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NGC 3568

Coordinates: Sky map 11h 10m 48.4926s, −37° 26′ 51.601″
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NGC 3568
NGC 3568 imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
ConstellationCentaurus
Right ascension11h 10m 48.4926s[1]
Declination−37° 26′ 51.601″[1]
Redshift0.008152±0.00000700[1]
Heliocentric radial velocity2,444±2 km/s[1]
Distance81.96 ± 3.65 Mly (25.128 ± 1.119 Mpc)[2]
Group or clusterNGC 3557 group (LGG 229)
Apparent magnitude (V)13.00[1]
Characteristics
TypeSB(s)c[1]
Size~91,000 ly (27.91 kpc) (estimated)[1]
Apparent size (V)2.5′ × 0.8′[1]
Other designations
ESO 377- G 020, IRAS 11084-3710, 2MASX J11104858-3726523, MCG -06-25-009, PGC 33952[1]

NGC 3568 is a barred spiral galaxy in the constellation of Centaurus. Its velocity with respect to the cosmic microwave background is 2,764±22 km/s, which corresponds to a Hubble distance of 132.9 ± 9.4 Mly (40.76 ± 2.87 Mpc).[1] However, 25 non-redshift measurements give a much closer mean distance of 81.96 ± 3.65 Mly (25.128 ± 1.119 Mpc).[2] It was discovered by British astronomer John Herschel on 21 April 1835.[3]

NGC 3568 is a Seyfert I galaxy, i.e. it has a quasar-like nucleus with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.[4][5]

NGC 3557 group

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NGC 3568 is a member of the NGC 3557 group (also known as LGG 229) which has at least 11 galaxies, including NGC 3533 [fr], NGC 3557, NGC 3557B [d], NGC 3564 [fr], and NGC 3573 [fr], among others.[6][7]

Supernova

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One supernova has been observed in NGC 3568:

  • SN 2014dw (Type II, mag. 15.5) was discovered by Stu Parker on 6 November 2014.[8][9]

See also

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References

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  1. ^ a b c d e f g h i j "Results for object NGC 3568". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 14 March 2026.
  2. ^ a b "Distance Results for NGC 3568". NASA/IPAC Extragalactic Database. NASA. Retrieved 14 March 2026.
  3. ^ Seligman, Courtney. "New General Catalogue Objects: NGC 3568". Celestial Atlas. Retrieved 14 March 2026.
  4. ^ Chen, Yan-Ping; Zaw, Ingyin; Farrar, Glennys R.; Elgamal, Sana (2022). "A Uniformly Selected, Southern-sky 6dF, Optical AGN Catalog". The Astrophysical Journal Supplement Series. 258 (2): 29. arXiv:2111.13217. Bibcode:2022ApJS..258...29C. doi:10.3847/1538-4365/ac4157.
  5. ^ "NGC 3568". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 14 March 2026.
  6. ^ Garcia, A. M. (1993). "General study of group membership. II. Determination of nearby groups". Astronomy and Astrophysics Supplement Series. 100: 47. Bibcode:1993A&AS..100...47G.
  7. ^ "LGG 229". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 14 March 2026.
  8. ^ Parker, S.; Arcavi, I.; Hosseinzadeh, G.; Valenti, S.; Howell, D. A.; McCully, C.; Diamond, T.; Phillips, M. M.; Contreras, C.; Hsiao, E. Y. (2015). "Supernova 2014dw in NGC 3568 = PSN J11104841-3727022". Central Bureau Electronic Telegrams (4047): 1. Bibcode:2015CBET.4047....1P.
  9. ^ "SN 2014dw". Transient Name Server. IAU. Retrieved 14 March 2026.
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  • Wikimedia Commons logo Media related to NGC 3568 at Wikimedia Commons
  • NGC 3568 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images


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