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Table 5.
Final estimated parameters of the SU Cyg system.
| Pulsation | |
|---|---|
| Ppuls (days) | 3.84559 ± 0.00007 |
| T0 (JD) | 2 433 301.777 |
| A1 (km s−1) | −8.99 ± 0.43 |
| B1 (km s−1) | −13.59 ± 0.24 |
| A2 (km s−1) | −4.56 ± 0.21 |
| B2 (km s−1) | −2.86 ± 0.25 |
| A3 (km s−1) | −2.39 ± 0.08 |
| B3 (km s−1) | −0.24 ± 0.24 |
| A4 (km s−1) | −0.81 ± 0.06 |
| B4 (km s−1) | 0.56 ± 0.16 |
| Orbit | |
| Porb (days) | 549.077 ± 0.013 |
| Tp (JD) | 2443765.94 ± 0.63 |
| e | 0.339 ± 0.002 |
| ω (°) | 223.16 ± 0.42 |
| KA (km s−1) | 30.25 ± 0.05 |
| KB (km s−1) | 28.59 ± 0.15 |
| γ (km s−1) | −21.23 ± 0.06 |
| Ω (°) | 266.24 ± 0.24 |
| i (°) | 81.28 ± 0.27 |
| a (mas) | 3.052 ± 0.013 |
| a (au) | 2.827 ± 0.009 |
| d (pc) | 926.3 ± 5.0 |
| ϖ (mas) | 1.080 ± 0.006 |
| q | 1.058 ± 0.015 |
| MA (M⊙) | 4.859 ± 0.058 |
| MB (M⊙) | 5.141 ± 0.041 |
Notes. Index A designates the Cepheid and index B the companion pair. We note that T0 is kept fixed.
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