The lensed galaxy

ALMA’s Long Baseline Campaign has produced a spectacularly detailed image of a distant galaxy being gravitationally lensed, revealing star-forming regions — something that has never seen before at this level of detail in a galaxy so remote. The new observations are far more detailed than any previously made of such a distant galaxy, including those made using the NASA/ESA Hubble Space Telescope, and reveal clumps of star formation in the galaxy equivalent to giant versions of the Orion Nebula.

The resulting reconstructed image of the distant galaxy using sophisticated models of the magnifying gravitational lens, reveal fine structures within the ring that have never been seen before: Several dust clouds within the galaxy, which are thought to be giant cold molecular clouds, the birthplaces of stars and planets.

Note that some of the smaller structures visible here might be artifacts caused by the reconstruction method.

Credit:

ALMA (NRAO/ESO/NAOJ)/Mark Swinbank (Durham University)

About the Image

Id:eso1522b
Type:Observation
Release date:8 June 2015, 20:00
Related releases:eso1522
Size:478 x 570 px

About the Object

Name:H-ATLAS J090311.6+003906, SDP 81
Type:Early Universe : Galaxy : Type : Gravitationally Lensed
Distance:z=3.04 (redshift)
Constellation:Hydra
Category:Galaxies

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Coordinates

Position (RA):9 3 11.56
Position (Dec):0° 39' 6.66"
Field of view:0.06 x 0.08 arcminutes
Orientation:North is 18.9° right of vertical

Colours & filters

BandTelescope
MillimeterAtacama Large Millimeter/submillimeter Array

 

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