Table 4
Summary of the non-photospheric absorption features of the observed cold gas-bearing debris disc stars.
| Stars with non-photospheric absorptions | |||||||
|---|---|---|---|---|---|---|---|
| Ca II | Na I | Angle (deg.) (c) | |||||
| Star | Vstar | VISM | Neither | VCaII | Vstar | VISM | |
| HD 9672 (a) | Y | Y | Y | Y | 70–90 (1,2,3) | ||
| HD 32297 (a) | Y | Y | Y | Y | 80–88 (4,5) | ||
| HD 110058 (a) | Y | Y | Y | Y | ~90 (6) | ||
| HD 131488 (a) | Y | Y | Y | Y | 82 (7) | ||
| HD 131835 (a) | Y | Y | Y | 75–83 (8,9,14) | |||
| HD 138813 | Y | Y | Y (b) | Y | 32 (10) | ||
| HD 146897 | Y | Y | Y | Y | 84 (11) | ||
| HD 156623 (a) | Y | Y (b) | 34 (10) | ||||
| HD 172555 (a) | Y | Y | 75 (12) | ||||
| HD 181296 | Y | Y | >70 (13) | ||||
Notes. Columns 2–4: coincidences of the Ca II velocity components with the radial velocity of the star, Colorado model ISM clouds along the line of sight, or none of both. Columns 5–7: coincidences of the Na I velocity components with Ca II features, the radial velocity of the star, or the ISM. Column 8 gives the inclination angle of the debris disc associated with the stars. Empty spaces mean non-detections. (a) Stars with FEBs or red wings. (b)Features in emission.
References. (c)References for inclination angle: (1) Hughes et al. (2008); (2) Moór et al. (2015b); (3) Choquet et al. (2017); (4) Schneider et al. (2005); (5) Asensio-Torres et al. (2016); (6) Kasper et al. (2015); (7) Moór et al. (2017); (8) Hung et al. (2015); (9) Moór et al. (2015a); (10) Hales et al. (in prep.); (11) Thalmann et al. (2013); (12) Smith et al. (2012); (13) Smith et al. (2009); (14) Feldt et al. (2017).
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