NGC 4411B

NGC 4411B
NGC 4411B imaged by the Vera C. Rubin Observatory
Observation data (J2000 epoch)
ConstellationVirgo
Right ascension12h 26m 47.2398s
Declination+08° 53′ 04.619″
Redshift0.004243±0.000003
Heliocentric radial velocity1,272±1 km/s
Distance73.06 ± 18.26 Mly (22.400 ± 5.600 Mpc)
Group or clusterVirgo Cluster
Apparent magnitude (V)12.98
Characteristics
TypeSAB(s)cd
Size~68,000 ly (20.85 kpc) (estimated)
Apparent size (V)2.5′ × 2.5′
Other designations
KPG 336B, IRAS 12242+0909, UGC 7546, MCG +02-32-055, PGC 040745, CGCG 070-082

NGC 4411B (also known as UGC 7546) is a barred spiral galaxy in the constellation of Virgo. Its velocity with respect to the cosmic microwave background is 1,610±24 km/s, which corresponds to a Hubble distance of 77.4 ± 5.5 Mly (23.74 ± 1.70 Mpc). Two non-redshift measurements give a similar distance of 73.06 ± 18.26 Mly (22.400 ± 5.600 Mpc). It was discovered by French astronomer Guillaume Bigourdan on 25 April 1895. There was a longstanding confusion of identification between this galaxy and the neighboring spiral galaxy NGC 4411. Therefore, this galaxy, despite its common name, was not a part of the original New General Catalogue.

NGC 4411B and NGC 4411 form a pair of galaxies, referred to as KPG 336. Both galaxies are members of the Virgo Cluster.

NGC 4411B is a Seyfert II 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.

Supernovae

Two supernovae have been observed in NGC 4411B.

See also

References

  1. 1 2 3 4 5 6 7 8 9 10 11 "Results for object NGC 4411b". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 19 July 2025.
  2. ↑ "Distance Results for NGC 4411b". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 19 July 2025.
  3. 1 2 Seligman, Courtney. "New General Catalogue Objects: NGC 4411". Celestial Atlas. Retrieved 19 July 2025.
  4. ↑ Karachentsev, I. D. (1972). "Catalogue of isolated pairs of galaxies in the northern hemisphere". Soobshcheniya Spetsial'noj Astrofizicheskoj Observatorii. 7: 1. Bibcode:1972SoSAO...7....1K.
  5. ↑ "UGC 7546". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 19 July 2025.
  6. ↑ McNaught, R. H.; Evans, R.; Spyromilio, J.; Taylor, K.; Hawkins, M.; Vernon, P. (1992). "Supernova 1992ad in NGC 4411B". International Astronomical Union Circular (5552): 1. Bibcode:1992IAUC.5552....1M.
  7. ↑ "SN 1992ad". Transient Name Server. IAU. Retrieved 19 July 2025.
  8. ↑ "SN 2021smj". Transient Name Server. IAU. Retrieved 19 July 2025.