Comparison Stars Used for V-band Differential Photometry

Explanation of the Columns for the Table of Comparison Stars

Object Comp Star V σ(V) Reference
(1) (2) (3) (4) (5)
3C 66A A 13.65 0.02 Smith & Balonek (1998)





AO 0235+164 4 13.04 0.01 Gonzalez-Perez, et al. (2001)

8 15.03 0.01 Gonzalez-Perez, et al. (2001)

2 12.72 0.01 Gonzalez-Perez, et al. (2001)





PKS 0528+134 12 16.23 0.01 Gonzalez-Perez, et al. (2001)

15 15.79 0.01 Gonzalez-Perez, et al. (2001)

25 13.26 0.01 Gonzalez-Perez, et al. (2001)





S5 0716+714 10 11.46 0.01 Villata, et al. (1998)

11 13.55 0.02 Villata, et al. (1998)





OJ 248 2 14.71 0.02 Raiteri, et al. (1998)

5 15.76 0.03 Raiteri, et al. (1998)





OJ 287 4 14.19 0.01 Gonzalez-Perez, et al. (2001)

1 13.99 0.01 Gonzalez-Perez, et al. (2001)





Mrk 421 1 14.36 0.02 Villata, et al. (1998)

2 15.57 0.05 Villata, et al. (1998)

3 15.77 0.03 Villata, et al. (1998)





H 1219+305 A 12.47 0.01 Smith, et al. (1991)

B 14.01 0.01 Smith, et al. (1991)





W Com A 12.08 0.04 Fiorucci & Tosti (1996)

D 14.81 0.04 Fiorucci & Tosti (1996)





PKS 1222+216 1 14.19 0.04 Raiteri, et al. (1998)





3C 273 C 11.87 0.04 Smith et al. (1985)

D 12.68 0.04 Smith et al. (1985)





3C 279 1 12.40 0.01 Gonzalez-Perez, et al. (2001)

2 12.99 0.03 Smith & Balonek (1998)

5 15.95 0.01 Gonzalez-Perez, et al. (2001)





H 1426+428 A 14.16 0.01 Smith, et al. (1991)

B 14.61 0.01 Smith, et al. (1991)





PKS 1510-08 1 11.60 0.03 Smith & Balonek (1998)

4 14.66 0.01 Gonzalez-Perez, et al. (2001)





3C 345 A 13.86 0.05 Smith et al. (1985)

D 15.25 0.01 Gonzalez-Perez, et al. (2001); Star 4

E 15.23 0.01 Gonzalez-Perez, et al. (2001); Star 19





Mrk 501 A 12.61 0.01 Smith, et al. (1991)





1ES 1959+650 2 12.86 0.02 Villata, et al. (1998)





PKS 2155-304 2 12.04 0.01 Smith, et al. (1991)

3 12.97 0.01 Smith, et al. (1991)





BL Lac B 12.94 0.01 Gonzalez-Perez, et al. (2001)

C 14.28 0.01 Gonzalez-Perez, et al. (2001)





3C 454.3 3 14.40 0.01 Gonzalez-Perez, et al. (2001)

4 13.83 0.03 Smith & Balonek (1998)

8 13.62 0.03 Smith & Balonek (1998)

Explanation of the Columns for the Table of Comparison Stars