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Table 1

Observations log of the RR Lyr spectra around the maximum luminosity.

Night Obs. N Texp Ψ φemi S/N Vshock I(%) I(%)
(yyyy-mm-dd) (s) Blazhko pulsation (km s−1) Hα HeI D3
1994-08-03 OHP 26 450–480 (480) 0.44 0.956 55 111 20 4
1994-08-04 OHP 35 420–600 (480) 0.47 0.931 36 – [18] [0]
1995-08-07 OHP 18 300–480 (360) 0.86 0.890 22 131 – 0
1995-08-08 OHP 32 300–540 (540) 0.89 0.877 37 – 4 0
1995-09-05 OHP 48 180–600 (360) 1.60 0.915 27 – 7 6
1995-10-17 OHP 38 300 2.67 0.890 32 128 22 0
1996-06-24 OHP 30 300–500 (500) 0.12 0.882 34 122 27 (2)
1996-06-25 OHP 34 240–540 (420) 0.15 0.873 48 119 18 0
1996-08-01 OHP 56 180–360 (300) 1.10 0.876 31 143 33 3
1996-08-02 OHP 20 420–600 (600) 1.12 0.870 24 131 28 3
1996-08-11 OHP 36 420–600 (480) 1.36 0.907 33 120 29 5
1997-05-30 OHP 28 300–600 (420) 0.95 0.877 11 135 – 0
1997-06-11 OHP 38 180–300 (180) 1.26 0.887 24 129 33 1
1997-08-05 OHP 37 300–480 (300) 2.66 0.896 39 139 40 8
1997-08-06 OHP 58 300 2.69 0.898 29 134 40 8
1997-08-09 OHP 48 300–480 (300) 2.76 0.883 26 149 25 4
1997-08-10 OHP 38 300–600 (300) 2.79 0.885 15 146 24 0
1997-08-30 OHP 65 300 3.30 0.884 36 124 21 5
1997-08-31 OHP 60 180–300 (240) 3.33 0.881 29 121 27 0
2013-10-12 Ouka 40 300 0.16 0.922 13 117 43 7
2015-10-29 Ouka 58 300 0.33 0.921 19 – 34 3
2015-11-06 Ouka 23 300 0.53 0.917 26 119 31 3
2015-11-10 Ouka 43 300 0.63 0.919 17 – 32 7
2015-11-11 Ouka 32 300 0.66 0.915 5 – 27 3
2015-11-14 Ouka 48 300 0.74 0.920 6 – 44 (2)
2015-11-19 Ou8a 49 300 0.86 0.922 9 – 44 5
2015-11-27 Ouka 40 300 1.07 0.919 6 – 38 0
2015-12-01 Ouka 39 300 1.17 0.920 8 – 41 (3)
2015-12-14 Ouka 23 300 1.50 0.921 5 – 34 (2)
2015-12-18 Ouka 22 300 1.61 0.920 11 126 37 (3)

Notes. When the quality of the data allowed to determine the shock velocity, the nights are marked in bold. Columns provide the date of the night, the observatory (Obs.), the number, N, of observed spectra, the exposure time, Texp, or the range of exposure time used during the night. The value in parenthesis is the exposure time corresponding to the spectrum of the maximum of Hα. Then, the corresponding Blazhko phase, Ψ, of the night, the pulsation phase φemi of the maximum of the emission of Hα called “the first apparition”, the estimated S/N per pixel with 2σ around 6557 Å over 2.5 Å, the maximum shock velocity (km s−1) near φ ≃ 0.9 and the maximum intensity of the Hα and He I D3 emission components with respect to the continuum. When the intensity number is in parenthesis, it means that the presence of the emission is doubtful in terms of the noise level or continuum; when it is equal to zero, no emission was observed. When I is in square brackets, it means that the spectrum on which their measurements are made is either the first or the last of the night and therefore may not match at the maximum value.

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