Table 5
Stellar parameters and velocities of the runaway stars associated with the known bow shock (BS) and bubble (BU) candidates that were not characterized by previous works, and geometrical IR measures in the W4 images for the bow shock and bubble candidates.
Runaway star | ST | Ṁ × 106 | υ∞ | υr | Ref | ![]() |
![]() |
BS/BU | R | l | w | e | ![]() |
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|||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
(M yr−1) | (km s−1) | (km s−1) | (km s−1) | (km s−1) | (″) | (pc) | (″) | (pc) | (″) | (pc) | (cm−2) | (cm−3) | |||||
HD 46 573 | O7V | 0.11 | 2992 | 29.3 | 1 | 40.4 | 40.4 | BS-GR40 | 54 | 0.35 | 369 | 2.40 | 88 | 0.57 | 0.54 | 3.8 | 3.8 |
BD −08 4623 | B0.5:Ia: | 0.50 | 2293 | – | – | 28.8 | – | BS/BU-GR51(*) | 21/– | 0.22/– | 200/– | 2.05/– | 74/74 | 0.76/0.76 | 0.46/– | 71.5 | –/– |
CPD −26 2716 | O6.5Iab | 0.60 | 2909 | 57.8 | 2 | 73.7 | 77.7 | BS-GR70 | 53 | 1.45 | 292 | 7.97 | 54 | 1.47 | 0.51 | 0.4 | 0.3 |
HD 155 775 | O9.7III | 0.07 | 3116 | −9.0 | 1 | 23.8 | 24.4 | BS-GR83 | 15 | 0.07 | 118 | 0.54 | 56 | 0.26 | 0.54 | 202.5 | 192.6 |
Notes. The left side of the table provides information associated with the runaway stars, while the right side provides information associated with the corresponding bow shock and bubble candidates. Spectral types (STs) were taken from the GOSC (Maíz Apellániz et al. 2013) and the BeSS (Neiner et al. 2011) catalogs. Ṁ, mass-loss rates, were linearly interpolated from Vink & Sander (2021). Wind terminal velocities were obtained by applying a linear regression to Vink & Sander (2021) data. Radial velocity references: (1) de Bruijne & Eilers (2012); (2) Williams et al. (2011). are those from Carretero-Castrillo et al. (2023) and
were obtained with the same methodology, using the quoted υr values (see text for details). The right side of the table provides the classification id of the IR structure around the runaway star: BS for bow shocks; BU for bubbles; and BU/BS and BS/BU for intermediate structures between BS and BU. R is the projected standoff distance from the star to the midpoint of the bow shock, l is the length, and w is the width of the bow shock structure. These distances are projected in the plane of the sky. For bubbles, only the width was measured. Column e provides the eccentricity of the ellipse used to measure the bow shocks.
and
are the ISM densities of the medium around the bow shock position considering either
or
as VPEC in Eq. (1). This table is available at the CDS. (*)Previous works classified it as bubble; we classified it as an intermediate structure.
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