Galactic refurbishment

The smudge of stars at the centre of this NASA/ESA Hubble Space Telescope image is a galaxy known as UGC 5797. UGC 5797 is an emission line galaxy, meaning that it is currently undergoing active star formation. The result is a stellar population that is constantly being refurbished as massive bright blue stars form. Galaxies with prolific star formation are not only veiled in a blue tint, but are key to the continuation of a stellar cycle.

In this image UGC 5797 appears in front of a background of spiral galaxies. Spiral galaxies have copious amounts of dust and gas — the main ingredient for stars — and therefore often also belong to the class of emission line galaxies.

Spiral galaxies have disc-like shapes that drastically vary in appearance depending on the angle at which they are observed. The collection of spiral galaxies in this frame exhibits this attribute acutely: Some are viewed face-on, revealing the structure of the spiral arms, while the two in the bottom left are seen edge-on, appearing as plain streaks in the sky. There are many spiral galaxies, with varying colours and at different angles sprinkled across this image — just take a look.

A version of this image was entered into the Hubble’s Hidden Treasures image processing competition by Luca Limatola.

Credit:

ESA/Hubble & NASA

Acknowledgement: Luca Limatola

About the Image

Id:potw1517a
Type:Observation
Release date:27 April 2015, 10:00
Size:4008 x 1960 px

About the Object

Name:UGC 5797
Type:Local Universe : Galaxy : Type : Irregular
Constellation:Sextans
Category:Galaxies

Image Formats

Large JPEG
4.2 MB
Screensize JPEG
168.7 KB

Zoomable


Wallpapers

1024x768
407.1 KB
1280x1024
765.8 KB
1600x1200
1.1 MB
1920x1200
1.3 MB
2048x1536
1.9 MB

Coordinates

Position (RA):10 39 25.02
Position (Dec):1° 43' 8.08"
Field of view:3.33 x 1.63 arcminutes
Orientation:North is 33.9° left of vertical

Colours & filters

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

Also see our


Accelerated by CDN77