NGC 89

NGC 89
NGC 89 aka The Julie Star (bottom) surrounded by the other galaxies in Robert's Quartet
Observation data (J2000 epoch)
Constellation	Phoenix
Right ascension	00^h 21^m 24.355^s[1]
Declination	−48° 39′ 55.28″[1]
Redshift	0.011074 ± 0.000067[2]
Distance	144 ± 10 Mly (44.1 ± 3.1 Mpc)[3]
Apparent magnitude (V)	14.18[3]
Characteristics
Type	SB0/a pec[4]
Apparent size (V)	0′.957 × 0′.459[1]
Other designations
PGC 1374, ESO 194-G011

NGC 89 is a barred spiral or lenticular galaxy, part of Robert's Quartet, a group of four interacting galaxies. This member has a Seyfert 2 nucleus with extra-planar features emitting H-alpha radiation. There are filamentary features on each side of the disk, including a jet-like structure extending about 4 kpc in the NE direction. It may have lost its neutral hydrogen (H1) gas due to interactions with the other members of the clusters—most likely NGC 92.^[4]

References

1. Skrutskie, M. F.; et al. (February 2006), "The Two Micron All Sky Survey (2MASS)", The Astronomical Journal, 131 (2): 1163–1183, Bibcode:2006AJ....131.1163S, doi:10.1086/498708.
2. Boselli, A.; et al. (October 1996), "The molecular gas content of spiral galaxies in compact groups.", Astronomy and Astrophysics, 314: 738–744, Bibcode:1996A&A...314..738B.
3. "NED results for object NGC 0089". NASA/IPAC Extragalactic Database. Jet Propulsion Laboratory/California Institute of Technology. Retrieved 2015-10-06.
4. Presotto, V.; et al. (December 2009), "SCG0018-4854: A young and dynamic compact group", Astronomische Nachrichten, 330: 988–990, Bibcode:2009AN....330..988P, doi:10.1002/asna.200911275.

External links

• NGC 89
• NGC 89 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

Coordinates: 00^h 21^m 24.3^s, −48° 39′ 57″