Multi-site, multi-year monitoring of the oscillating Algol-type eclipsing binary CT Herculis

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Table 2

Coordinates and standard system calibrated magnitudes with their errors for the target and comparison stars.

Ident	GSC	RA	Dec	B	V	R	B − V	V − R

CT Her	GSC01509-1142	16 20 26.57	+18 27 16.9	11.33 ± 0.03	11.12 ± 0.03	11.00 ± 0.03	0.21 ± 0.04	0.12 ± 0.04
C1^a	GSC01509-1140	16 20 33.89	+18 27 18.5	12.06 ± 0.03	10.80 ± 0.03	10.11 ± 0.03	1.26 ± 0.04	0.69 ± 0.04
C2’^b	GSC01509-1130	16 20 18.61	+18 27 32.6	13.41 ± 0.03	12.40 ± 0.03	11.88 ± 0.03	1.01 ± 0.04	0.52 ± 0.04
C3	GSC01509-0901	16 20 43.00	+18 30 53.2	13.18 ± 0.03	12.67 ± 0.03	12.38 ± 0.03	0.51 ± 0.04	0.29 ± 0.04

Notes.

^(a)

C1 was also used by Kim et al. (2004a).

^(b)

C2′ is not the same star as C2 (Kim et al. 2004a).

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