NGC 3783
11h 39m 01.721s, −-37° 44′ 18.60″| NGC 3783 | |
|---|---|
| Group or cluster | NGC 3783 group |
| Apparent magnitude (V) | 13.43 |
| Characteristics | |
| Type | SBa[5] |
| Apparent size (V) | 1′.9 × 1′.7[5] |
| Notable features | Seyfert 1 |
| Other designations | |
| MCG -06-26-004, PGC 36101[6] | |
NGC 3783 is a
The source of the activity in this galaxy is a rapidly rotating supermassive black hole, which is located at the core and is surrounded by an accretion disk of dust.[9] The estimated mass of this black hole, from reverberation mapping, is about 2.8 million times the mass of the Sun.[10] Interferometric observations yield an inner radius of 0.52 ± 0.16 ly (0.16 ± 0.05 pc) for the orbiting torus of dust.[11]
This is a member of a loose association of 47 galaxies known as the NGC 3783 group. Located at a mean distance of 117 million light-years (36 Mpc), the group is centered at coordinates α = 11h 37m 12s, δ = –37° 30′ 57.6″: equivalent to about 870×103 ly (267 kpc) from NGC 3783. The NGC 3783 group has a mean velocity of 2,903 ± 26 km/s with respect to the Sun and a velocity dispersion of 190 ± 24 km/s. The diffuse X-ray emission of the group is roughly centered on the galaxy NGC 3783.[12]
Gallery
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NGC 3783 as seen by the legacy surveys. The bright star on the lower left is HD 101274 -
This video shows an artist's impression of the dusty wind emanating from the black hole at the centre of galaxy NGC 3783
References
- ^ S2CID 18913331.
- doi:10.1086/191730.
- S2CID 119223679.
- ^ S2CID 39630754.
- ^ Bibcode:1999A&A...348..685G.
- ^ "NGC 3783". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-02-19.
- ^ "The active galaxy NGC 3783 in the constellation of Centaurus", European Southern Observatory, June 20, 2013, retrieved 2013-06-29.
- ISBN 978-0521820486.
- S2CID 59522696.
- S2CID 236777045.
- S2CID 118540180.
- S2CID 10340132.
External links
- Roy, Steve; et al. (May 25, 2000), "Chandra Clocks Million Mile Per Hour Wind Expanding From Vicinity of Giant Black Hole", Chandra Press Room, p. 13, Bibcode:2000cxo..pres...13., retrieved June 29, 2013
- Hönig, Sebastian; et al. (June 20, 2013), "Dusty Surprise Around Giant Black Hole", European Southern Observatory, retrieved June 29, 2013
