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The spin structure of the matrix element for the reactions $\gamma+ N\to Y_c+{D}^*$, where $Y_c=\Lambda_c^+(2285)$, $\Sigma_c(2455)$ are charmed baryonswith spin 1/2, and $D^*(2010)$ is the vector charmed meson, can beparametrized, in collinear regime, in terms of three independent scalaramplitudes, which are functions of the photon energy $E_{\gamma}$, only. Inframework of an effective Lagrangian approach generalized to charmphotoproduction, we calculate the energy dependence of the differential crosssection, the density matrix element of $\bar{D}^*$, $\rho_{11}$, the asymmetry$A_z$ in the collision of circularly polarized photons with polarized nucleons,and the polarization of the produced $Y_c$-hyperon, $P_z$, in the collision ofcircularly polarized photons with unpolarized target. All these polarizationobservables either vanish or are large, in absolute value, with a smooth$E_{\gamma}$-dependence, and differ for $\Lambda_c^+$ and $\Sigma_c$--production.Comment: 15 pages, 4 figure

Exclusive photoproduction of charmed D * vector mesons, $\gamma + N\rightarrow Y_c + \overline{D^*}$ , $Y_c = \Lambda_c^ + $ or $\Sigma_c$