Hubble Space Telescope visible light image "blue blobs"

A Hubble Space Telescope visible light image of bright blue star clusters found along a wispy bridge of gas that was tidally stretched between the two galaxies, and a third companion galaxy not seen in this picture. This is not the place astronomers expect to find star clusters because the density of gas is so low. Turbulence in the gas may have enhanced the density locally to trigger starbirth. The so-called "blue blobs" are clumped together in a structure called Arp's Loop. Hubble reveals the clusters contain the equivalent of five Orion Nebulae. Analysis of the stellar population in the clusters yields an age of approximately 200 million years, which coincides with the epoch of the collision.

Credit:

NASA, ESA, and D. de Mello (Catholic University of America/GSFC)

About the Image

Id:heic0801c
Type:Observation
Release date:8 January 2008, 20:00
Related releases:heic0801
Size:2586 x 1935 px

About the Object

Name:Holmberg IX, M81, M82
Type:• Local Universe : Star : Grouping : Cluster
• X - Star Clusters Images/Videos
Distance:12 million light years

Colours & filters

BandWavelengthTelescope
Optical
B
435 nm Hubble Space Telescope
ACS
Optical
Pseudogreen (B+I)
Hubble Space Telescope
ACS
Infrared
I
814 nm Hubble Space Telescope
ACS

Image Formats

Large JPEG
3.8 MB
Screensize JPEG
444.6 KB

Zoomable


Also see our