Faint Remnant Threads

Esahubble_potw2051a_1024

esahubble_potw2051a December 21st, 2020

Credit: ESA/Hubble & NASA, D. RosarioAcknowledgement: L. Shatz

This unusual lenticular galaxy, known as NGC 1947, has lost almost all the gas and dust from its signature spiral arms, which used to orbit around its centre. Discovered almost 200 years ago by James Dunlop, a Scottish-born astronomer who later studied the sky from Australia, NGC 1947 can only be seen from the southern hemisphere, in the constellation Dorado (The Dolphinfish). Residing around 40 million light-years away from Earth, this galaxy shows off its structure by backlighting its remaining faint gas and dust disc with millions of stars. In this picture, taken with the NASA/ESA Hubble Space Telescope, the faint remnants of the galaxys spiral arms can still be made out in the stretched thin threads of dark gas encircling it. Without most of its star-forming material, it is unlikely that many new stars will be born within NGC 1947, leaving this galaxy to continue fading with time.

Provider: Hubble Space Telescope | ESA

Image Source: https://www.spacetelescope.org/images/potw2051a/

Curator: ESA/Hubble, Garching bei München, None, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
NGC 1947
Subject - Local Universe
Galaxy > Type > Lenticular
Esahubble_potw2051a_128
 

Position Details

Position (ICRS)
RA = 5h 26m 48.1s
DEC = -63° 45’ 43.8”
Orientation
North is 131.5° CCW
Field of View
2.0 x 2.3 arcminutes
Constellation
Dorado

Color Mapping

  Telescope Spectral Band Wavelength
Blue Hubble (WFC3) Optical (V) 606.0 nm
Green Hubble (WFC3) Optical (V) 606.0 nm
Green Hubble (WFC3) Infrared (H) 1.6 µm
Red Hubble (WFC3) Infrared (H) 1.6 µm
Luminosity Hubble (WFC3) Optical (V) 606.0 nm
Spectrum_base
Blue
Green
Green
Red
Luminosity
Esahubble_potw2051a_1280
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ID
potw2051a
Subject Category
C.5.1.3  
Subject Name
NGC 1947
Credits
ESA/Hubble & NASA, D. RosarioAcknowledgement: L. Shatz
Release Date
2020-12-21T06:00:00
Lightyears
Redshift
Reference Url
https://www.spacetelescope.org/images/potw2051a/
Type
Observation
Image Quality
Distance Notes
Facility
Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope
Instrument
WFC3, WFC3, WFC3, WFC3, WFC3
Color Assignment
Blue, Green, Green, Red, Luminosity
Band
Optical, Optical, Infrared, Infrared, Optical
Bandpass
V, V, H, H, V
Central Wavelength
606, 606, 1600, 1600, 606
Start Time
Integration Time
Dataset ID
None, None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
81.7004299725, -63.76215773
Reference Dimension
3071.0, 3473.0
Reference Pixel
1535.5, 1736.5
Scale
-1.10084007941e-05, 1.10084007941e-05
Rotation
131.54000000000065
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
ESA/Hubble
URL
http://www.spacetelescope.org
Name
Leo Shatz
Email
Telephone
Address
Karl-Schwarzschild-Strasse 2
City
Garching bei München
State/Province
None
Postal Code
D-85748
Country
Germany
Rights
Creative Commons Attribution 4.0 International License
Publisher
ESA/Hubble
Publisher ID
esahubble
Resource ID
potw2051a
Metadata Date
2020-10-29T16:23+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.