8.
已知直线\(C\)\({\,\!}_{1}\):\(\begin{cases}x=1+t\cos α, \\ y=t\sin α,\end{cases}(\)\(t\)为参数\()\),圆\(C\)\({\,\!}_{2}\):\(\begin{cases}x=\cos θ, \\ y=\sin θ,\end{cases}(\)\(θ\)为参数\()\),
\((1)\)当\(α\)\(= \dfrac{π}{3}\)时,求\(C\)\({\,\!}_{1}\)与\(C\)\({\,\!}_{2}\)的交点坐标;
\((2)\)过坐标原点\(O\)作\(C\)\({\,\!}_{1}\)的垂线,垂足为\(A\),\(P\)为\(OA\)的中点,当\(α\)变化时,求\(P\)点轨迹的参数方程,并指出它是什么曲线.