NGC 7257: spiral disk and globular star clusters at the core of a colliding galaxy

Esahubble_opo9311b_1024

esahubble_opo9311b May 25th, 1993

Credit: B. Whitmore (STScI), and NASA

A NASA Hubble Space Telescope (HST) image of the core of the peculiar galaxy NGC 7252 reveals a striking "mini-spiral" disk of gas and stars, and about 40 exceptionally bright and young globular star clusters. The strong spiral structure is 10,000 light-years across (7 arc seconds); the entire picture is 46,000 light-years across. Hubble's resolution is so good the astronomers can measure the diameters of the clusters (0.04 arc seconds, the apparent size of a dime at a distance of 60 miles). They turn out to be about 60 light-years in diameter, the same size as globular clusters that orbit our Milky Way galaxy. This visible light image was taken with the Wide Field and Planetary Camera (WFPC) in PC mode, on October 10, 1992.

Provider: Hubble Space Telescope | ESA

Image Source: https://www.spacetelescope.org/images/opo9311b/

Curator: ESA/Hubble, Garching bei München, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

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Image Details Image Details

Image Type
Observation
Object Name
NGC 7257
Subject - Distant Universe
Galaxy > Type > Spiral
Esahubble_opo9311b_128
 

Position Details Position Details

Position (ICRS)
RA = 22h 20m 44.9s
DEC = -24° 40’ 45.3”
Orientation
North is 124.2° CCW
Field of View
0.6 x 0.5 arcminutes
Constellation
Aquarius

Color Mapping Details Color Mapping

  Telescope Spectral Band Wavelength
Hubble (WFPC2) Optical -
Esahubble_opo9311b_1280
×
ID
opo9311b
Subject Category
D.5.1.1  
Subject Name
NGC 7257
Credits
B. Whitmore (STScI), and NASA
Release Date
1993-05-25T06:00:00
Lightyears
Redshift
Reference Url
https://www.spacetelescope.org/images/opo9311b/
Type
Observation
Image Quality
Distance Notes
Distance in light years from NED
Facility
Hubble Space Telescope
Instrument
WFPC2
Color Assignment
Band
Optical
Bandpass
Central Wavelength
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
335.187010184, -24.6792493813
Reference Dimension
800.0, 715.0
Reference Pixel
400.0, 357.5
Scale
-1.15103541923e-05, 1.15103541923e-05
Rotation
124.17999999999996
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
opo9311b
Resource URL
http://www.spacetelescope.org/static/archives/images/original/opo9311b.tif
Related Resources
Metadata Date
2003-12-09T17:38:49+01:00
Metadata Version
1.1
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Detailed color mapping information coming soon...

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