SIMBAD references

We study the correlation of the velocity dispersion of the coexisting molecules H¹³CN and H¹³CO⁺ and the turbulent energy dissipation scale in the DR21(OH) star-forming region. The downshift of the H¹³CO⁺ spectrum relative to H¹³CN is consistent with the presence of ambipolar diffusion at dissipation length scales that helps the process of turbulent energy dissipation, but at a different cutoff for ions compared with the neutrals. We use our observational data to calculate a turbulent ambipolar diffusion length scale L' =~ 17 mpc and a strength of B_pos=~ 1.7 mG for the plane of the sky component of the magnetic field in DR21(OH).