NGC 4388
Galaxy NGC 4388 |
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Image taken by the Hubble Space Telescope from the center of the galaxy NGC 4388 | |
AladinLite | |
Constellation | Virgin |
Position equinox : J2000.0 , epoch : J2000.0 |
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Right ascension | 12 h 25 m 46.7 s |
declination | + 12 ° 39 ′ 44 ″ |
Appearance | |
Morphological type | SA (s) b: sp; Sy2 Sy1.9 |
Brightness (visual) | 11.0 mag |
Brightness (B-band) | 11.8 mag |
Angular expansion | 5.6 ′ × 1.5 ′ |
Position angle | 92 ° |
Surface brightness | 13.2 mag / arcmin² |
Physical data | |
Affiliation | Virgo Galaxy Cluster LGG 285 |
Redshift | 0.008419 ± 0.000003 |
Radial velocity | 2524 ± 1 km / s |
Stroke distance v rad / H 0 |
(110 ± 8) x 10 6 ly (33.8 ± 2.4) Mpc |
diameter | 85,000 ly |
history | |
discovery | Wilhelm Herschel |
Discovery date | April 17, 1784 |
Catalog names | |
NGC 4388 • UGC 7520 • PGC 40581 • CGCG 070-068 • MCG + 02-32-041 • IRAS 12232 + 1256 • 2MASX J12254682 + 1239434 • VCC 836 • GC 2949/2956 • H II 168 • h 1244 • LDCE 0904 NED100 |
NGC 4388 is a spiral galaxy of the Hubble type SA (s) b: in the constellation Virgo in the northern sky . The galaxy is 110 million light years from the Milky Way and is classified as a Seyfert-2 galaxy . It is part of the Virgo Galaxy Cluster , a collection of more than 1300 galaxies in this area. However, the galaxy is listed as a member (VCC 836) of the Virgo Cluster, and its peculiar appearance (as if a spiral galaxy was embedded in an elliptical galaxy) is believed to be due to gravitational or physical interactions with members of that cluster. In this case it would only be about 50 to 60 million light years and about 105 to 110,000 light years.
Narrow-band images show escaping gas clouds 100,000 light years in size. It is believed that they were formed when the galaxy hit hot intergalactic medium.
The object was discovered by the astronomer Wilhelm Herschel using his 18.7 inch telescope on April 17, 1784.
Web links
- astronews.com: Picture of the day December 6, 2016
- SIMBAD Astronomical Database
Individual evidence
- ↑ a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
- ↑ a b c d e f SEDS : NGC 4388
- ↑ Michitoshi Yoshida, Youichi Ohyama, Masanori Iye, Kentaro Aoki, Nobunari Kashikawa, Toshiyuki Sasaki, Kazuhiro Shimasaku, Masafumi Yagi, Sadanori Okamura, Mamoru Doi, Hisanori Furusawa, Masaru Hamiyaki, Satiyuki Komi Miyazaki Miyazaki Mama, Fiyazaki, Yutaka Nakata, Masami Ouchi, Maki Sekiguchi, Naoki Yasuda: Subaru Deep Spectroscopy of the Very Extended Emission-Line Region of NGC 4388: Ram Pressure Stripped Gas Ionized by Nuclear Radiation . In: The Astronomical Journal . 2004. arxiv : astro-ph / 0310044 . bibcode : 2004AJ .... 127 ... 90Y .
- ↑ Seligman