NGC 5090 and NGC 5091 are a set of galaxies approximately 160 million light-years (50 million parsecs) away in the constellation Centaurus.[1] They are in the process of colliding and merging with some evidence of tidal disruption of NGC 5091.[2]
NGC 5090 is an elliptical galaxy while NGC 5091 is a barred spiral galaxy.[1] The radial velocity of the nucleus of NGC 5090 has been measured at 3,185 km/s (1,979 mi/s), while NGC 5091 has a radial velocity of 3,429 km/s (2,131 mi/s).[2] NGC 5090 is associated with the strong, double radio source PKS 1318-43.[2]
Two supernovae have been observed in NGC 5090:
- SN 1981C (type unknown, mag. 14.5) was discovered by José Maza on 2 March 1981.[3][4]
- SN 2025cy (type Ia, mag. 18.03) was discovered by BlackGEM on 1 January 2025.[5]
See also
References
- ^ a b c "Results for object NGC 5090". NASA/IPAC Extragalactic Database. Retrieved 9 March 2019.
"Results for object NGC 5091". NASA/IPAC Extragalactic Database. Retrieved 9 March 2019. - ^ a b c "Galaxy pair NGC 5090 and NGC 5091". European Southern Observatory. 30 April 1999. Retrieved 9 March 2019.
- ^ Maza, J. (1981). "Supernova in NGC 5090". International Astronomical Union Circular (3581): 1. Bibcode:1981IAUC.3581....1M.
- ^ "SN 1981C". Transient Name Server. IAU. Retrieved 4 December 2024.
- ^ "SN 2025cy". Transient Name Server. IAU. Retrieved 6 January 2025.
External links
- "Of Holes in the Sky and Pretty Galaxies" by the European Southern Observatory
- NASA Astronomy Picture of the Day: Seeing Through Galaxies (5 December 1997)
- NGC 5090 and NGC 5091 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
