Table D.1.
Historical observation details for the field of view that contains Ross 867-8.
| Date observation | Telescope | Frequency | Bandwidth | Correlations | Time | Sensitivity (1) | Sν(2) | Resolution (3) |
|---|---|---|---|---|---|---|---|---|
| (YYYY-MM-DD) | (MHz) | (MHz) | parameters | (min) | (μ Jy) | (mJy) | ||
| 1984-06-29 | VLA | 4860 | 100 | RR,LL,RL,LR | 141 | 81 | ND (4) | 11.7″ × 4.7″ (−89°) |
| 1986-02-10 | VLA | 1540 | 50 | RR,LL,RL,LR | 50 | 250 | NA (5) | NA (5) |
| 1986-07-10 | VLA | 1465 | 50 | RR,LL,RL,LR | 27 | NA (5) | NA (5) | NA(5) |
| 1986-08-06 | VLA | 1464 | 50 | RR,LL,RL,LR | 24 | NA (5) | NA (5) | NA(5) |
| 4760 | 50 | RR,LL,RL,LR | 15 | NA(5) | NA (5) | NA (5) | ||
| 1990-08-27 | VLA | 1565 | 100 | RR,LL,RL,LR | 67 | 320 | ND (4) | 4.2″ × 4.0″ (−65°) |
| 4785 | 100 | RR,LL,RL,LR | 64 | 38 | 0.20 ± 0.04 | 1.32″ × 1.20″ (−45°) | ||
| 8515 | 100 | RR,LL,RL,LR | 64 | 42 | ND (4) | 0.69″ × 0.68″ (−27°) | ||
| 2007-03-08 | GMRT | 325 | 32 | RR,LL | 280 | 356 | 5.3 ± 0.8 | 9.7″ × 8.4″ (−53°) |
| LL | 224 | 11.6 ± 1.2 | 10.3″ × 8.4″ (−36°) | |||||
| RR | 248 | 3.5 ± 0.6 | 8.9″ × 8.6″ (−23°) | |||||
| 2007-03-10 | GMRT | 610 | 32 | RR,LL | 310 | 52 | 1.7 ± 0.2 | 4.5″ × 3.9″ (37°) |
| LL | 82 | 2.4 ± 0.3 | 4.6″ × 4.0″ (41°) | |||||
| RR | 94 | 0.9 ± 0.2 | 4.5″ × 4.2″ (13°) | |||||
| 2011-07-24 | GMRT | 235 | 17 | LL | 346 | 350 | 6.8 ± 0.6 | 12.4″ × 10.7″ (59°) |
| 610 | 33 | RR | 40 | 7.8 ± 0.8 | 5.0″4.1 × ″ (77°) | |||
| 2015-03-22 | JVLA | 1519 | 64 | RR,LL,RL,LR | 40 | 15 | 0.38 ± 0.02 | 1.32″ × 1.20″ (−42°) |
| 2017-01-25 | LOFAR | 145 | 48 | XX,YY,XY,YX | 8 | 200 | ND (4) | 8.78″ × 6.43″ (62°) |
| 2017-10-02 | JVLA | 2988 | 150 | RR,LL,RL,LR | 0.83 | 124 | ND (4) | 2.56″ × 2.14″ (52°) |
Notes.
Flux density detected for Ross 867. Where all correlation parameters were available, the value reported corresponds to Stokes I.
Not available. Some observations made in 1986 with the VLA did not have a flux calibrator, and were not well centered on the target. Hence, any flux measurement is hard to interpret. We relied on what Jackson et al. (1987) and White et al. (1989) reported for these observations (see Sect. 4.3).
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