NGC 1052

Source: Wikipedia, the free encyclopedia.
J2000 epoch)
Right ascension02h 41m 04.79851s[1]
Declination−08° 15′ 20.7517″[1]
Redshift0.004930[1]
Heliocentric radial velocity1474 ± 26 km/s[1]
Distance62.0 Mly (19.00 Mpc)[2]
Group or clusterNGC 1052 Group[1]
Apparent magnitude (V)10.47[2]
Apparent magnitude (B)11.41[2]
Characteristics
TypeE4[2]
Apparent size (V)3.0′ × 2.1′[2]
Other designations
MCG -01-07-034, PGC 10175[1]

NGC 1052 is an

Cetus. It was discovered on January 10, 1785 by the astronomer William Herschel.[3] It is a member of the eponymous NGC 1052 Group.[1]

Features

light years from the Milky Way,[4] and has a LINER-type active galactic nucleus which signals the intense starburst activity in the galaxy's center[5] that were confirmed with observations with better resolution showing a number of star-forming regions and young star clusters.[6]

NGC 1052 shows also two small

neutral hydrogen, far larger than the galaxy itself.[7] Additionally, the stars and the ionized gas rotate along different axes.[8] All these features suggesting a gas-rich galaxy collided and merged with it 1 billion years ago producing all the above features.[6]

The shape of NGC 1052 is thought to be a

triaxial ellipsoid. The longest axis of the ellipsoid is probably aligned at a position angle of −41°, which is the axis around which the ionized gas would be rotating.[8]

A scale image of NGC 1052 and its satellite galaxies is available at the reference.[9]

Central black hole

NGC 1052 hosts a rapidly rotating supermassive black hole with a mass of 154 million M☉[10] with a large magnetic field of 2.6 Tesla,[11] which, according to astronomer Anne-Kathrin Baczko, the leader of the team that made this discovery, provides enough magnetic energy to power the previously mentioned twin relativistic jets.[12]

This black hole is a promising target for imaging by the Event Horizon Telescope.[11] The location of the black hole in NGC 1052 was by 2016 the most precisely known in the universe, with the exception of Sagittarius A*, the supermassive black hole found at the heart of our own galaxy.[12][11]

See also

  • NGC 1052-DF2, a galaxy assumed to be associated with NGC 1052, and which appears to have little or no dark matter
  • NGC 1052-DF4, another galaxy assumed to be associated with NGC 1052, and which appears to have little or no dark matter[13]

References

  1. ^ a b c d e f g "NGC 1052". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2021-02-19.
  2. ^
    S2CID 119085482
    .
  3. ^ Seligman, Courtney. "New General Catalogue objects: NGC 1050 - 1099". cseligman.com. Retrieved 2021-02-19.
  4. S2CID 17628238
    .
  5. S2CID 16977888
    .
  6. ^
    S2CID 119232954
    .
  7. ^ "Notes for NGC 1052". NED. Cal Tech.
  8. ^
    doi:10.1086/163985
    .
  9. ^ Dokkum, Pieter. "image of NGC 1052". twitter.
  10. S2CID 464273
    .
  11. ^ a b c "Event Horizon Telescope: Moving towards a close-up of a black hole and its jets". Chalmers University of Technology. Retrieved 19 December 2024.
  12. ^ a b "Twin jets pinpoint the heart of an active galaxy". phys.org. Retrieved 1 April 2018.
  13. S2CID 102486855
    .
  • Media related to NGC 1052 at Wikimedia Commons


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