "Early-type galaxies with core collapse supernovae". Astronomy and Astrophysics. 488 (2): 528–529. arXiv: 0806.4269 . Bibcode:2008A&A...488..523H. doi:10.1051/0004-6361:200809817. S2CID   17273642.


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