NGC 5394/95
| Galaxy Arp 84 |
|
|---|---|
|
|
| Image taken with a 24-inch reflector: NGC 5394 on the right, NGC 5395 in the middle | |
| AladinLite | |
| Constellation | Hunting dogs |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 13 h 58 m 35.8 s |
| declination | + 37 ° 26 ′ 20 ″ |
| Appearance | |
| Morphological type | SB (s) b pec; HII LIRG (NGC 5394) SA (s) b pec / Sy2 (NGC 5395) |
| Brightness (visual) | 12.9 (NGC 5394) 11.7 (NGC 5395) mag |
| Brightness (B-band) | 13.7 (NGC 5394) 12.5 (NGC 5395) mag |
| Angular expansion | 1.9 × 1.3 (NGC 5394) 2.7 × 1.3 (NGC 5395) |
| Position angle | 0 ° (NGC 5394) 2 ° (NGC 5395) |
| Surface brightness | 13.7 (NGC 5394) 12.9 (NGC 5395) mag / arcmin² |
| Physical data | |
| Affiliation | LGG 366 |
| Redshift | 0.011501 ± 0.000007 0.011711 ± 0.000010 |
| Radial velocity | (3448 ± 2) (3511 ± 3) km / s |
|
Stroke distance v rad / H 0 |
(157 ± 11) · 10 6 ly (48.2 ± 3.4) Mpc |
| history | |
| discovery | William Herschel |
| Discovery date | May 16, 1787 |
| Catalog names | |
| NGC 5394/5395 • UGC 8898/8900 • PGC 49739/49747 • CGCG 191-024 / 026 • MCG + 06-31-33 / 34 • Arp 84 • VV 48 • KPG 404 • Holm 563 • KUG 1356 + 376 • HI 190/1 • h 1722/3 • GC 3730/1 | |
NGC 5394/95 = Arp 84 is an interacting galaxy pair in the constellation Canes Venatici . The galaxy pair is about 160 million light years away from the Milky Way.
Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class spiral galaxies with a large companion of high surface brightness on one arm (Arp catalog) .
The two galaxies were discovered by William Herschel on May 16, 1787 and were later named NGC 5394 and NGC 5395 in the New General Catalog .
NGC 5395 group ( LGG 366 )
| Galaxy | Alternative name | Distance / million Lj |
|---|---|---|
| NGC 5395 | PGC 49739 | 157 |
| NGC 5394 | PGC 49747 | 160 |
| NGC 5341 | PGC 49285 | 166 |
| NGC 5351 | PGC 49359 | 165 |
| PGC 49337 | UGC 8806 | 160 |
literature
- Puerari, Ivânio; Valdez-Gutiérrez, Margarita; Hernández-López, Izbeth: “The interacting galaxy pair NGC 5394/95: near-infrared photometry, structure, and morphology”; in: The Astronomical Journal 130 (4), pp. 1524–1534 (2005)
- 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 5394 - collection of images, videos, and audio files
Commons : NGC 5395 - collection of images, videos, and audio files
- NOAO
- NGC 5394 and NGC 5395 (aka Arp 84) An Interacting pair of Galaxies - Supernova 2000cr
- ARP ATLAS OF PECULIAR GALAXIES
- Seligman Arp