Journal of The Korean Astronomical Society (천문학회지)

The Korean Astronomical Society (한국천문학회)
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THE ENVIRONMENT OF TYCHO: POSSIBLE INTERACTION WITH A MOLECULAR CLOUD

  • LEE J.-J. (Astronomy program, SEES, Seoul National University) ;
  • KOO B.-C. (Astronomy program, SEES, Seoul National University) ;
  • TATEMATSU K. (National Astronomical Observatory of Japan)
  • Published : 2004.12.01
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Abstract

The Tycho supernova remnant (SNR), as one of the few historical SNRs, has been widely studied in various wavebands and previous observations have shown evidence that Tycho is interacting with a dense ambient medium toward the northeast direction, In this paper, we report our high-resolution (16') $^{12}CO$ observation of the remnant using the Nobeyama 45m radio telescope. The Nobeyama data shows that a large molecular cloud surrounds the SNR along the northeastern boundary. We suggest that the Tycho SNR and the molecular cloud are both located in the Perseus arm and that the dense medium interacting with the SNR is possibly the molecular cloud. We also discuss the possible connection between the molecular cloud and the Balmer-dominated optical filaments, and suggest that the preshock gas may be accelerated within the cosmic ray and/or fast neutral precursor.

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References

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  1. A COSMIC-RAY PRECURSOR MODEL FOR A BALMER-DOMINATED SHOCK IN TYCHO'S SUPERNOVA REMNANT vol.690, pp.2, 2009, https://doi.org/10.1088/0004-637X/690/2/1412
  2. EXPANDING MOLECULAR BUBBLE SURROUNDING TYCO’S SUPERNOVA REMNANT (SN 1572) OBSERVED WITH THE IRAM 30 m TELESCOPE: EVIDENCE FOR A SINGLE-DEGENERATE PROGENITOR vol.826, pp.1, 2016, https://doi.org/10.3847/0004-637X/826/1/34