Detection of TiH$_2$ molecule in the interstellar medium is less probable
英文摘要：
Identification of TiH$^1$ and TiO$^2$ has been historical, as the Titanium was first time discovered in the interstellar medium (ISM). After finding TiO$_2$$^3$, there is an obvious question about the search of titanium dihydride (TiH$_2$). The existence of TiH$_2$ in the ISM is quite probable, as the atomic abundance of hydrogen is about 1900 times larger than that of oxygen. We have discussed that the detection of TiH$_2$ in the ISM is less probable, though it has a large electric dipole moment.
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