NGC 3786

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Galaxy
NGC 3786
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NGC 3788 (o) & NGC 3786 = Arp 294 with LEDA 1969619 (u) [1] (SDSS image)
NGC 3788 (o) & NGC 3786 = Arp 294 with LEDA 1969619 (u) ( SDSS image)
AladinLite
Constellation Big Bear
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 11 h 39 m 42.5 s
declination + 31 ° 54 ′ 33 ″
Appearance
Morphological type (R ') SAB (r) a / Sy1.8  
Brightness  (visual) 12.4 mag
Brightness  (B-band) 13.4 mag
Angular expansion 2.1 ′ × 1.1 ′
Position angle 77 °
Surface brightness 13.2 mag / arcmin²
Physical data
Affiliation LGG 243
WBL 345
NGC 3672 group  
Redshift 0.008933 ± 0.000020  
Radial velocity (2678 ± 6) km / s  
Stroke distance
v rad  / H 0 		(119 ± 8)  ·  10 6  ly
(36.6 ± 2.6)  Mpc 
history
discovery John Herschel
Discovery date April 10, 1831
Catalog names
NGC  3786 • UGC  6621 • PGC  36158 • CGCG  157-009 • MCG  + 05-28-008 • IRAS  11350 + 4809 • KUG  1137 + 321 • 2MASX  J11394247 + 3154337 • Arp  294 • VV  228b • LDCE 825 NED003 • HOLM 272B • KPG 295A

NGC 3786 is a bar-spiral galaxy with an active galaxy core of the Hubble type SBa / P in the constellation Great Bear in the northern sky . It is estimated to be 119 million light years away from the Milky Way and about 75,000 light years in diameter. Together with NGC 3788 , it forms the interacting galaxy pair Arp 294 , KPG 295 or Holm 272 . Together with three other galaxies, it forms the NGC 3788 group or LGG 243 .

Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This pair of galaxies belongs to the class of galaxies with long filaments .

In the same area of ​​the sky are u. a. the galaxies IC 2946 and IC 2947 .

The supernovae SN 1999bu (type Ic) and SN 2004bd ( type Ia ) were observed here.

The object was discovered on April 10, 1831 by the British astronomer John Herschel .

literature

  • Jeff Kanipe and Dennis Webb: The Arp Atlas of Peculiar Galaxies - A Chronicle and Observer's Guide " , Richmond 2006, ISBN 978-0-943396-76-7

Web links

Individual evidence

  1. ^ Aladin Lite
  2. ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  3. ↑ a b c d e SEDS : NGC 3786
  4. ^ VizieR
  5. ↑ Simbad
  6. ↑ Seligman