Starlight polarization and position relative to the Local Bubble surface.  Top row: stars inside the Local Bubble, shown in red.  Vectors mark the orientation of the inferred magnetic field at star positions in 2D Galactic projection (center), with the magnetic field derived for the LB surface shown by the gray vector field.  Points indicate star positions in Cartesian space (right).  A conservative vertical extent of the Galactic Plane is shown by the horizontal black dashed lines, inside of which we expect our assumption that the dominant polarization source along the line of sight is the LB to be less accurate.  A magnified view of one 2D region is shown (left).  Bottom row: As above, but for stars outside the Local Bubble, shown in blue.