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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.

(1)

Sensitivity at the image center.

(2)

Flux density detected for Ross 867. Where all correlation parameters were available, the value reported corresponds to Stokes I.

(3)

Restoring beam major × minor axis (position angle).

(4)

No detection.

(5)

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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