NGC 4522
| Galaxy NGC 4522 |
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|---|---|
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| Photo from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | Virgin |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 12 h 33 m 39.7 s |
| declination | + 09 ° 10 ′ 30 ″ |
| Appearance | |
| Morphological type | SB (s) cd: / HII |
| Brightness (visual) | 12.1 mag |
| Brightness (B-band) | 12.8 mag |
| Angular expansion | 3,6 ′ × 1 ′ |
| Position angle | 33 ° |
| Surface brightness | 13.3 mag / arcmin² |
| Physical data | |
| Affiliation | Virgo Cluster NGC 4168 -Group LGG 285 |
| Redshift | 0.007769 ± 0.000003 |
| Radial velocity | 2339 ± 1 km / s |
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Stroke distance v rad / H 0 |
(101 ± 7) x 10 6 ly (31.1 ± 2.2) Mpc |
| history | |
| discovery | John Herschel |
| Discovery date | January 18, 1828 |
| Catalog names | |
| NGC 4522 • UGC 7711 • PGC 41729 • CGCG 070-168 • MCG + 02-32-137 • IRAS 12311 + 0926 • VCC 1516 • GC 3072 • h 1325 • LDCE 0904 NED177 | |
NGC 4522 is a bar-spiral galaxy with extensive star formation regions of the Hubble type SBc in the constellation Virgo on the ecliptic . It is estimated to be 101 million light-years from the Milky Way and about 110,000 light-years across.
The galaxy moves at a speed of around 10 million kilometers per hour through the gas between the galaxies, creating a violent wind that also carries away the gas from NGC 4522. This makes their interstellar matter seem to blow into intergalactic space . The astronomers refer to this effect as "ram pressure stripping".
It is listed under catalog number VVC 1516 as part of the Virgo galaxy cluster. In the same area of the sky are u. a. the galaxies NGC 4519 , IC 3487 , IC 3517 , IC 3518 .
The object was discovered on January 18, 1828 by the British astronomer John Herschel .
Web links
- SIMBAD Astronomical Database
- GALEX ( page no longer available , search in web archives )
- The Virgo Cluster Galaxy NGC 4522: Gas Stripping in Action
- astronews.com: Picture of the day June 29, 2012