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.

Telif:

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

Görüntü Hakkında

Kimlik:eso1645a
Tür:Gözlem
Yayın tarihi:21 Aralık 2016 12:00
Bağlantılı bültenler:eso1645
Boyut:955 x 692 px

Nesne Hakkında

Adı:Arp 220
Tür:Local Universe : Galaxy : Type : Interacting
Constellation:Serpens Caput
Kategori:Galaxies

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Koordinatlar

Position (RA):15 34 57.37
Position (Dec):23° 30' 10.70"
Field of view:0.40 x 0.29 arcminutes
Yönelim:Kuzey yönü 67.7° sol derece kadar dik konumdan sapma göstermektedir

Renkler & Filtreler

BantDalgaboyuTeleskop
Optik
B
435 nmHubble Space Telescope
ACS
Optik
V
555 nmHubble Space Telescope
ACS
Optik
I
814 nmHubble Space Telescope
ACS
Milimetre2.6 mmAtacama Large Millimeter/submillimeter Array
Band 5

 

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