W28: A Mixed Bag

Chandra_395_1024

chandra_395 June 2nd, 2008

Credit: Chandra X-ray: NASA/CXC/HSC/J. K

This composite shows a classic example of a mixed-morphology supernova remnant known as W28. The background stars and fine structure are seen in optical light (grey and white) by CTIO. The radio (orange) data are from the VLA, while the wide-field X-rays (blue) come from the ROSAT satellite. The white-bordered region of the center from Chandra (low-energy X-rays are red, the medium are green, and the high range is blue) shows the shape and extent of the high-energy emission in that region. By studying W28 and others like it, astronomers hope to better understand the complexities involved when a star explodes in a crowded neighborhood.

Provider: Chandra X-ray Observatory

Image Source: http://chandra.harvard.edu/photo/2008/w28/

Curator: Chandra X-ray Observatory, Cambridge, MA, USA

Image Use Policy: http://chandra.harvard.edu/photo/image_use.html

Image Details Image Details

Image Type
Observation
Object Name
G6.4-0.1 W28 G6.4-0.1 W28
Subject - Milky Way
Nebula > Type > Supernova Remnant
Nebula > Type > Supernova Remnant

Distance Details Distance

Universescale1
6,000 light years
Chandra_395_128
 

Position Details Position Details

Position (FK5)
RA = 17h 59m 40.3s
DEC = -23° 41’ 36.6”
Orientation
North is 179.7° CCW
Field of View
54.0 x 54.0 arcminutes
Constellation
Sagittarius

Color Mapping Details Color Mapping

  Telescope Spectral Band Wavelength
Red Chandra (ACIS) X-ray 1.13 nm
Green Chandra (ACIS) X-ray 500.0 pm
Blue Chandra (ACIS) X-ray 240.0 pm
Blue ROSAT (HRI) X-ray -
Grayscale CTIO Optical (H-alpha) 656.3 nm
Orange VLA Radio 1000.0 mm
Red Chandra (ACIS) X-ray -
Green Chandra (ACIS) X-ray -
Blue Chandra (ACIS) X-ray -
Blue ROSAT (HRI) X-ray -
Grayscale CTIO Optical (H-alpha) -
Orange VLA Radio -
Spectrum_xray2w
Red
Green
Blue
Grayscale
Orange
Chandra_395_1280
×
ID
395
Subject Category
B.4.1.4   B.4.1.4  
Subject Name
G6.4-0.1, W28, G6.4-0.1, W28
Credits
Chandra X-ray: NASA/CXC/HSC/J. K
Release Date
2008-06-02
Lightyears
6,000.0
Redshift
6,000.0
Reference Url
http://chandra.harvard.edu/photo/2008/w28/
Type
Observation
Image Quality
Good
Distance Notes
Facility
Chandra, Chandra, Chandra, ROSAT, CTIO, VLA, Chandra, Chandra, Chandra, ROSAT, CTIO, VLA
Instrument
ACIS, ACIS, ACIS, HRI, -, -, ACIS, ACIS, ACIS, HRI, -, -
Color Assignment
Red, Green, Blue, Blue, Grayscale, Orange, Red, Green, Blue, Blue, Grayscale, Orange
Band
X-ray, X-ray, X-ray, X-ray, Optical, Radio, X-ray, X-ray, X-ray, X-ray, Optical, Radio
Bandpass
-, -, -, -, H-alpha, -, -, -, -, -, H-alpha, -
Central Wavelength
1.13, 0.5, 0.24, -, 656.3, 1000000000
Start Time
Integration Time
Dataset ID
2828, 2828, 2828, -, -, -, 2828, 2828, 2828, -, -, -
Notes
Coordinate Frame
FK5
Equinox
J2000
Reference Value
269.917912733, -23.6935126175
Reference Dimension
3600.0, 3600.0
Reference Pixel
2757.78973389, 2811.70318603
Scale
0.000250161393588, 0.000249829928172
Rotation
179.671478991
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
Chandra X-ray Observatory
URL
http://chandra.harvard.edu
Name
Email
cxcpub@cfa.harvard.edu
Telephone
617.496.7941
Address
60 Garden St.
City
Cambridge
State/Province
MA
Postal Code
02138
Country
USA
Rights
http://chandra.harvard.edu/photo/image_use.html
Publisher
Chandra X-ray Observatory Center
Publisher ID
chandra
Resource ID
w28.tif
Resource URL
http://chandra.harvard.edu/photo/2008/w28/w28.tif
Related Resources
Metadata Date
2012-04-06T12:09:57-04:00
Metadata Version
1.2
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Detailed color mapping information coming soon...

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Universescalefull
6,000 light years

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