Messier 84
| Galaxy Messier 84 |
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|---|---|
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| Center of the galaxy Messier 84, image taken by 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 25 m 03.7 s |
| declination | + 12 ° 53 ′ 13 ″ |
| Appearance | |
| Morphological type | E1 Sy2 |
| Brightness (visual) | 9.2 likes |
| Brightness (B-band) | 10.2 mag |
| Angular expansion | 6.5 ′ × 5.6 ′ |
| Position angle | 135 ° |
| Surface brightness | 13.2 mag / arcmin² |
| Physical data | |
| Affiliation | Virgo Galaxy Cluster, LGG 292 |
| Redshift | 0.003392 ± 0.000017 |
| Radial velocity | 1017 ± 5 km / s |
|
Stroke distance v rad / H 0 |
(43 ± 3) x 10 6 ly (13.2 ± 0.9) Mpc |
| diameter | 90,000 ly |
| history | |
| discovery | Johann Koehler |
| Discovery date | May 5, 1779 |
| Catalog names | |
| M 84 • NGC 4374 • UGC 7494 • PGC 40455 • CGCG 070-058 • MCG + 02-32-034 • VCC 763 • GC 2930 • h 1237 • 3C 272.1 | |
Messier 84 (also known as NGC 4374 ) is a 9.2 mag bright galaxy with an area of 6 ′, 5 × 5 ′, 6 in the constellation Virgo .
M84 is located in the center of the Virgo galaxy cluster in the vicinity of the giant galaxy M87 and is about 43 million light years away from the Milky Way. In the past, their type was given in the Hubble sequence as E1 (elliptically flattened). Modern authors, however, tend to assume that it is a lens-shaped galaxy of the S0 type that we are looking at practically frontal.
M84 marks the beginning of the so-called Markaryan chain , a group of galaxies in an area about 1.5 degrees in diameter.
Messier 84 was first discovered by Johann Köhler on May 5, 1779 and rediscovered on March 18, 1781 by the French astronomer Charles Messier .
Supernovae
- On April 23, 1957, the Type Ia supernova SN 1957B was discovered.
- The supernova SN 1980I was discovered on June 13, 1980 .
- On December 3, 1991 the supernova SN 1991bg of type Ia-p was discovered.
Web links
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- ↑ a b c d NASA / IPAC EXTRAGALACTIC DATABASE
- ↑ a b c d e SEDS : NGC 4374
- ↑ https://cseligman.com/text/atlas/ngc43a.htm#4374
- ^ Searching NED for object "SN 1957B *". In: NASA / IPAC Extragalactic Database. Retrieved September 30, 2008 .
- ↑ a b Atlas of Supernovae. (No longer available online.) In: International Supernovae Network. Archived from the original on April 13, 2008 ; Retrieved March 19, 2008 . Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ a b c List of Supernovae. Harvard-Smithsonian Center for Astrophysics, accessed March 19, 2008 .
- ^ Searching NED for object "SN 1980I *". In: NASA / IPAC Extragalactic Database. Retrieved September 30, 2008 .
- ^ Searching NED for object "SN 1991bg *". In: NASA / IPAC Extragalactic Database. Retrieved September 30, 2008 .
