NGC 3628
Galaxy NGC 3628 |
|
---|---|
NGC 3628 SDSS image, angle of view 15 '× 15' | |
AladinLite | |
Constellation | lion |
Position equinox : J2000.0 , epoch : J2000.0 |
|
Right ascension | 11 h 20 m 16.970 s |
declination | + 13 ° 35 ′ 22.86 ″ |
Appearance | |
Morphological type | SAb / HII / LINER |
Brightness (visual) | 9.6 likes |
Brightness (B-band) | 10.4 mag |
Angular expansion | 13.1 ′ × 3.1 ′ |
Position angle | 104 ° |
Surface brightness | 13.5 mag / arcmin² |
Physical data | |
Affiliation | M66 group (Leo triplet) NGC 3627 group (LGG 231) |
Redshift | 0.002812 ± 0.000003 |
Radial velocity | +843 ± 1 km / s |
Stroke distance v rad / H 0 |
(34 ± 2) x 10 6 ly (10.4 ± 0.7) Mpc |
diameter | 120,000 ly |
history | |
discovery | Wilhelm Herschel |
Discovery date | April 8, 1784 |
Catalog names | |
NGC 3628 • UGC 6350 • PGC 34697 • CGCG 067-058 • MCG + 02-29-020 • IRAS 11176 + 1351 • 2MASX J11201701 + 1335221 • Arp 317 • VV 308b • GC 2378 • H V 8 • h 859 • HIPASS J1120 + 13b • HOLM 246C |
NGC 3628 is an active spiral galaxy with extended star formation from the Hubble type Sc in Leo on the ecliptic . It has an apparent visual magnitude of 9.5 mag. The galaxy is estimated to be 34 million light years from the Milky Way and about 145,000 light years across . The object is a so-called edge-on galaxy , i. H. we see them exactly at the edge. The spiral arms appear here only as dark dusty clouds, illuminated by the bright center of the galaxy.
Together with Messier 66 and Messier 65 , this galaxy forms the Leo triplet also known as Arp 317 or Holm 246 , the core of the M66 galaxy group . Long-exposure photos show a tidal trail emanating from the galaxy. It probably arose from the interactions with the gravitational fields of the two neighboring galaxies M 65 and M 66.
Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy triplet belongs to the class of galaxy groups .
The object was discovered on April 8, 1784 by the German-British astronomer Wilhelm Herschel .
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
Web links
- NGC 3628 at SEDS
- high-resolution image from an amateur observatory
- ESO : The VST takes a look at the Leo triplet - and beyond (+ photos, map & animation) July 27, 2011
- Spektrum.de : Amateur recordings [1] [2] [3]
- ARP ATLAS OF PECULIAR GALAXIES
- Seligman Arp