NGC 3745
| Galaxy NGC 3745 |
|
|---|---|
|
|
| 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 3745 is located in the middle of the triple shown slightly to the right. | |
| AladinLite | |
| Constellation | lion |
|
Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 11 h 37 m 44.4 s |
| declination | + 22 ° 01 ′ 17 ″ |
| Appearance | |
| Morphological type | SB (s) 0-: |
| Brightness (visual) | 15.2 mag |
| Brightness (B-band) | 16.2 mag |
| Angular expansion | 0.4 ′ × 0.2 ′ |
| Position angle | 102 ° |
| Surface brightness | 12.5 mag / arcmin² |
| Physical data | |
| Affiliation | Copeland's septet |
| Redshift | 0.031565 +/- 0.000077 |
| Radial velocity | 9463 +/- 23 km / s |
|
Stroke distance v rad / H 0 |
(421 ± 29) · 10 6 Lj (129.0 ± 9.0) Mpc |
| history | |
| discovery | Ralph Copeland |
| Discovery date | April 5, 1874 |
| Catalog names | |
| NGC 3745 • PGC 36001 • MCG + 04-28-004 • 2MASX J11374443 + 2201170 • Arp part of 320 • HCG 57G • VV 282 • | |
NGC 3745 is a lenticular galaxy of the Hubble type SB (s) 0-: in the constellation Leo on the ecliptic , which is an estimated 421 million light years from the Milky Way .
The galaxy NCG 3745 forms together with NGC 3746 , 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 .
The galaxy was discovered on April 5, 1874 by the British astronomer Ralph Copeland .
Web links
Commons : NGC 3745 - collection of images, videos, and audio files
- GoBlack
- Mt. Lemmon Sky Center
- SIMBAD Astronomical Database
- ARP ATLAS OF PECULIAR GALAXIES
- Seligman Arp
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