NGC 3748
| Galaxy NGC 3748 |
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| 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 3748 is located at the top of the triple shown on the right. | |
| AladinLite | |
| Constellation | lion |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 11 h 37 m 49.0 s |
| declination | + 22 ° 01 ′ 34 ″ |
| Appearance | |
| Morphological type | SB0 ^ 0 ^? sp / RET |
| Brightness (visual) | 14.8 mag |
| Brightness (B-band) | 15.8 mag |
| Angular expansion | 0.7 ′ × 0.4 ′ |
| Position angle | 132 ° |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Affiliation | Copeland's septet |
| Redshift | 0.030458 ± 0.000350 |
| Radial velocity | 8992 ± 195 km / s |
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Stroke distance v rad / H 0 |
(392 ± 27) x 10 6 ly (120.1 ± 8.4) Mpc |
| history | |
| discovery | Ralph Copeland |
| Discovery date | April 5, 1874 |
| Catalog names | |
| NGC 3748 • PGC 36007 • CGCG 127-007 • MCG + 04-28-007 • 2MASX J11374903 + 2201340 • Arp part of 320 • HCG 57E • | |
NGC 3748 is a lenticular S0-type galaxy in the constellation Leo . The galaxy was discovered on April 5, 1874 by the British astronomer Ralph Copeland .
The galaxy NCG 3748 forms together with NGC 3745 , NGC 3746 , 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 .
Web links
Commons : NGC 3748 - 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