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Table 2

Observing log.

Object Aperturea Obs. date Filter Exposure Timeb FWHM S/N Airmass
(FWHM) (UT) (s) (")
J0019+4614 3–4 2012 Oct. 06 J 1 × 9 × 30, 1 × 9 × 50 0.9 2500 1.40–1.33
2–3 2012 Oct. 07 Z 1 × 9 × 120, 1 × 9 × 120 1.0 1750 1.06–1.03
BRI 0021−0214 3–4 2012 Oct. 06 J 1 × 9 × 20, 1 × 9 × 20 0.9 3540 1.60–1.57
LP349−25AB 3–4 2012 Oct. 06 J 2 × 9 × 6, 2 × 9 × 6 0.7 10900 1.04–1.02
3–4 2012 Oct. 07 Z 1 × 9 × 50, 1 × 9 × 50 0.8 7740 1.05–1.03
J0036+1821 3–4 2012 Oct. 06 J 2 × 9 × 35, 2 × 9 × 35 0.7 6580 1.03–1.02
J0045+1634 3–4 2012 Oct. 06 J 1 × 9 × 50, 1 × 9 × 50 1.0 2570 1.02–1.04
J0228+2537 3–4 2012 Oct. 06 J 1 × 9 × 70, 1 × 9 × 70 0.9 1100 1.04–1.02
LP415−20AB 3–4 2012 Oct. 06 J 1 × 9 × 40, 1 × 9 × 60 0.8 2800 1.02–1.04
3–4 2012 Oct. 07 Z 1 × 9 × 120, 1  ×  9  ×  120 0.8 2000 1.04–1.09
J0700+3157AB 3–4 2012 Oct. 06 J 1  ×  9  ×  60, 1  ×  9  ×  60 0.8 3070 1.07–1.04
J0828−1309 2–3 2011 Dec. 31 J 1  ×  9  ×  120, 1  ×  9  ×  80 0.9 4420 1.43–1.56
3–4 2013 Jan. 29 J 1  ×  9  ×  60, 1  ×  9  ×  60 0.8 1820 1.34–1.35
J1159+0057 2–3 2012 Jun. 16 J 1  ×  9  ×  120, 1  ×  9  ×  120 1.5 380 1.33–1.71
1–2 2013 Jan. 29 J 1  ×  9  ×  120, 1  ×  9  ×  120 1.1 425 1.40–1.30
J1254−0122 2.5–3.5 2013 Jan. 29 J 2  ×  9  ×  120, 2  ×  9  ×  120 0.9 470 1.44–1.21
J1411−2119 3–4 2012 Jun. 16 J 2  ×  9  ×  120, 2  ×  9  ×  120 2.5 460 1.85–2.79
J1501+2250 3–4 2013 Jan. 29 J 1  ×  9  ×  60, 1  ×  9  ×  60 0.9 2930 1.35–1.27
J1521+5053 3–4 2013 Jan. 29 J 1  ×  9  ×  60, 1  ×  9  ×  60 0.8 3950 1.31–1.26
J1807+5015 3–4 2012 Jun. 15 J 1  ×  9  ×  120, 1  ×  9  ×  120 1.0 2710 1.14–1.21
2.5–3.5 2012 Oct. 07 Z 1  ×  9  ×  120, 1  ×  9  ×  180 0.8 1500 1.26–1.44
J1835+3259 2–3 2012 Jun. 15 J 1  ×  9  ×  5, 1  ×  9  ×  5 0.8 6100 1.12–1.15
J2036+1051 2–3 2012 Jun. 15 J 1  ×  9  ×  90, 1  ×  9  ×  90 1.0 870 1.06–1.08
2–3 2012 Oct. 07 Z 1  ×  9  ×  180, 1  ×  9  ×  180 1.1 516 1.12–1.28
J2057−0252 3–4 2012 Oct. 06 J 1  ×  9  ×  40, 1  ×  9  ×  30 0.7 2617 1.25–1.21
SA29−130c 3–4 2013 Jan. 29 J 1  ×  9  ×  100, 1  ×  9  ×  100 0.8 1060 1.05–1.04
GJ 3805c 2–3 2012 Jun. 15 J 1  ×  9  ×  100, 1  ×  5  ×  100 1.0 992 1.14–1.13
BD+284211c 3–4 2012 Oct. 06 J 1  ×  9  ×  7, 1  ×  9  ×  7 0.7 4900 1.06–1.05
3–4 2012 Oct. 07 Z 1  ×  9  ×  60, 1  ×  9  ×  60 0.9 8423 1.10–1.05
Feige 110c 2–3 2011 Dec. 31 J 1  ×  9  ×  90, 1  ×  5  ×  90 1.4 1100 1.31–1.41
2–3 2012 Jun. 16 J 1  ×  9  ×  120, 1  ×  5  ×  120 1.7 1240 1.40–1.28
HD 283855d 3–5 2012 Oct. 06 J 2  ×  9  ×  3, 2  ×  9  ×  3 0.7 12600 1.06–1.04
3–4 2012 Oct. 07 Z 2  ×  9  ×  6, 2  ×  9  ×  6 0.7 7400 1.00–1.01
HRW 24d 2–3 2011 Dec. 31 J 1  ×  9  ×  20, 1  ×  9  ×  20 0.9 3414 2.54–2.92
2–3 2013 Jan. 29 J 1  ×  9  ×  10, 1  ×  9  ×  10 0.7 1230 1.36–1.37

Notes.

(a)

Range of circular photometric apertures (in units of FWHM) used to determine the normalized Stokes parameters.

(b)

Number of times the 9-dither pattern is repeated × 9 images × single exposure time, where one column for each telescope rotator angle and retarder plate. With very few exceptions, the exposure times were identical for the two telescope rotator angles and retarder plates.

(c)

Zero-polarized standard star.

(d)

Polarized standard star (Whittet et al. 1992).

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