Squabbling Galactic Siblings

A dramatic triplet of galaxies takes centre stage in this latest Picture of the Week from the NASA/ESA Hubble Space Telescope, which captures a three-way gravitational tug-of-war between interacting galaxies. This system —known as Arp 195— is featured in the Atlas of Peculiar Galaxies, a list which showcases some of the weirder and more wonderful galaxies in the universe.

Observing time with the Hubble Space Telescope is extremely valuable, so astronomers don't want to waste a second. The schedule for Hubble observations is calculated using a computer algorithm which allows the spacecraft to occasionally gather bonus snapshots of data between longer observations. This image of the clashing triplet of galaxies in Arp 195 is one such snapshot. Extra observations such as these do more than provide spectacular images — they also help to identify promising targets to follow up with telescopes such as the upcoming NASA/ESA/CSA James Webb Space Telescope.

Links

Credit:

ESA/Hubble & NASA, J. Dalcanton

About the Image

Id:potw2130a
Type:Observation
Release date:26 July 2021, 06:00
Size:3785 x 2550 px

About the Object

Name:Arp 195
Constellation:Lynx
Category:Galaxies

Image Formats

Large JPEG
1.8 MB
Screensize JPEG
128.7 KB

Zoomable


Wallpapers

1024x768
146.0 KB
1280x1024
249.8 KB
1600x1200
373.2 KB
1920x1200
461.7 KB
2048x1536
639.6 KB

Coordinates

Position (RA):8 53 53.78
Position (Dec):35° 8' 50.70"
Field of view:3.15 x 2.12 arcminutes
Orientation:North is 113.2° right of vertical


Colours & filters

BandWavelengthTelescope
Optical
G
474 nmVíctor M. Blanco 4-meter Telescope
DECam
Optical
G
477 nmSDSS
Optical
R
623 nmSDSS
Optical
R
644 nmVíctor M. Blanco 4-meter Telescope
DECam
Optical
I
785 nmVíctor M. Blanco 4-meter Telescope
DECam
Optical
I
762 nmSDSS
Optical
V
606 nm Hubble Space Telescope
ACS

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