Notes. Column definitions: d is the distance; N_H and n_H are the total column density and average number density of atomic hydrogen along of sight; n is a directly measured local ISM number density (see below); Ṁ_weak and Ṁ_Vink are the weak-wind values as given in the corresponding references and the mass-loss as predicted by the theoretical recipe described in Vink et al. (2000); r_obs is the observed projected distance where the emission peaks in the WISE 22 μm images (assuming the listed d); r_s,weak, r_s,Vink are the calculated stand-off distance using Ṁ_weak, Ṁ_Vink and v_∞; r_min is the predicted location of the dust wave in the model described in this work. r_min calculated through spectral type, density, velocity, and listed for 3000 Å and 300 Å grains, respectively.

Reference. (1) Martins et al. (2005a); (2) Martins et al. (2012); (3) Boissé et al. (2009); (4) Brown & Bomans (2005); (5) Peri et al. (2012); (6) Gvaramadze et al. (2012b); (7) Gvaramadze et al. (2012a); (8) Marcolino et al. (2009); (9) Najarro et al. (2011). Distances and (average) column densities from Gudennavar et al. (2012) (for HD 216898 d was not listed and is calculated through the measured Hipparcos parallax from van Leeuwen 2007).