A remarkable galactic hybrid

This NASA/ESA Hubble Space Telescope image showcases the remarkable galaxy UGC 12591. Classified as an S0/Sa galaxy, UGC 12591 sits somewhere between a lenticular and a spiral. It lies just under 400 million light-years away from us in the westernmost region of the Pisces–Perseus Supercluster, a long chain of galaxy clusters that stretches out for 250 million light-years — one of the largest known structures in the cosmos.

The galaxy itself is also extraordinary: it is incredibly massive. The galaxy and its halo together contain several hundred billion times the mass of the Sun; four times the mass of the Milky Way. It also whirls round extremely quickly, rotating at speeds of up to 1.8 million kilometres per hour!

Observations with Hubble are helping astronomers to understand the mass of UGC 1259, and to determine whether the galaxy simply formed and grew slowly over time, or whether it might have grown unusually massive by colliding and merging with another large galaxy at some point in its past.

Credit:

ESA/Hubble & NASA

About the Image

Id:potw1709a
Type:Observation
Release date:27 February 2017, 06:00
Size:4096 x 3411 px

About the Object

Name:LEDA 71392, UGC 12591
Type:Local Universe : Galaxy : Type : Spiral
Local Universe : Galaxy : Type : Lenticular
Constellation:Pegasus
Category:Galaxies

Image Formats

Large JPEG
2.8 MB
Screensize JPEG
116.3 KB

Zoomable


Wallpapers

1024x768
108.6 KB
1280x1024
184.3 KB
1600x1200
290.6 KB
1920x1200
378.9 KB
2048x1536
527.0 KB

Coordinates

Position (RA):23 25 23.76
Position (Dec):28° 29' 50.04"
Field of view:2.71 x 2.25 arcminutes
Orientation:North is 119.2° right of vertical

Colours & filters

BandWavelengthTelescope
Optical
V
606 nm Hubble Space Telescope
WFC3
Infrared
I
814 nm Hubble Space Telescope
WFC3

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