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Table 4

Summary of observations and derived INOV parameters for HPCDQ sample.

Source Date Tel. Dur. Np σ ψ ΔmCS1,ΔmCS2 FCS1, FCS2 Status † FCS1−CS2 Status Ref.£
dd.mm.yy used (h) (%) (%) (mag, mag) FCS1, FCS2 (CS1-CS2)
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13)
J0238 + 1637 12.11.99 ST 6.6 38 0.42 12.26 0.65, 1.67 29.68, 34.47 V, V 1.28 N (b)
14.11.99 ST 6.2 32 0.24 8.70 2.50, 3.50 5.27, 5.88 V, V 1.61 N (b)
18.11.03 HCT 7.4 39 0.30 7.31 0.50, 0.75 36.21, 36.63 V, V 0.99 N (a)
J0423−0120 19.11.03 HCT 6.3 36 0.18 1.68 –0.10, 0.29 11.05, 14.38 V, V 1.51 N (a)
08.12.04 ST 6.0 11 0.21 1.90 1.82, 2.23 1.84, 2.71 N, N 2.64 N (a)
25.10.09 ST 4.0 18 0.34 2.74 0.93, 1.11 3.87, 5.15 V, V 1.25 N (a)
J0739 + 0137 05.12.05 HCT 5.3 10 0.21 3.75 1.34, 1.80 9.72, 10.32 V, V 0.99 N (a)
06.12.05 HCT 6.0 9 0.44 2.86 1.19, 1.83 9.90, 11.03 V, V 4.47 PV (a)
09.12.05 HCT 5.5 14 0.29 0.88 1.22, 1.40 0.28, 0.41 N, N 1.97 N (a)
J1058 + 0133 25.03.07 ST 5.8 11 0.08 2.08 0.68, 0.86 9.74, 8.64 V, V 0.45 N (a)
16.04.07 ST 3.8 15 0.17 0.52 0.72, 1.62 0.49, 1.12 N, N 0.85 N (a)
23.04.07 ST 4.4 10 0.17 1.59 0.47, 0.63 6.11, 5.56 V, V 0.67 N (a)
J1159 + 2914 31.03.12 ST 5.1 16 0.47 5.96 0.57, 0.71 4.20, 3.51 V, V 0.45 N (a)
01.04.12 ST 7.5 23 0.40 9.73 0.56, 0.69 11.65, 11.45 V, V 0.53 N (a)
02.04.12 ST 6.6 19 2.11 16.35 –0.02, 0.11 17.95, 22.76 V, V 2.56 PV (a)
J1218−0119 11.03.02 ST 8.0 20 0.18 4.58 1.36, 1.44 5.47, 5.91 V, V 0.70 N (b)
13.03.02 ST 8.5 22 0.29 3.10 1.34, 1.42 3.76, 4.83 V, V 2.13 PV (b)
15.03.02 ST 3.9 9 0.13 2.45 1.45, 1.53 6.35, 7.84 V, V 0.56 N (b)
16.03.02 ST 8.2 20 0.22 13.02 1.31, 1.39 154.12, 166.24 V, V 2.26 V (b)
J1256−0547 26.01.06 ST 4.2 19 0.17 2.49 –0.07, –0.44 28.63, 33.73 V, V 1.81 N (a)
28.02.06 ST 6.1 40 0.15 10.26 –0.32, –0.92 619.23, 539.22 V, V 1.33 N (a)
20.04.09 ST 4.9 20 0.23 22.05 1.14, 2.10 172.63, 183.19 V, V 1.27 N (a)
J1310 + 3220 26.04.00 ST 5.6 16 0.34 1.43 0.97, 1.01 0.16, 0.19 N, N 0.19 N (b)
17.03.02 ST 7.7 19 0.35 3.30 0.12, –0.92 13.23, 3.46 V, V 0.39 N (b)
24.04.02 ST 5.8 12 0.14 0.33 –0.48, 0.55 0.14, 0.54 N, N 0.12 N (b)
02.05.02 ST 5.1 13 0.60 1.14 0.49, 0.52 0.43, 0.21 N, N 0.26 N (b)
J1512−0906 14.06.05 ST 4.0 9 0.17 1.55 1.60, 2.17 2.91, 2.73 N, N 1.94 N (a)
01.05.09 ST 5.6 22 0.26 5.33 0.43, 0.46 12.65, 9.89 V, V 0.65 N (a)
20.05.09 ST 4.8 23 0.40 3.00 0.61, 0.63 1.41, 2.11 N, PV 0.61 N (a)

Notes. Columns: (1) source name; (2) epoch of observation; (3) telescope used; (4) duration of monitoring; (5) number of data points in the DLC; (6) rms of the steadiest star-star DLC; (7) INOV amplitude (ψ); (8) mean magnitude difference: Q-CS1 and Q-CS2 for the night; (9) F-values computed for the Q-CS1 and Q-CS2 DLCs; (10) variability status estimation for FCS1,FCS2 values, respectively; (11) F-value for the CS1-CS2 DLC; (12) variability status for the CS1-CS2 DLC; (13) reference for the INOV data (see text for more information Sect. 4.1).

ST – Sampurnanad Telescope (ARIES); HCT – Himalayan Chandra Telescope (IIA). IGO – IUCAA Girawali Observatory.

†

V = Variable; N = Non-variable; PV = Probable Variable.

£

References for the INOV data: (a) present work; (b) Sagar et al. (2004).

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