The M_BH-M_star relation of obscured AGNs at high redshift

J.E. Sarria, R. Maiolino, F. La Franca, F. Pozzi, F. Fiore, A. Marconi, C. Vignali, A. Comastri

http://arxiv.org/abs/1010.0768

These authors present the first sample of x-ray selected obscured (in the optical) high-z AGN. Using near-infreared spectra obtained with VLT and a SED fitting code, they infer AGN and stellar masses. They discuss their results in the context of the black hole mass - stellar mass relation (Magorrian relation, Magorrian et al. 1998).

From their abstract:
"All of these obscured high-z AGNs are fully consistent with the local M_BH-M_star relation. This result is in contrast with other samples of AGNs in the same redshift range, whose M_BH/M_star ratio departs significantly from the value observed in local galaxies."