Squabbling Galactic Siblings

Esahubble_potw2130a_1024

esahubble_potw2130a July 26th, 2021

Credit: ESA/Hubble & NASA, J. Dalcanton

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 Video of Squabbling Galactic Siblings

Provider: Hubble Space Telescope | ESA

Image Source: https://esahubble.org/images/potw2130a/

Curator: ESA/Hubble, Baltimore, MD, United States

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
Arp 195
Esahubble_potw2130a_128
 

Position Details

Position (ICRS)
RA = 8h 53m 53.8s
DEC = 35° 8’ 50.7”
Orientation
North is 113.2° CW
Field of View
3.2 x 2.1 arcminutes
Constellation
Lynx

Color Mapping

  Telescope Spectral Band Wavelength
Luminosity Hubble (ACS) Optical (V) 606.0 nm
Red SDSS (None) Optical (I) 762.0 nm
Green SDSS (None) Optical (R) 623.0 nm
Blue SDSS (None) Optical (G) 477.0 nm
Blue Blanco-4m (DECam) Optical (G) 474.0 nm
Green Blanco-4m (DECam) Optical (R) 644.0 nm
Red Blanco-4m (DECam) Optical (I) 785.0 nm
Spectrum_base
Luminosity
Red
Green
Blue
Blue
Green
Red
Esahubble_potw2130a_1280
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ID
potw2130a
Subject Category
Subject Name
Arp 195
Credits
ESA/Hubble & NASA, J. Dalcanton
Release Date
2021-07-26T06:00:00
Lightyears
Redshift
Reference Url
https://esahubble.org/images/potw2130a/
Type
Observation
Image Quality
Distance Notes
Facility
Hubble Space Telescope, SDSS, SDSS, SDSS, Víctor M. Blanco 4-meter Telescope, Víctor M. Blanco 4-meter Telescope, Víctor M. Blanco 4-meter Telescope
Instrument
ACS, None, None, None, DECam, DECam, DECam
Color Assignment
Luminosity, Red, Green, Blue, Blue, Green, Red
Band
Optical, Optical, Optical, Optical, Optical, Optical, Optical
Bandpass
V, I, R, G, G, R, I
Central Wavelength
606, 762, 623, 477, 474, 644, 785
Start Time
Integration Time
Dataset ID
None, None, None, None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
133.47408831324185, 35.14741564544941
Reference Dimension
3785.0, 2550.0
Reference Pixel
1892.5, 1275.0
Scale
-1.3876192454842609e-05, 1.3876192454842609e-05
Rotation
-113.23999999999923
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
ESA/Hubble
URL
https://esahubble.org
Name
Email
Telephone
Address
ESA Office, Space Telescope Science Institute, 3700 San Martin Dr
City
Baltimore
State/Province
MD
Postal Code
21218
Country
United States
Rights
Creative Commons Attribution 4.0 International License
Publisher
ESA/Hubble
Publisher ID
esahubble
Resource ID
potw2130a
Metadata Date
2021-07-14T22:15:04+02:00
Metadata Version
1.1
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Detailed color mapping information coming soon...

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There is no distance meta data in this image.

 

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