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      Permanent link:
      https://www.ias.ac.in/article/fulltext/joaa/014/01/0007-0017

    • Keywords

       

      Nova Her 91; infrared spectrophotometry; coronal line emission; shock heating; circumstellar dust

    • Abstract

       

      Near infrared coronal line emission at 1.98 ± 0.02Μm due to [Si VI] detected in the spectrum of Nova Herculis 1991 about 17 days after optical maximum is reported. The early appearance of coronal emission is yet another unusual feature of this fast nova in which early onset of dust formation processes and X-ray detection five days after outburst have already been reported. The coronal line observations reported here are consistent with X-ray detection and support a hot shocked circumstellar envelope at the periphery of the dust formation zone in the nova.

    • Author Affiliations

       

      T. Chandrasekhar1 N. M. Ashok1 Sam Ragland1

      1. Physical Research Laboratory, Navrangpura, Ahmedabad - 380009
    • Dates

       
  • Journal of Astrophysics and Astronomy | News

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