Table 1
Summary of the observations of τ Boötis in LOFAR Cycle 13.
| Obs # | LOFAR ID | Date & start time (UTC) | ∆t (h) | Phase |
|---|---|---|---|---|
| 1 | L776013 | 2020-04-11 20:00 | 8 | 0.73–0.83 |
| 2 | L776035 | 2020-04-15 20:00 | 8 | 0.93–0.03 |
| 3 | L779351 | 2020-04-23 19:30 | 8 | 0.34–0.44 |
| 4 | L779361 | 2020-04-24 19:00 | 8 | 0.64–0.74 |
| 5 | L780101 | 2020-04-28 19:00 | 8 | 0.85–0.95 |
| 6 | L780111(a) | 2020-04-29 19:00 | 8 | 0.15–0.25 |
| 7 | L780121 | 2020-05-01 18:30 | 8 | 0.75–0.85 |
| 8 | L780131 | 2020-05-02 18:30 | 8 | 0.05–0.15 |
| B0809+74 [82 min.] | ||||
| 1 | L776009 | 2020-04-11 1949 | 0.17 | – |
| 2 | L776031 | 2020-04-15 1949 | 0.17 | – |
| 3 | L779347 | 2020-04-23 1919 | 0.17 | – |
| 4 | L779357 | 2020-04-24 1849 | 0.17 | – |
| 5 | L780097 | 2020-04-28 1849 | 0.17 | – |
| 6 | L780107 | 2020-04-29 1849 | 0.17 | – |
| 7 | L780117 | 2020-05-01 1819 | 0.17 | – |
| 8 | L780127 | 2020-05-02 1819 | 0.17 | – |
Notes. Column 1: observation number. Column 2: LOFAR observation ID. Column 3: date and start time of the observation (UTC). Column 4: duration (∆t) of the observation. Column 5: τ Boo b orbital phases of the observation relative to periastron and using the ephemeris (period = 3.312463 days, T(0)pеr=2446957.81 JD) from Wang & Ford (2011). (a) For L780111, only the last 3 h of this observation are useful due to strong RFI at the start of the observations.
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