3 color image of W28

Minimum credit line: Image courtesy of NRAO/AUI and Brogan et al.(for details, see Image Use Policy).

About this Image

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.

Investigator(s):  Brogan, Gelfand, Gaensler, Kassim, & Lazio

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Technical Data

    Telescope VLA 
    Date of Observation 2004-05-12 
    Type of Observation Continuum Observations 
    Band P 
    Wavelength 90 cm 
    Frequency 330 MHz 
    Center of Image RA: 18:00:30.00, Dec: -23:32:0.00 (J2000)  
    Field of View 2.0000 x 1.6667 degrees  
    Technical Caption 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).  

  • Astronomical database entries for W28
    • Query SIMBAD for more W28 data


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