NGC 3628

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Galaxy
NGC 3628
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NGC 3628 [1] SDSS image, angle of view 15 '× 15'
NGC 3628 SDSS image, angle of view 15 '× 15'
AladinLite
Constellation lion
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 11 h 20 m 16.970 s
declination + 13 ° 35 ′ 22.86 ″
Appearance
Morphological type SAb / HII / LINER  
Brightness  (visual) 9.6 likes
Brightness  (B-band) 10.4 mag
Angular expansion 13.1 ′ × 3.1 ′
Position angle 104 °
Surface brightness 13.5 mag / arcmin²
Physical data
Affiliation M66 group (Leo triplet)
NGC 3627 group (LGG 231)  
Redshift 0.002812 ± 0.000003  
Radial velocity +843 ± 1 km / s  
Stroke distance
v rad  / H 0 		(34 ± 2)  x  10 6  ly
(10.4 ± 0.7)  Mpc 
diameter 120,000 ly
history
discovery Wilhelm Herschel
Discovery date April 8, 1784
Catalog names
NGC  3628 • UGC  6350 • PGC  34697 • CGCG  067-058 • MCG  + 02-29-020 • IRAS  11176 + 1351 • 2MASX  J11201701 + 1335221 • Arp  317 • VV  308b • GC  2378 • H  V 8 • h  859 • HIPASS J1120 + 13b • HOLM 246C

NGC 3628 is an active spiral galaxy with extended star formation from the Hubble type Sc in Leo on the ecliptic . It has an apparent visual magnitude of 9.5 mag. The galaxy is estimated to be 34 million light years from the Milky Way and about 145,000 light years across . The object is a so-called edge-on galaxy , i. H. we see them exactly at the edge. The spiral arms appear here only as dark dusty clouds, illuminated by the bright center of the galaxy.
Together with Messier 66 and Messier 65 , this galaxy forms the Leo triplet also known as Arp 317 or Holm 246 , the core of the M66 galaxy group . Long-exposure photos show a tidal trail emanating from the galaxy. It probably arose from the interactions with the gravitational fields of the two neighboring galaxies M 65 and M 66.

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

The object was discovered on April 8, 1784 by the German-British astronomer Wilhelm Herschel .

The Leo triplet

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 3628
  4. ↑ Seligman