Ultraviolet Ring of Stars

Galex_glx2013-03r_img02_1024

galex_glx2013-03r_img02 June 28th, 2013

Credit: NASA/JPL-Caltech

This image from NASA's Galaxy Evolution Explorer (GALEX) shows Messier 94, also known as NGC 4736, in ultraviolet light. It is located 17 million light-years away in the constellation Canes Venatici.

The spiral galaxy is punctuated by a distinct ring of stars at its center. The young stars glow with ultraviolet light and thus appear bright to the detectors of GALEX. Astronomers think the galaxy's oval shape may be the reason for this sharp ring of star formation. The ultraviolet light at the very center of the galaxy, within the ring, is likely produced by a combination of extremely old stars, about 10 billion years old.

GALEX highlights the complex star formation history in the outer arms as well. There, the blue-white regions highlight areas of current star formation, and the diffuse faint red light is from regions where star formation ceased more than 100 million years ago.

Provider: Galaxy Evolution Explorer

Image Source: http://www.galex.caltech.edu/media/glx2013-03r_img02.html

Curator: Galaxy Evolution Explorer, Pasadena, CA, USA

Image Use Policy: Public Domain

Image Details

Image Type
Observation
Galex_glx2013-03r_img02_128
 

Position Details

Position (ICRS)
RA = 12h 50m 53.1s
DEC = 41° 7’ 17.0”
Orientation
North is up
Field of View
37.5 x 37.5 arcminutes
Constellation
Canes Venatici
Galex_glx2013-03r_img02_1280
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ID
glx2013-03r_img02
Subject Category
Subject Name
Credits
NASA/JPL-Caltech
Release Date
2013-06-28
Lightyears
Redshift
Reference Url
http://www.galex.caltech.edu/media/glx2013-03r_img02.html
Type
Observation
Image Quality
Good
Distance Notes
Facility
Instrument
Color Assignment
Band
Bandpass
Central Wavelength
Start Time
Integration Time
4004.25
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
192.7210506, 41.1213859
Reference Dimension
1500.0, 1500.0
Reference Pixel
751.0, 751.0
Scale
-4.16666666666667e-04, 4.16666666666667e-04
Rotation
0.0
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
Galaxy Evolution Explorer
URL
http://www.galex.caltech.edu
Name
Email
Telephone
Address
1200 E. California Blvd.
City
Pasadena
State/Province
CA
Postal Code
91125
Country
USA
Rights
Public Domain
Publisher
Galaxy Evolution Explorer
Publisher ID
galex
Resource ID
Resource URL
/image/galex/glx2013-03r_img02
Related Resources
Metadata Date
2013-06-27 18:37:43 -0700
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.