Tuesday, June 10, 2014

Hunting Dogs fuzzies

NGC5033 (lower) and NGC5005 are two galaxies that weakly influence each other gravitionally. The spiral arms of NGC5033 are warped and this is believed to be result of these interactions. The galaxy has been discovered 1st of May, 1785 by William Herschel. NGC5033 contains Seyfert nucleus that is thought to contain supermassive black hole. The bright emission from the core region is partially produced by the hot gas in the environment around this black hole. 
NGC5005 galaxy (also known as Caldwell 29) is an inclined spiral galaxy in Canes Venatici. It contains relatively bright core and bright disk that contains multiple dust lines. X-ray observations of this galaxy revealed it contains variable point-linke X-rays source in its nucleus. It may impy it also contains supermassive black hole there. Strong X-ray emission is expected from the hot, compressed gas in the environment outside the black hole in the active galaxy nucleus. 
Both galaxies compries a physical galaxy pair placed about 40 to 60 million light years away. Some scientits believe that distorted spiral arms of NGC5033 are an effect of tidal forces from nearby NGC5005, but others claim that galaxies are not yet close enough.


And annotated image for galaxy faint fuzzies chasers :) White crosses indicate galaxies brighter than 20mag. And green lines shows the most distant object I identified at this picture - it is SDSS J131123.83+364140.4 quasar  placed 11.6 billion light years away. 

Clear skies!

Monday, June 2, 2014

SDSS J131123.83+364140.4

I exposed some frames for another galactic field and as usual I inspected them a little trying to find some remote objects. This time besides a few distant and barely visible galaxy clusters a few quasars have been identified. According to current knowledge quasars are the most energetic objects from the object group called Active Galactic Nuclei. They look very similar to the star, but actually they can emit as much energy as hundred Milky Ways, so they indeed are very distant.
There are a few photons recorded in my pictures that comes from an object catalogued as SDSS J131123.83+364140.4 . This is quite faint and distant quasar with measured redshift equals 2.8759 which correnponds to the distance about 11.5 billion light years. This is the most distant object I recorded and identified so far. The light we observe now has left the quasar long time before Solar System has been created. Not spectacular object, but rather imagination test :)

Clear skies!