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Table 1
Binary post-AGB stars observed in this paper.
| Source | Observed coordinates | VLSR | d | Porb | Sp. type | Comments | ||
|---|---|---|---|---|---|---|---|---|
| GCVS name | IRAS name | J2000 | [km s−1] | [pc] | [d] | |||
| AC Herculis | 18 281+2149 | 18:30:16.24 | +21:52:00.6 | −9.7 | 1100 | 1188.9 | F2 − K4 I | RV Tauri variable |
| 89 Herculis | 17 534+2603 | 17:55:25.19 | +26:03:00.0 | −8.0 | 1000 | 289.1 | F2 I | Semiregular variable |
| – | 19 125+0343 | 19:15:01.18 | +03:48:42.7 | 82.0 | 1500 | 519.7 | F2 | RV Tauri variable |
| R Scuti | 18 448−0545 | 18:47:28.95 | −05:42:18.5 | 56.1 | 1000 | − | G0 − K0 I | Peculiar RV Tauri variable |
Notes. Distances and spectral types are adopted from Bujarrabal et al. (2013a). Velocities are derived from our observations. Orbital periods of the binary systems are taken from Oomen et al. (2018).
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