* Astronomy

Members Login

Post Info

TOPIC: NGC 4845

Blobrana

L

Posts: 131433

Date: Jan 8 17:12 2016

RE: NGC 4845	Permalink

Hubble Sees a Supermassive and Super-hungry Galaxy NGC 4845's glowing center hosts a gigantic version of a black hole, known as a supermassive black hole. The presence of a black hole in a distant galaxy like NGC 4845 can be inferred from its effect on the galaxy's innermost stars; these stars experience a strong gravitational pull from the black hole and whizz around the galaxy's center much faster than otherwise. From investigating the motion of these central stars, astronomers can estimate the mass of the central black hole - for NGC 4845 this is estimated to be hundreds of thousands times heavier than the sun. Read more __________________

Blobrana

L

Posts: 131433

Date: Jan 23 18:32 2014

NGC 4910	Permalink

NGC 4910 (also NGC 4845, UGC 08087, 2MASX J12580124+0134320 and PGC 44392) is a magnitude +11.2 almost edge-on spiral galaxy located 47 million light years away in the constellation Virgo. The galaxy was discovered by British astronomer William Herschel using a 47.5 cm (18.7 inch) reflecting telescope at Datchet, Berkshire, on the 24th January 1784. The galaxy was rediscovered by Herschel in 1786 and relisted as NGC 4845. Right Ascension 12h 58m 01.2s, Declination +01° 34' 33" Read more __________________

Blobrana

L

Posts: 131433

Date: Apr 2 16:32 2013

NGC 4845	Permalink

Black hole wakes up and has a light snack Astronomers have watched as a black hole woke up from a decades-long slumber to feed on a low-mass object - either a brown dwarf or a giant planet - that strayed too close. A similar feeding event, albeit on a gas cloud, will soon happen at the black hole at the centre of our own Milky Way Galaxy. Read more __________________

Page 1 of 1 sorted by

Create your own FREE Forum
Report Abuse