NGC 3746

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Galaxy
NGC 3746
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Image of the galaxies NGC 3745, NGC 3746, NGC 3748, NGC 3750, NGC 3751, NGC 3753 and NGC 3754 with the 81 cm reflecting telescope of the Mount Lemmon Observatory. This group is also known as the Copelands Septet. NGC 3746 is at the bottom of the triple shown slightly to the right.
Image of the galaxies NGC 3745 , NGC 3746, NGC 3748 , NGC 3750 , NGC 3751 , NGC 3753 and NGC 3754 with the 81 cm reflecting telescope of the Mount Lemmon Observatory . This group is also known as the Copelands Septet. NGC 3746 is at the bottom of the triple shown slightly to the right.
AladinLite
Constellation lion
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 11 h 37 m 43.6 s
declination + 22 ° 00 ′ 35 ″
Appearance
Morphological type SB (r) b / RET  
Brightness  (visual) 14.0 mag
Brightness  (B-band) 14.8 mag
Angular expansion 1.1 ′ × 0.5 ′
Position angle 126 °
Surface brightness 13.2 mag / arcmin²
Physical data
Affiliation Copeland's septet  
Redshift 0.030561 ± 0.000067  
Radial velocity 9022 ± 20 km / s  
Stroke distance
v rad  / H 0 		(401 ± 28)  ·  10 6  ly
(123 ± 8.6)  Mpc 
history
discovery Ralph Copeland
Discovery date February 9, 1874
Catalog names
NGC  3746 • UGC  6597 • PGC  35997 • CGCG  127-006 • MCG  + 04-28-005 • 2MASX  J11374364 + 2200349 • Arp  part of 320 • HCG  57B • VV  282 • LDCE 0826 NED002

NGC 3746 is a bar- type spiral galaxy SBab in the constellation Leo . The galaxy was discovered on February 9, 1874 by the British astronomer Ralph Copeland .

The galaxy NCG 3746 forms together with NGC 3745 , NGC 3748 , NGC 3750 , NGC 3751 , NGC 3753 and NGC 3754 the galaxy group Arp 320 and complements the galaxy PGC 36010 the Hickson Compact Group (HCG) 57. Halton Arp structured his catalog in a more unusual way Galaxies in groups according to purely morphological criteria. This group of galaxies belongs to the class of galaxies .

Web links

Commons : NGC 3746  - collection of images, videos, and audio files

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

Individual evidence

  1. ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  2. ↑ a b c d e SEDS : NGC 3746
  3. ↑ Seligman