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      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/007/02/0105-0112

    • Keywords

       

      supernova remnants; HII regions; interstellar medium

    • Abstract

       

      A radio continuum map of a 1°5 X 1°5 region in the galactic plane nearl = 54° is presented at 49 cm with a resolution of 100 arcsec X 200 arcsec. The shell source G 54.4 - 0.3 has the characteristics of a supernova remnant while the second large ring structure G 53.9 + 0.3 is a Hn ring consisting of W 52 and several small-diameter thermal sources. One of the twelve small-diameter sources (G 54.73 + 0.61) has a spectral index⇏ -1.6.

    • Author Affiliations

       

      T. Velusamy1 W. M. Goss2 E. M. Arnal3

      1. Radio Astronomy Centre, Tata Institute of Fundamental Research, POBox 8, Udhagamandalam - 643001
      2. Kapteyn Astronomical Institute, Postbus 800, Groningen, AV - 9700, The Netherlands
      3. Instituto Argentino de Radioastronomia, C C No. 5, Villa Elisa - 1894, Argentina
    • Dates

       
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