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Table B.3

The whole Galactic sample of nascent short-period (P < 10 d) binaries with early-type primaries and extreme mass ratios (sp. type ≤B3 and q < 0.2, see text for details).

Name Sp. Type P (d) q e v sin(i) (km s−1) Age (Myr) Ref
LS I+61 145 B1V 1.85 0.06 0 110* 4.9 a
HD 25631 B3V 5.24 0.13 0 221 9.6 b
TYC 1881-933-1 B2V 1.02 0.11 0 143* 29.3 a
HD 254346 B1.5V 5.43 0.06 0.015 201 11.6 a
HD 46485 O7V 6.94 0.04 0.03 334 2.5 b
TYC 741-1565-1 B2V 2.26 0.03 0 149 3.9 a
HD 62747 B1.5III 3.93 0.14 0 100* 16.2 c,d
HD 309317 B2V 2.26 0.08 0 203 11.8 a
HD 120307 B2IV 2.63 0.12 0 65* 11.1 e
HD 138690A B2IV 2.85 0.17 0 236 16.7 e
HD 145482 B2.5V 5.77 0.15 0.19 170 8.0 c,d,f,g
HD 149834 B2V 4.60 0.09 0.04 216 5.9 h
HD 152200 B0V 4.44 0.04 240 4.3 i
V1208Sco B0.5V 5.22 0.17 0 87 0.6 a
HD 154407C B1V 2.56 0.04 0 145 4.8 a
HD 158926A B1.5IV 5.95 0.17 0.26 125 11 j
HD 350685 B1.5V 2.87 0.11 0 248 6.2 a
HD 191495 B0V 3.64 0.10 0 201 7.6 b
HD 163892 O9.5IV 7.84 0.18 0.04 212 k
HD 165246 O8V 4.59 0.16 0.03 253 3.3 l
HD 210478 B1V 3.81 0.15 0 120* 10 m

Notes. References: (a) this work, (b) Nazé et al. (2023), (c) Pigulski (2024), (d) Simón-Díaz et al. (2017), (e) Jerzykiewicz et al. (2021), (f) Levato et al. (1987), (g) Gullikson et al. (2016), (h) Stassun et al. (2021), (i) Banyard et al. (2023) - the quoted age is the cluster age, (j) Tango et al. (2006) and references therein, (k) Mahy et al. (2022), (l) Johnston et al. (2021), and (m) Çakirli et al. (2014). Asterisks* in the sixth column indicate the synchronized systems. The last three objects may be ZAMS systems rather than nascent ones (see text for details).

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