NGC 2280

Source: Wikipedia, the free encyclopedia.
74.6 ± 16 Mly (22.9 ± 5.0 Mpc)[1]
Apparent magnitude (V)10.5
Characteristics
TypeSA(s)cd [1]
Apparent size (V)6.3′ × 3.1′[1]
Other designations
UGCA 131, ESO 427- G 002, AM 0642-273, MCG -05-16-020, PGC 19531[1]

NGC 2280 is a

light years from Earth, which, given its apparent dimensions, means that NGC 2280 is about 135,000 light years across. It was discovered by John Herschel on February 1, 1835.[2]

Characteristics

NGC 2280 has a small bright nucleus. The spiral arms emanate from the bulge and are narrow and of high surface magnitude in the inner part of the disk. At the outer disk the arms become broader and of lower surface magnitude and appear to have more knots. The east arm can be traced through ~540° while the west one fades after ~360°.[3] The spiral pattern of the galaxy is undisturbed, with regular flow pattern and no evidence for a bar or oval distortion.[4] In the nucleus of NGC 2280 lies a supermassive black hole whose mass is estimated to be between 4 and 15 million M☉ (106.88 ± 0.31 M☉) by measuring the galaxy's pitch angle.[5]

Supernova

One supernova has been observed in NGC 2280, SN 2001fz, a type II supernova[6] discovered by the Beijing Astronomical Observatory Supernova Survey on November 15, 2001.[7] It had a peak magnitude of 17.4.[8]

Nearby galaxies

NGC 2280 belongs to the NGC 2280

NGC 2207, NGC 2217, and NGC 2223.[10]

References

  1. ^ a b c d e f g h "NASA/IPAC Extragalactic Database". Results for NGC 2280. Retrieved 2016-01-18.
  2. ^ Seligman, Courtney. "NGC 2280 (= PGC 19531)". Celestial Atlas. Retrieved 19 November 2018.
  3. S2CID 15491635
    .
  4. ^
    S2CID 118639641
    .
  5. S2CID 119302157
    .
  6. ^ "Circular No. 7759". Central Bureau for Astronomical Telegrams. International Astronomical Union. 21 November 2001.
  7. ^ "Circular No. 7753". Central Bureau for Astronomical Telegrams. International Astronomical Union. 17 November 2001.
  8. IAU
    Central Bureau for Astronomical Telegrams. Retrieved 29 December 2015.
  9. doi:10.1046/j.1365-8711.2001.04273.x
    .
  10. ^ de Vaucouleurs, G. (1975). "NEARBY GROUPS OF GALAXIES". Galaxies and the Universe. University of Chicago Press.

External links

Wikimedia Commons has media related to NGC 2280.


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