Montage of the SDP.81 Einstein Ring and the lensed galaxy (no annotations)

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 left panel shows the foreground lensing galaxy (observed with Hubble), and the gravitationally lensed galaxy SDP.81, which forms an almost perfect Einstein Ring, is hardly visible.

The middle image shows the sharp ALMA image of the Einstein ring, with the foreground lensing galaxy being invisible to ALMA. The resulting reconstructed image of the distant galaxy (right) 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.

Telif:

ALMA (NRAO/ESO/NAOJ)/Y. Tamura (The University of Tokyo)/Mark Swinbank (Durham University)

Görüntü Hakkında

Kimlik:eso1522e
Tür:Kolaj
Yayın tarihi:08 Haziran 2015 20:00
Bağlantılı bültenler:eso1522
Boyut:2537 x 928 px

Nesne Hakkında

Adı:Einstein Ring, SDP 81
Tür:Early Universe : Galaxy : Type : Gravitationally Lensed
Early Universe : Cosmology : Phenomenon : Lensing
Uzaklık:z=3.04 (kırmızıya kayma)
Kategori:Galaxies

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Renkler & Filtreler

BantTeleskop
MilimetreAtacama Large Millimeter/submillimeter Array

 

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