Active galaxy Markarian 509
This  image from the NASA/ESA Hubble Space Telescope shows the galaxy  Markarian 509. The bright object at the centre of the galaxy, which  appears like a star, is an active galactic nucleus. This is a bright  celestial phenomenon caused by matter glowing as it falls into a  supermassive black hole at the heart of the galaxy.
The  surroundings of the black hole in Markarian 509 have been studied in a  major campaign which includes the NASA/ESA Hubble Space Telescope, as  well as other telescopes in space and on the ground.
NASA, ESA, J. Kriss (STScI) and J. de Plaa (SRON)
About the Image
| Id: | ann1121a | 
|---|---|
| Type: | Observation | 
| Release date: | 29 September 2011, 14:10 | 
| Related announcements: | ann1121 | 
| Size: | 1500 x 1500 px | 
About the Object
| Name: | Mrk 509 | 
|---|---|
| Type: | Local Universe : Galaxy : Activity : AGN : Seyfert | 
| Distance: | 500 million light years | 
| Constellation: | Aquarius | 
| Category: | Galaxies | 
Coordinates
| Position (RA): | 20 44 9.73 | 
|---|---|
| Position (Dec): | -10° 43' 24.17" | 
| Field of view: | 0.17 x 0.17 arcminutes | 
| Orientation: | North is 56.6° left of vertical | 
Colours & filters
| Band | Wavelength | Telescope | 
|---|---|---|
| Optical y | 547 nm | Hubble Space Telescope WFPC2 | 
 
    

