NGC 3786

NGC 3786
legacy surveys image of NGC 3786 (center), with NGC 3788 at top
Observation data (J2000 epoch)
Right ascension11h 39m 42.512s[1]
Declination+31° 54′ 33.97″[1]
Redshift0.008883[2]
Distance107.5 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]

Sloan Digital Sky Survey image of NGC 3786 (center), with NGC 3788 at top

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]

  1. ^ a b Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference Ann_et_al_2015 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Véron-Cetty_Véron_2010 was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference Afanasiev_Shapovalova_1996 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Skrutskie_et_al_2006 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Keel_2002 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Knapen_et_al_2014 was invoked but never defined (see the help page).
  9. ^ a b Cite error: The named reference Moiseev_et_al_2004 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Komossa_Fink_1997 was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference Son_et_al_2022 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Nelson_1996 was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Jha_et_al_1999 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Li_1999 was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference Van_Dyk_et_al_2003 was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference Armstrong_Mobberley_2004 was invoked but never defined (see the help page).
  17. ^ Cite error: The named reference Hamane_et_al_2004 was invoked but never defined (see the help page).