NGC 4402
| Galaxy NGC 4402 |
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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 26 m 07.6 s |
| declination | + 13 ° 06 ′ 48 ″ |
| Appearance | |
| Morphological type | Sb / HII |
| Brightness (visual) | 11.8 mag |
| Brightness (B-band) | 12.6 mag |
| Angular expansion | 3.9 ′ × 1.1 ′ |
| Position angle | 90 ° |
| Surface brightness | 13.2 mag / arcmin² |
| Physical data | |
| Affiliation | Virgo Galaxy Clusters |
| Redshift | 0.000774 ± 0.000017 |
| Radial velocity | (232 ± 5) km / s |
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Stroke distance v rad / H 0 |
(8 ± 1) x 10 6 ly (2.45 ± 0.19) Mpc |
| diameter | 55,000 ly |
| history | |
| discovery | Arthur Auwers |
| Discovery date | March 5, 1862 |
| Catalog names | |
| NGC 4402 • UGC 7528 • PGC 40644 • CGCG 070-071 • MCG + 02-32-44 • IRAS 12235 + 1323 • 2MASX J12260756 + 1306460 • VCC 873 • LDCE 0904 NED107 | |
NGC 4402 is a spiral galaxy of Hubble type Sb in the constellation Virgo the northern sky . It is likely around 50 million light years away from the Milky Way and about 55,000 light years in diameter .
The radial velocity of 230 km / s of NGC 4402 is too low to provide a reliable indicator of the distance, as particular velocities (without Hubble expansion) could make up a substantial part of the value. In fact, the 10 million light-year distance corresponding to its speed is far less than the redshift-independent distance estimate of around 50 million light-years.
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. It is listed as a member of the Virgo cluster under catalog number VCC 873 .
The object was discovered on March 5, 1862 by the German astronomer Arthur von Auwers .
Special
There are at least four indications that NGC 4402 is being deprived of its gas supplies ( ram-pressure stripping ) by the dynamic pressure that arises when it moves through the intergalactic gas of the Virgo Cluster .
Discovered supernovae
- On March 28, 1976 by Miklós Lovas the supernova SN 1976b discovered type Ib in this galaxy.
Web links
Individual evidence
- ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
- ↑ a b c d e f SEDS : NGC 4402
- ↑ Seligman
- ↑ Galaxy Cleaned Out by Encounter with Hot Cluster Gas. National Optical Astronomy Observatory, June 3, 2008, accessed August 12, 2008 .
- ^ Searching NED for object "SN 1976B *". In: NASA / IPAC Extragalactic Database. Retrieved October 12, 2008 .
- ^ List of Supernovae. HARVARD-SMITHSONIAN CENTER FOR ASTROPHYSICS, accessed August 12, 2008 .
- ↑ Spiral Galaxy NGC 4402 in Virgo. Kopernik Observatory & Science Education Center, June 24, 2003, accessed August 12, 2008 .