NGC 7714
| Galaxy NGC 7714 |
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|---|---|
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| Photo from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | fishes |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 23 h 36 m 14.1 s |
| declination | + 02 ° 09 ′ 19 ″ |
| Appearance | |
| Morphological type | SB (s) b: / pec / HII / LINER |
| Brightness (visual) | 12.2 mag |
| Brightness (B-band) | 13.0 likes |
| Angular expansion | 1.9 ′ × 1.4 ′ |
| Position angle | 79 ° |
| Surface brightness | 13.1 mag / arcmin² |
| Physical data | |
| Affiliation | LGG 479 |
| Redshift | 0.009333 ± 0.000003 |
| Radial velocity | (2798 ± 1) km / s |
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Stroke distance v rad / H 0 |
(130 ± 9) x 10 6 ly (40.0 ± 2.8) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | September 18, 1830 |
| Catalog names | |
| NGC 7714 • UGC 12699 • PGC 71868 • CGCG 381-011 • MCG + 00-60-017 • IRAS 23336 + 0152 • 2MASX J23361409 + 0209180 • Arp part of 284 • Mrk 538 • VV 51a • GC 4993 • h 2257 • KCPG 587A • Holm 810A • UM 167 | |
NGC 7714 is an active barred spiral galaxy with extensive star formation from Hubble type SBCD in the constellation Pisces on the ecliptic . It is around 130 million light years away from the Milky Way and has a diameter of around 70,000 light years and 90,000 light years on the extended spiral arms .
The galaxy, together with NGC 7715, forms an interacting galaxy pair known as Arp 284 . As a result of the interaction, NGC 7714 has a strongly distorted spiral that forms a kind of bridge between the two galaxies. This ensures that gas flows from the smaller galaxy into the galaxy NGC 7714, which leads to a high rate of star formation . Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy pair belongs to the class double galaxies with inflow and attraction .
The Type Ib supernovae 1999dn (September 19, 1999) and SN 2007fo were observed here.
The object was discovered on September 18, 1830 by John Herschel .
Web links
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