3 color image of W28
Description
This is a 3-color image of the region surrounding the W28 supernova remnant (SNR) that is located in our Galaxy. In this image blue=Very Large Array (VLA) 90cm, red=MSX 8 microns, and green=Southern Galactic Plane Survey + VLA 20cm data. This image was created to look for new supernova remnants through their non-thermal (synchrotron) radio emission. Non-thermal sources in these images are primarily blue in color, while massive star forming regions composed of thermal ionized hydrogen gas are white to cyan; warm thermal dust emission is red. Including W28, two SNRs were previously known in this field of view, six new SNRs were discovered from this image.
The VLA 90cm data is composed of B, C, and D configuration data and has a resolution of 42" (Brogan et al. 2006). The combined Southern Galactic Plane Survey (McClure-Griffiths et al. 2005) and VLA (Helfand et al. 2005) 20cm data has a resolution of 70" x 37". The MSX 8 micron data has a resolution of 20" (Price et al. 2001).
Creator
Legacy Astronomical Images
Rights
NRAO/AUI/NSF does not hold full copyright for this image. Contact the archivist for details.
Type
Legacy Astronomical Image
Object Name
W28
Photo Credit
Brogan et al.
Investigators
Brogan, Gelfand, Gaensler, Kassim, Lazio
Telescope
Very Large Array (VLA)
Observation Date
2004-05-12
Type of Observation
continuum
Band
P
Wavelength
90 cm
Frequency
330 MHz
Center of Image
RA 18:0:30.000, Dec: -23:32:0.000 (J2000)
Field of View
2.000000 x 1.666667 degrees
Link to journal article
Notes
Contact the archivist for a high resolution tif of this image.
Series
Galactic Sources Series
Unit
Supernova Remnants Unit
Citation
Legacy Astronomical Images, “3 color image of W28,” NRAO/AUI Archives, accessed November 13, 2024, https://www.nrao.edu/archives/items/show/33517.