Astronomers Discover Nearby Spiral Galaxy Hidden Behind the Milky Way

Stsci_1994-51a_1024

stsci_1994-51a November 3rd, 1994

Credit: Dwingeloo Obscured Galaxy Survey

This visual light image of a newly discovered galaxy called "Dwingeloo 1," was taken with the Isaac Newton Telescope on La Palma in the Canary Islands (Administered by the Royal Greenwich Observatory, United Kingdom). Though only ten million light-years away (or five times the distance of the Andromeda galaxy - closest city of stars to our Milky Way Galaxy), this newly discovered collection of more than 100 billion stars has gone undetected previously because it is hidden from view behind our Milky Way galaxy. It probably belongs to a nearby group of galaxies that include two named Maffei 1 and 2. The galaxy appears as a distinctive barred-spiral-shaped object embedded in a dense starfield of hundreds of foreground stars comprising our own Milky Way galaxy. Because the galaxy is only faintly visible through obscuring dust and gas in the Milky Way, it is possible that astronomers are seeing only the central part of a much larger galaxy. The new galaxy was initially detected in radio light that penetrates this obscuring dust, and the ground-based telescopes were used to directly observe the galaxy. This color picture is a combination of three images taken through several color filters. The picture covers an area of the sky 1/6 the diameter of the full Moon (about 5 arc-minutes across).

Provider: Space Telescope Science Institute

Image Source: https://hubblesite.org/contents/news-releases/1994/news-1994-51

Curator: STScI, Baltimore, MD, USA

Image Use Policy: http://hubblesite.org/copyright/

Image Details Image Details

Image Type
Observation
Object Name
Dwingeloo 1
Subject - Local Universe
Galaxy > Type > Spiral

Distance Details Distance

Universescale2
10,000,000 light years
Stsci_1994-51a_128
 

Position Details Position Details

Position (ICRS)
RA = 2h 56m 51.9s
DEC = 58° 54’ 41.7”
Orientation
North is 0.3° CCW
Field of View
6.9 x 8.7 arcminutes
Constellation
Cassiopeia

Color Mapping Details Color Mapping

  Telescope Spectral Band Wavelength
Blue INT (WFC) Optical (V) -
Stsci_1994-51a_1280
×
ID
1994-51a
Subject Category
C.5.1.1  
Subject Name
Dwingeloo 1
Credits
Dwingeloo Obscured Galaxy Survey
Release Date
1994-11-03T00:00:00
Lightyears
10,000,000
Redshift
10,000,000
Reference Url
https://hubblesite.org/contents/news-releases/1994/news-1994-51
Type
Observation
Image Quality
Good
Distance Notes
Distance in Lightyears
Facility
Isaac Newton Telescope
Instrument
WFC
Color Assignment
Blue, Green, Red
Band
Optical, Optical, Optical
Bandpass
V, R, I
Central Wavelength
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
2000.0
Reference Value
44.21638100000, 58.91159300000
Reference Dimension
2160.00, 2733.00
Reference Pixel
979.67767737307, 1210.33561363178
Scale
-0.00005293969, 0.00005293969
Rotation
0.30298251313
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
World Coordinate System resolved using PinpointWCS 0.9.2 revision 218+ by the Chandra X-ray Center
Creator (Curator)
STScI
URL
http://hubblesite.org
Name
Space Telescope Science Institute Office of Public Outreach
Email
outreach@stsci.edu
Telephone
410-338-4444
Address
3700 San Martin Drive
City
Baltimore
State/Province
MD
Postal Code
21218
Country
USA
Rights
http://hubblesite.org/copyright/
Publisher
STScI
Publisher ID
stsci
Resource ID
STSCI-H-p9451a-f-2160x2733.tif
Resource URL
https://mast.stsci.edu/api/latest/Download/file?uri=mast:OPO/product/STSCI-H-p9451a-f-2160x2733.tif
Related Resources
http://hubblesite.org/newscenter/archive/releases/1994/51
Metadata Date
2022-07-06T00:00:00
Metadata Version
1.2
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Detailed color mapping information coming soon...

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Universescalefull
10,000,000 light years

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