Astronomy:NGC 4845
| NGC 4845 | |
|---|---|
 NGC 4845 as seen by HST | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 12h 58m 01.2s[1] |
| Declination | 1° 34′ 33″ |
| Redshift | z=0.004110 (1232 km/s)[1] |
| Distance | 65 Mly |
| Apparent magnitude (V) | 11.2[2] |
| Characteristics | |
| Type | Sab[2] |
| Apparent size (V) | 4′.9 × 1′.3[2] |
| Other designations | |
| UGC 08087, 2MASX J12580124+0134320, NGC 4910, PGC 44392[3] | |
NGC 4845 (also known as NGC 4910) is a spiral galaxy located in the constellation Virgo around 65 million light years away.[4] The galaxy was originally discovered by William Herschel in 1786.[5] It is a member of the NGC 4753 Group of galaxies, which is a member of the Virgo II Groups, a series of galaxies and galaxy clusters strung out from the southern edge of the Virgo Supercluster.[6]
The galaxy has a supermassive black hole at its center with a mass of 300,000[math]\displaystyle{ \begin{smallmatrix}M_\odot\end{smallmatrix} }[/math]. In 2013, the ESA observed the black hole absorbing matter from a nearby, low-mass object; possibly a brown dwarf star.[7] The observed X-ray flare was caught by the ESA's INTEGRAL telescope.[8]
Gallery
NGC 4845's glowing centre hosts a gigantic version of a black hole.[9]
References
- ↑ 1.0 1.1 "NCG 4845". NASA/IPAC Extragalactic Database. http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+4845&extend=no.
- ↑ 2.0 2.1 2.2 "NCG 4845". Deep Sky Observatory. http://dso-browser.com/dso/info/NGC/4845.
- ↑ "NGC 4910". The NGC/IC Project. http://www.ngcicproject.org/ngcicdb.asp.
- ↑ Morrow, Ashley (2016-01-08). "Hubble Sees a Supermassive and Super-hungry Galaxy". http://www.nasa.gov/image-feature/goddard/2016/hubble-sees-a-supermassive-and-super-hungry-galaxy.
- ↑ "NGC Objects: NGC 4800-4849". Courtney Seligman. http://cseligman.com/text/atlas/ngc48.htm#4845.
- ↑ "The Virgo III Groups". Atlas of the Universe. http://www.atlasoftheuniverse.com/galgrps/viriii.html.
- ↑ "Astronomers watch as supermassive black hole 'wakes up,' swallows planet whole". National Post. April 4, 2013. http://news.nationalpost.com/2013/04/04/astronomers-watch-as-supermassive-black-hole-wakes-up-swallows-planet-whole/.
- ↑ Jeff LaSala (April 3, 2013). "Watch a Black Hole Feed on Its Planet-Sized Prey". Geekosystem. http://www.geekosystem.com/ngc-4845-black-hole-eats-planet/.
- ↑ "Supermassive and super-hungry". http://www.spacetelescope.org/images/potw1601a/.
External links
- NGC 4845 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
 |  |
