NGC 3656

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Galaxy
NGC 3656
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Combination of images from the Hubble Space Telescope (brightness) and SDSS (color)
Combination of images from the Hubble Space Telescope (brightness) and SDSS (color)
AladinLite
Constellation Big Bear
Position
equinoxJ2000.0 , epoch : J2000.0
Right ascension 11 h 23 m 38.6 s
declination + 53 ° 50 ′ 32 ″
Appearance
Morphological type (R ') I0: / pec / LINER  
Brightness  (visual) 12.3 mag
Brightness  (B-band) 13.3 mag
Angular expansion 1.6 ′ × 1.6 ′
Surface brightness 13.4 mag / arcmin²
Physical data
Redshift 0.009640 ± 0.000037  
Radial velocity (2890 ± 11) km / s  
Stroke distance
v rad  / H 0
(132 ± 9)  x  10 6  ly
(40.5 ± 2.8)  Mpc 
history
discovery Wilhelm Herschel
Discovery date April 14, 1789
Catalog names
NGC  3656 • UGC  6403 • PGC  34989 • CGCG  268-029 • MCG  + 09-19-063 • IRAS  11208 + 5406 • 2MASX  J11233859 + 5350313 • Arp  155 • VV  22 • GC  2397 • H  III 782 • h  874 •

NGC 3656 = Arp 155 is a galaxy of Hubble type E? in the constellation Great Bear in the north star sky . It is estimated to be 132 million light years from the Milky Way and about 60,000 light years in diameter.

Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class of galaxies with internal absorption .

The supernovae SN 1963K ( Type Ia ) and SN 1973C were observed here.

The object was discovered by Wilhelm Herschel on April 14, 1789 .

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

Commons : NGC 3656  - collection of images, videos, and audio files

Individual evidence

  1. a b c d NASA / IPAC EXTRAGALACTIC DATABASE
  2. a b c d e SEDS : NGC 3656
  3. Simbad
  4. Seligman