SIMBAD references

We report upper limits on the masses of black holes that can be present in the centers of 16 nearby galaxy bulges. These limits M^lim_BH for our statistically complete sample were derived from the modeling of the central emission-line widths ([N II] or [S II]), observed over a 0".25x0".2 (R≲9 pc) aperture. The experiment has a mean detection sensitivity of ∼3.9x10⁶ M_☉. For three sample members with direct determinations of M_BH our upper limits agree within the uncertainties, while in general our upper limits are found to be close to the masses measured in other bulges with global properties similar to ours. Remarkably, our limits are quite close to the recently derived M_BH-σ_* relation. These results support a picture wherein the black hole mass and overall galaxy structure are closely linked, as galaxies with exceptionally high M_BH at a given σ_* apparently are rare.