NGC 4375 is a barred spiral galaxy in the constellation of Coma Berenices. Its velocity with respect to the cosmic microwave background is 9325 ± 20 km/s, which corresponds to a Hubble distance of 137.54 ± 9.63 Mpc (∼448 million light-years).[1] However, four non-redshift measurements give a distance of 105.5 Mpc (~344 million light-years).[2] The galaxy was discovered by German-British astronomer William Herschel on 11 April 1785.[3]
The SIMBAD database lists NGC 4375 as a Seyfert II Galaxy, i.e. it has a quasar-like nuclei with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.[4]
Supernovae
Two supernovae have been observed in NGC 4375:
- SN 1960J (type unknown, mag. 18.5) was discovered by Milton Humason on 18 June 1960.[5][6]
- SN 2023vsr (type II, mag. 17.6) was discovered by the Zwicky Transient Facility on 24 October 2023.[7]
See also
References
- ^ a b c d e f g h i j k "NASA/IPAC Extragalactic Database". Results for NGC 4375. Retrieved 14 August 2024.
- ^ "Distance Results for NGC 4375". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 14 August 2024.
- ^ Seligman, Courtney. "NGC 4375". Celestial Atlas. Retrieved 14 August 2024.
- ^ "NGC 4375". SIMBAD astronomical database. Strasbourg Astronomy Data Centre. Retrieved 14 August 2024.
- ^ "SN 1960J". Transient Name Server. IAU. Retrieved 14 August 2024.
- ^ Humason, M. L.; Gomes, Alercio M.; Kearns, C. E. (1961). "The 1960 Palomar Supernova Search". Publications of the Astronomical Society of the Pacific. 73 (432): 175. Bibcode:1961PASP...73..175H. doi:10.1086/127650.
- ^ "SN 2023vsr". Transient Name Server. IAU. Retrieved 14 August 2024.
External links
Media related to NGC 4375 at Wikimedia Commons- NGC 4375 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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