NGC 3786 | |
---|---|
Observation data (J2000 epoch) | |
Right ascension | 11h 39m 42.512s [1] |
Declination | +31° 54′ 33.97″ [1] |
Redshift | 0.008883 [2] |
Distance | 107.5 Mly (32.95 Mpc) [2] |
Apparent magnitude (V) | 13.74 [3] |
Apparent magnitude (B) | 14.62 [3] |
Characteristics | |
Type | (R')SA(rs)a [4] |
Apparent size (V) | 1.207′ × 0.627′ [5] ( NIR) |
Other designations | |
NGC 3786, Arp 294, UGC 6621, PGC 36158, Mark 744 [6] |
NGC 3786 is an intermediate spiral galaxy located 107.5 million light-years [2] away in the northern constellation of Ursa Major. It was discovered by English astronomer John Herschel on April 10, 1831. This object appears to form a close pair with its peculiar neighbor to the north, NGC 3788. [7] They show some indications of interaction, such as minor distortion of the disk or tidal features. [8]
The morphological classification of this galaxy is (R')SA(rs)a, [4] indicating a spiral galaxy (SA) with an outer ring (R'), transitional inner ring (rs), and tightly wound spiral arms (a). The galactic plane is inclined at an angle of 61°±2° to the line of sight from the Earth. [9] A mini-bar structure appears in the circumnuclear region. [4] [9] It is a type 1.8 Seyfert galaxy, with a detectable X-ray emission that is being partially absorbed by warm, dusty material along the line of sight. [10] The active galactic nucleus of this galaxy is driven by a supermassive black hole with an estimated mass of 5.0×106 M☉. [11] An outburst from the core was observed in 1996 [12] and a mid-infrared flare in 2022. [11]
Type Ic supernova [13] SN 1999bu was detected from an image taken April 16, 1999. It was magnitude 17.5 and was located at an offset 1.3 ″ west and 3.1″ south of the galactic nucleus of NGC 3786. [14] A possible progenitor to this core collapse supernova event was identified in 2003 from archival images. [15] A second supernova, SN 2004bd, was discovered April 7, 2004. [16] This was a type Ia supernova located 4.7″ west and 1.2″ south of the nucleus. [17]
NGC 3786 | |
---|---|
Observation data (J2000 epoch) | |
Right ascension | 11h 39m 42.512s [1] |
Declination | +31° 54′ 33.97″ [1] |
Redshift | 0.008883 [2] |
Distance | 107.5 Mly (32.95 Mpc) [2] |
Apparent magnitude (V) | 13.74 [3] |
Apparent magnitude (B) | 14.62 [3] |
Characteristics | |
Type | (R')SA(rs)a [4] |
Apparent size (V) | 1.207′ × 0.627′ [5] ( NIR) |
Other designations | |
NGC 3786, Arp 294, UGC 6621, PGC 36158, Mark 744 [6] |
NGC 3786 is an intermediate spiral galaxy located 107.5 million light-years [2] away in the northern constellation of Ursa Major. It was discovered by English astronomer John Herschel on April 10, 1831. This object appears to form a close pair with its peculiar neighbor to the north, NGC 3788. [7] They show some indications of interaction, such as minor distortion of the disk or tidal features. [8]
The morphological classification of this galaxy is (R')SA(rs)a, [4] indicating a spiral galaxy (SA) with an outer ring (R'), transitional inner ring (rs), and tightly wound spiral arms (a). The galactic plane is inclined at an angle of 61°±2° to the line of sight from the Earth. [9] A mini-bar structure appears in the circumnuclear region. [4] [9] It is a type 1.8 Seyfert galaxy, with a detectable X-ray emission that is being partially absorbed by warm, dusty material along the line of sight. [10] The active galactic nucleus of this galaxy is driven by a supermassive black hole with an estimated mass of 5.0×106 M☉. [11] An outburst from the core was observed in 1996 [12] and a mid-infrared flare in 2022. [11]
Type Ic supernova [13] SN 1999bu was detected from an image taken April 16, 1999. It was magnitude 17.5 and was located at an offset 1.3 ″ west and 3.1″ south of the galactic nucleus of NGC 3786. [14] A possible progenitor to this core collapse supernova event was identified in 2003 from archival images. [15] A second supernova, SN 2004bd, was discovered April 7, 2004. [16] This was a type Ia supernova located 4.7″ west and 1.2″ south of the nucleus. [17]