ALMA pinpoints early galaxies

A team of astronomers has used ALMA (the Atacama Large Millimeter/submillimeter Array) to pinpoint the locations of over 100 of the most fertile star-forming galaxies in the early Universe.

This image shows close-ups of a selection of these galaxies. The ALMA observations, at submillimetre wavelengths, are shown in orange/red and are overlaid on an infrared view of the region as seen by the IRAC camera on the Spitzer Space Telescope.

The best map so far of these distant dusty galaxies was made using the Atacama Pathfinder Experiment (APEX), but the observations were not sharp enough to unambiguously identify these galaxies in images at other wavelengths. ALMA needed just two minutes per galaxy to pinpoint each one within a comparatively tiny region 200 times smaller than the broad APEX blobs, and with three times the sensitivity.

Autorska prava:

ALMA (ESO/NAOJ/NRAO), J. Hodge et al., A. Weiss et al., NASA Spitzer Science Center

O slici

Id:eso1318a
Tip:Kolaž
Datum objavljivanja:17. april 2013. 12:00
Povezana saopštenja:eso1318
Veličina:1610 x 1187 px

O objektu

Tip:Early Universe : Galaxy
Kategorija:Galaxies

Formati slika

Veliki JPEG
261,5 KB

Boje i flteri

OpsegTeleskop
Infracrveni Spitzer Space Telescope
IRAC (Spitzer)
MilimetarAtacama Large Millimeter/submillimeter Array