NGC 7124

NGC 7124
NGC 7124 imaged by Legacy Surveys
Observation data (J2000 epoch)
ConstellationIndus
Right ascension21h 48m 05.3679s
Declination−50° 33′ 53.979″
Redshift0.017251
Heliocentric radial velocity5172 ± 8 km/s
Distance240.0 ± 16.8 Mly (73.57 ± 5.16 Mpc)
Apparent magnitude (V)12.3
Characteristics
TypeSB(rs)bc
Size~206,200 ly (63.21 kpc) (estimated)
Apparent size (V)2.8′ × 1.1′
Other designations
IRAS 21447-5047, 2MASX J21480540-5033549, PGC 67375, ESO 237- G 002

NGC 7124 is a large spiral galaxy in the constellation of Indus. Its velocity with respect to the cosmic microwave background is 4988 ± 15 km/s, which corresponds to a Hubble distance of 240.0 ± 16.8 Mly (73.57 ± 5.16 Mpc). However, nine non-redshift measurements give a much closer distance of 191.56 ± 4.26 Mly (58.733 ± 1.306 Mpc). It was discovered by British astronomer John Herschel on 8 July 1834.

NGC 7124 is classified as a LINER galaxy, i.e. it has a type of nucleus that is defined by its spectral line emission which has weakly ionized or neutral atoms, while the spectral line emission from strongly ionized atoms is relatively weak.

One supernova has been observed in NGC 7124: SN 2023pwl (Type Ia, mag. 16.728) was discovered by ATLAS on 19 August 2023.

See also

References

  1. 1 2 3 4 5 6 7 8 9 10 11 12 "Results for object NGC 7124". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 6 August 2024.
  2. ↑ "Distance Results for NGC 7124". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 15 December 2024.
  3. ↑ Seligman, Courtney. "New General Catalogue Objects: NGC 7124". Celestial Atlas. Retrieved 15 December 2024.
  4. ↑ "SN 2023pwl". Transient Name Server. IAU. Retrieved 15 December 2024.