gingadan.com

UGC 8058 (Interacting Galaxy)


Home > Cluster > UGC8058
Down
Movie

UGC 8058
Interacting Galaxy (相互作用銀河)

別名 (Other names)
Mrk 231, Markarian 231, Vll Zw 490, QSO B1254+571

距離 (Distance)

6億光年 (600 million light-years)


星座 (Constellation)


UGC 8058 is an interacting galaxy located 600 million light years from the Earth.

UGC 8058 (Interacting Galaxy) : Picture

UGC 8058 (Interacting Galaxy)
UGC 8058 (Interacting Galaxy)
(C) NASA, ESA, the Hubble Heritage Team (STScI/AURA)-ESA/Hubble Collaboration and A. Evans (University of Virginia, Charlottesville/NRAO/Stony Brook University)
The extraordinary galaxy Markarian 231 was discovered in 1969 as part of a survey searching for galaxies with strong ultraviolet radiation. It has long tidal tails and a disturbed shape. Results from the first spectrum showed clear signs of the presence of a powerful quasar in the centre that made Markarian 231 unique in the Markarian sample.

Markarian 231 has maintained its reputation as an exceptional object since those early observations and continues to be a favourite target in all wavelength regimes. Its infrared luminosity is similar to that of quasars, making it one of the most luminous and powerful known ultraluminous infrared galaxies. Although the emission of many ultraluminous infrared galaxies appears to be dominated by energetic starbursts, Markarian 231 has been repeatedly identified as an exception and many pieces of evidence point toward an accreting black hole as the major power source behind the enormous infrared luminosity.

Although the primary power source behind the incredible far-infrared luminosity of Markarian 231 is almost certainly an active nucleus, the galaxy is also undergoing an energetic starburst. Most dramatically a nuclear ring of active star formation with a rate estimated to be greater than 100 solar masses per year has been found in the centre.

UGC 8058 (Interacting Galaxy)
UGC 8058 (Interacting Galaxy)
(C) NASA/ESA
Up
Up

UGC 8058 (Interacting Galaxy) : Movie

Up
Home > Cluster > UGC8058
Up

gingadan.com ブログパーツ