Nebular Dead Zone Effects on the D/H ratio in Chondrites and Comets
Comets and chondrites show non-monotonic behavior of their deuterium-to-hydrogen (D/H) ratio as a function of their formation location from the Sun. This is difficult to explain with a classical protoplanetary disk model that has a decreasing temperature structure with radius from the Sun.
Astrophysics and Astronomy
Martin, R. G.,
Nebular Dead Zone Effects on the D/H ratio in Chondrites and Comets.
Astronomy and Astrophysics, 583(A58),