NGC 4567/8

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Galaxy
NGC 4567/8 / KPG 347 / VV 219
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NGC 4567 top right, NGC 4568 bottom left, combination of an image from the Hubble Space Telescope with images from the WIYN 3.5 observatory
NGC 4567 top right, NGC 4568 bottom left, combination of an image from the Hubble space telescope with images from the WIYN 3.5m observatory
AladinLite
Constellation Virgin
Position
equinoxJ2000.0 , epoch : J2000.0
Right ascension 12 h 36 m 33.5 s
declination + 11 ° 15.0 ′
Appearance
Morphological type SA (rs) bc HII pec (NGC 4567)
SA (rs) bc HII (NGC 4568)  
Brightness  (visual) 11.3 (NGC 4567)
10.9 (NGC 4568) mag
Brightness  (B-band) 12.1 (NGC 4567)
11.7 (NGC 4568) mag
Angular expansion 3 ′, 1 × 2 ′, 2 (NGC 4567)
4 ′, 6 × 2 ′, 2 (NGC 4568)
Position angle 85 ° (NGC 4567)
23 ° (NGC 4568)
Surface brightness 13.2 (NGC 4567)
13.3 (NGC 4568) mag / arcmin²
Physical data
Affiliation Virgo Galaxy
Cluster LGG 285  
Redshift 0.007495 ± 0.000005  
Radial velocity (2247 ± 1) km / s  
Stroke distance
v rad  / H 0
(98 ± 7)  x  10 6  ly
(30.0 ± 2.1)  Mpc 
history
discovery Wilhelm Herschel
Discovery date March 15, 1784
Catalog names
NGC  4567 • NGC 4568 • UGC  7777/7776 • PGC  42064/42069 • CGCG  070-189 / 188 • MCG  + 02-32-151 / 152 • 2MASX  J12363270 + 1115283 / J12363429 + 1114190 • VCC  1673 • VCC 1676 • VV  219 • GC  3108/3109 • H  IV 8 • H IV 9 • h  1358/1363/1359/1363 • Holm 427 • KGP 347

NGC 4567/8 or KPG 347 or VV 219 are two spiral galaxies in the Virgo cluster in the constellation Virgo . The galaxies are also called "The Siamese Twins" or "The Butterfly Galaxies". The couple is believed to be in the early stages of the interaction.

Observation history

The object was discovered on March 15, 1784 by William Herschel . On June 10, 2004, during the Lick Observatory Supernova Survey in NGC 4568, SN 2004cc, a type Ic supernova was discovered. On January 20, 1990, Perlmutter and Pennypacker discovered it in NGC 4568 SN 1990B (Type Ib).

literature

  • Xu et al .: "Mapping Infrared Enhancements in Closely Interacting Spiral-Spiral Pairs. I. ISO CAM and ISO SWS Observations"; The Astrophysical Journal 541 (2), pp. 644-659
  • Smith et al .: "The Herschel Virgo Cluster Survey. IV. Resolved dust analysis of spiral galaxies"; Astronomy and Astrophysics 518
  • Kaneko et al .: "Molecular Gas in the Early Stage of Interacting Galaxies: The NGC 4567/8 Pair"; ASP Conference Series Vol. 423
  • Iono et al .: "Atomic and Molecular Gas in Colliding Galaxy Systems. I. The Data"; The Astrophysical Journal Supplement Series 158 (1), pp. 1-37

Web links

Individual evidence

  1. a b c NASA / IPAC EXTRAGALACTIC DATABASE NGC 4567
  2. NASA / IPAC EXTRAGALACTIC DATABASE NGC 4568
  3. a b c d e f SEDS : NGC 4567
  4. a b c d e f SEDS : NGC 4568
  5. Kopernik Observatory & Science Education Center: "Spiral Galaxies NGC 4568 and NGC 4567"
  6. CfA