The merging galaxy system Arp 220 from ALMA and Hubble

The compound view shows a new ALMA Band 5 image of the colliding galaxy system Arp 220 (in red) on top of an image from the NASA/ESA Hubble Space Telescope (blue/green). With the newly installed Band 5 receivers, ALMA has now opened its eyes to a whole new section of this radio spectrum, creating exciting new observational possibilities and improving the telescope’s ability to search for water in the Universe.

In the Hubble image, most of the light from this dramatic merging galaxy pair is hidden behind dark clouds of dust. ALMA's observations in Band 5 show a completely different view. Here, Arp 220's famous double nucleus, invisible for Hubble, is by far the brightest feature in the whole galaxy complex. In this dense, double centre, the bright emission from water and other molecules revealed by the new Band 5 receivers will give astronomers new insights into star formation and other processes in this extreme environment.

This image is one of the first taken using Band 5 and was intended to verify the scientific capability of the new receivers. The ALMA image includes data recording emission from water, CS and HCN in the galaxies.

Oikeudet:

ALMA(ESO/NAOJ/NRAO)/NASA/ESA and The Hubble Heritage Team (STScI/AURA)

Kuvasta

Tunnistus:eso1645a
Tyyppi:Havainto
Julkaisupäivä:21. joulukuuta 2016 12:00
Vastaavat julkaisut:eso1645
Koko:955 x 692 px

Kohteesta

Nimi:Arp 220
Tyyppi:Local Universe : Galaxy : Type : Interacting
Constellation:Serpens Caput
Kategoria:Galaxies

Kuvaformaatit

Suuri JPEG
166,1 KB
Kokoruudun JPEG
145,5 KB

Zoomattavissa


Taustakuvat

1024x768
181,7 KB
1280x1024
276,8 KB
1600x1200
371,7 KB
1920x1200
423,2 KB
2048x1536
537,9 KB

Koordinaatit

Position (RA):15 34 57.37
Position (Dec):23° 30' 10.70"
Field of view:0.40 x 0.29 arcminutes
Suuntaus:Pohjoinen on 67.7° vasen pystysuuntaan nähden

Värit ja suotimet

KaistaAallonpituusTeleskooppi
Optinen
B
435 nmHubble Space Telescope
ACS
Optinen
V
555 nmHubble Space Telescope
ACS
Optinen
I
814 nmHubble Space Telescope
ACS
Millimetri2.6 mmAtacama Large Millimeter/submillimeter Array
Band 5

 

Katso myös