NGC 3675
Galaxy in the constellation Ursa Major
From Wikipedia, the free encyclopedia
NGC 3675 is a spiral galaxy located in the constellation Ursa Major. It is located at a distance of about 50 million light years from Earth, which, given its apparent dimensions, means that NGC 3675 is about 100,000 light years across. It was discovered by German-British astronomer William Herschel on 14 January 1788.[2] NGC 3675 belongs to the Ursa Major Cluster, part of the Virgo Supercluster.[3]
| NGC 3675 | |
|---|---|
NGC 3675 in Schulman telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Major |
| Right ascension | 11h 26m 08.5689s[1] |
| Declination | +43° 35′ 09.696″[1] |
| Redshift | 0.002568[1] |
| Heliocentric radial velocity | 770 ± 1 km/s[1] |
| Distance | 53 ± 10 Mly (16.2 ± 3.0 Mpc)[1] |
| Apparent magnitude (V) | 10.0 |
| Characteristics | |
| Type | SA(s)b [1] |
| Size | ~105,700 ly (32.41 kpc) (estimated)[1] |
| Apparent size (V) | 5.9′ × 3.1′[1] |
| Other designations | |
| IRAS 11234+4351, UGC 6439, MCG +07-24-004, PGC 35164, CGCG 214-005[1] | |
It hosts a low-ionization nuclear emission-line region (LINER).[4] In the nucleus there is a supermassive black hole with an estimated mass of 10-39 million M☉, based on the intrinsic velocity dispersion as measured by the Hubble Space Telescope.[5] Although the galaxy was reported to have a strong bar visible in infrared images, there has been no indication of a bar in further observations.[6] Its spiral disk is of type III and there is a dust structure which is more prominent to the east.[7] The galaxy features two ring structures, with diameter 1.62 and 2.42 arcminutes.[8] The spiral arms are tightly wound and form an inner pseudoring and they continue for one revolution outside the ring. The outer arms are very patchy and filamentary.[9]
One supernova has been observed in NGC 3675: SN 1984R (type unknown, mag. 13) was discovered by Kaoru Ikeya on 2 December 1984.[10][11]
Gallery
NGC 3675 (SDSS DR14)
NGC 3675 (HST)
