A distorted duo

Esahubble_potw1733a_500

esahubble_potw1733a August 14th, 2017

Credit: ESA/Hubble & NASA

Gravity governs the movements of the cosmos. It draws flocks of galaxies together to form small groups and more massive galaxy clusters, and brings duos so close that they begin to tug at one another. This latter scenario can have extreme consequences, with members of interacting pairs of galaxies often being dramatically distorted, torn apart, or driven to smash into one another, abandoning their former identities and merging to form a single accumulation of gas, dust, and stars. The subject of this NASA/ESA Hubble Space Telescope image, IC 1727, is currently interacting with its near neighbour, NGC 672 (which is just out of frame). The pairs interactions have triggered peculiar and intriguing phenomena within both objects most noticeably in IC 1727. The galaxys structure is visibly twisted and asymmetric, and its bright nucleus has been dragged off-centre. In interacting galaxies such as these, astronomers often see signs of intense star formation (in episodic flurries known as starbursts) and spot newly-formed star clusters. They are thought to be caused by gravity churning, redistributing, and compacting the gas and dust. In fact, astronomers have analysed the star formation within IC 1727 and NGC 672 and discovered something interesting observations show that simultaneous bursts of star formation occurred in both galaxies some 20 to 30 and 450 to 750 million years ago. The most likely explanation for this is that the galaxies are indeed an interacting pair, approaching each other every so often and swirling up gas and dust as they pass close by.

Image Source: https://www.spacetelescope.org/images/potw1733a/

Curator: ESA/Hubble, Garching bei München, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
IC 1727 UGC 1249
Subject - Local Universe
Galaxy » Type » Interacting
Esahubble_potw1733a_128
 

Position Details

Position (ICRS)
RA = 1h 47m 29.2s
DEC = 27° 20’ 4.8”
Orientation
North is 11.7° CCW
Field of View
2.4 x 2.4 arcminutes
Constellation
Triangulum

Color Mapping

  Telescope Spectral Band Wavelength
Arrow_left_red Hubble Space Telescope (ACS) Infrared (I) 814.0 nm
Arrow_left_red Hubble Space Telescope (WFC3) Optical (H-alpha) 657.0 nm
Arrow_left_green Hubble Space Telescope (ACS) Optical (V) 606.0 nm
Arrow_left_blue Hubble Space Telescope (WFC3) Optical (B) 438.0 nm
Arrow_left_blue Hubble Space Telescope (WFC3) Ultraviolet (UV) 336.0 nm
Arrow_left_purple Hubble Space Telescope (WFC3) Ultraviolet (UV) 257.0 nm
Spectrum_base
Arrow_top_red
Arrow_top_red
Arrow_top_green
Arrow_top_blue
Arrow_top_blue
Arrow_top_purple
Esahubble_potw1733a_1280
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ID
potw1733a
Subject Category
C.5.1.7  
Subject Name
IC 1727, UGC 1249
Credits
ESA/Hubble & NASA
Lightyears
Redshift
Reference Url
https://www.spacetelescope.org/images/potw1733a/
Type
Observation
Image Quality
Distance Notes
Facility
Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope
Instrument
ACS, WFC3, ACS, WFC3, WFC3, WFC3
Color Assignment
Red, Red, Green, Blue, Blue, Purple
Band
Infrared, Optical, Optical, Optical, Ultraviolet, Ultraviolet
Bandpass
I, H-alpha, V, B, UV, UV
Central Wavelength
814, 657, 606, 438, 336, 257
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
26.8714652377, 27.3346531031
Reference Dimension
3653.0, 3602.0
Reference Pixel
1826.5, 1801.0
Scale
-1.10085923044e-05, 1.10085923044e-05
Rotation
11.66
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
ESA/Hubble
URL
http://www.spacetelescope.org
Name
Email
Telephone
Address
Karl-Schwarzschild-Strasse 2
City
Garching bei München
State/Province
Postal Code
D-85748
Country
Germany
Rights
Creative Commons Attribution 4.0 International License
Publisher
ESA/Hubble
Publisher ID
esahubble
Resource ID
potw1733a
Metadata Date
2017-03-13T19:29:29+01:00
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.