IC 4173
| Galaxy IC 4173 |
|
|---|---|
|
|
| Taken using the Hubble Space Telescope | |
| AladinLite | |
| Constellation | Virgin |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 13 h 03 m 54.7 s |
| declination | -11 ° 30 ′ 18 ″ |
| Appearance | |
| Morphological type | E pec |
| Brightness (visual) | 14.2 mag |
| Brightness (B-band) | 15.2 mag |
| Angular expansion | 0.6 ′ × 0.5 ′ |
| Position angle | 69 ° |
| Surface brightness | 13.0 mag / arcmin² |
| Physical data | |
| Redshift | 0.010364 +/- 0.000103 |
| Radial velocity | 3107 +/- 31 km / s |
|
Stroke distance v rad / H 0 |
(134 ± 9) x 10 6 ly (41.1 ± 2.9) Mpc |
| history | |
| discovery | Guillaume Bigourdan |
| Discovery date | April 16, 1895 |
| Catalog names | |
| IC 4173 • PGC 45142 • MCG -02-33-101 • Arp 176 • HOLM 502B | |
IC 4173 is an elliptical galaxy of Hubble type E in the constellation of Virgo , which is about 138 million light-years from the Milky Way center.
IC 4173 forms together with the NGC object NGC 4933 a double galaxy connected by gravity (Arp 176) with visible effects on both galaxies; Both objects are also (replaceable) NGC 4933 A and NGC 4933 B called. A gravitational connection with a third galaxy, PGC 45143 (sometimes also called NGC 4933 C ), has not yet been conclusively proven. Halton Arp organized his catalog of unusual galaxies into groups according to purely morphological criteria. This galaxy belongs to the class galaxies with narrow opposing arms .
The galaxy was discovered by Guillaume Bigourdan on April 16, 1895 .
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