NGC7549 is a peculiar barred spiral galaxy in the constellation of Pegasus. Its velocity with respect to the cosmic microwave background is 4,373±26 km/s, which corresponds to a Hubble distance of 210.4 ± 14.8 Mly (64.50 ± 4.53 Mpc). However, five non-redshift measurements give a closer mean distance of 187.41 ± 14.74 Mly (57.460 ± 4.518 Mpc). It was discovered by Irish engineer Bindon Stoney on 2 November 1850.

NGC 7549 has an active galactic nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.

Hickson Compact Group 93

  • HCG 93 imaged by Legacy Surveys
  • HCG 93 imaged by SDSS

NGC 7549 is a member of the Hickson Compact Group HCG 93. This five member group of galaxies also contains NGC 7547, NGC 7550, NGC 7553[fr], and NGC 7558[fr].

Arp 99

NGC 7549 along with NGC 7547 and NGC 7550 are listed together as Arp99 in Halton Arp's Atlas of Peculiar Galaxies as Arp99, as an example of spirals with companions attached to spiral arms.

Supernovae

Two supernovae have been observed in NGC 7549:

See also

External links

  • Media related to NGC 7549 at Wikimedia Commons
  • NGC 7549 on WikiSky: , , , , , , , ,