NGC 958

NGC 958
The barred spiral galaxy NGC 958
Observation data (J2000 epoch)
ConstellationCetus
Right ascension02h 30m 42.8350s[1]
Declination−02° 56′ 20.126″[1]
Redshift0.019150 [1]
Heliocentric radial velocity5741 ± 2 km/s[1]
Distance264.8 ± 18.6 Mly (81.20 ± 5.69 Mpc)[1]
Apparent magnitude (V)12.2[1]
Characteristics
TypeSB(rs)c?[1]
Size~161,200 ly (49.43 kpc) (estimated)[1]
Apparent size (V)2.9′ × 0.9′[1]
Other designations
IRAS 02281-0309, 2MASX J02304283-0256204, MCG -01-07-019, PGC 9560[1]

NGC 958 is a barred spiral galaxy in the constellation of Cetus. Its velocity with respect to the cosmic microwave background is 5505 ± 17 km/s, which corresponds to a Hubble distance of 81.20 ± 5.69 Mpc (∼265 million light-years).[1] However, 19 non-redshift measurements give a distance of 58.93 ± 12.91 Mpc (∼192 million light-years).[2] The galaxy was discovered by German-British astronomer William Herschel on 20 September 1784.[3]

The SIMBAD database lists NGC 958 as a Seyfert II Galaxy, i.e. it has a quasar-like nuclei with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.[4] The NASA/IPAC Extragalactic Database (NED) lists NGC 958 as a luminous infrared galaxy (LIRG).[1]

Supernovae

Three supernovae have been observed in NGC 958:

See also

References

  1. ^ a b c d e f g h i j k l "Results for NGC 958". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 10 August 2024.
  2. ^ "Distance Results for NGC 958". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 10 August 2024.
  3. ^ Seligman, Courtney. "NGC 958". Celestial Atlas. Retrieved 10 August 2024.
  4. ^ "NGC 958". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 16 December 2024.
  5. ^ Graham, J.; Li, W. (2005). "Supernova 2005A in NGC 958". International Astronomical Union Circular (8459): 3. Bibcode:2005IAUC.8459....3G.
  6. ^ "SN 2005A". Transient Name Server. IAU. Retrieved 16 December 2024.
  7. ^ "SN 2022ao". Transient Name Server. IAU. Retrieved 16 December 2024.
  8. ^ "SN 2022acbu". Transient Name Server. IAU. Retrieved 16 December 2024.

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