Journal of The Korean Astronomical Society (천문학회지)

The Korean Astronomical Society (한국천문학회)
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CO OBSERVATIONS OF A HIGH VELOCITY CLOUD

  • Kim, K.T. (Department of Astronomy, University of Toronto) ;
  • Mihn, Y.C. (Department of Astronomy, University of Massachusetts) ;
  • Hasegawa, T.I. (CITA, University of Toronto)
  • Published : 1989.06.30
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Abstract

We report a null detection of $^{12}CO$ emission from a sub-condensation in a High Velocity Cloud (HVC). As a consequence of this, an upper limit of $n(H_2)\frac{X(CO)}{DV/DR}{\leq}2{\times}10^{-5}$ was set. This implies that $^{12}CO$ abundance is deficient by at least a factor of 10 if the HVC is predominantly molecular, otherwise the CO abundance of the HVC might be normal.

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