NGC 4017

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Galaxy
NGC 4017
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NGC 4017 [1] SDSS image
NGC 4017 SDSS image
AladinLite
Constellation Berenike's hair
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 11 h 58 m 45.671 s
declination + 27 ° 27 ′ 08.79 ″
Appearance
Morphological type SABbc  
Brightness  (visual) 12.6 mag
Brightness  (B-band) 13.4 mag
Angular expansion 1.80 ′ × 1.4 ′
Position angle 72 °
Surface brightness 13.5 mag / arcmin²
Physical data
Affiliation NGC 4017 group
LGG 262  
Redshift 0.011521 ± 0.000017  
Radial velocity 3454 ± 5 ​​km / s  
Stroke distance
v rad  / H 0 		(154 ± 11)  ·  10 6  ly
(47.1 ± 3.3)  Mpc 
history
discovery Wilhelm Herschel
Discovery date April 11, 1785
Catalog names
NGC  4017 • UGC  6967 • PGC  37705 • CGCG  157-069 • MCG  + 05-28-065 • KUG  1156 + 277 • 2MASX  J11584562 + 2727084 • Arp  305 NED02 • VV  424 • GC  2655 • H  II 369 • h  1043 • NSA 102480 • NVSS J115845 + 272709 • WISEA J115845.65 + 272708.5

NGC 4017 is a spiral radio galaxy of the Hubble type SBbc in the constellation Coma Berenices in the northern sky . It is an estimated 154 million light years from the Milky Way and about 80,000 light years in diameter. Together with NGC 4016 it forms the galaxy pair Arp 305 and it is the brightest member of the NGC 4017 group ( LGG 262 ).

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

In the same area of ​​the sky are u. a. the galaxies NGC 3988 , NGC 4004 , NGC 4016 , IC 2982 .

The type II supernovae SN 2006st and SN 2007an were observed here.

The object was discovered by Wilhelm Herschel on April 11, 1785 .

NGC 4017 group ( LGG 262 )

Galaxy Alternative name Distance / million ly
NGC 4004 PGC 37654 150
NGC 4008 PGC 37666 161
NGC 4016 PGC 37687 153
NGC 4017 PGC 37705 154

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 4017
  4. ^ VizieR
  5. ↑ Simbad
  6. ↑ Seligman