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Table A.1.

Average flux and velocity values for each IUE wavelength band measured for epochs 1983, 1988, 1992, and 1995.

1983
 1988
 1992
 1995
λ0 λ1 − λ2 ID v sd Flux sd v sdv Flux sdf v sdv Flux sdf v sdv Flux sdf
1197.34 1194.5–1199.6 SVe −45 9 2.441 0.048 −39 8 2.503 0.082 −48 12 2.445 0.166 −28 21 2.092 0.356
1197.34 1195.4–1199.6 SVn 38 6 2.119 0.044 42 5 2.179 0.072 40 6 2.101 0.132 55 14 1.818 0.300
1226.01 1217.6–1231.6 1226e(b) −172 12 3.143 0.085 −178 36 3.222 0.136 −331 42 2.583 0.201 −398 46 1.960 0.361
1227.80 1225.6–1230.0 1226n(c) 15 8 1.427 0.033 16 16 1.448 0.103 −66 30 1.043 0.117 −107 23 0.726 0.145
1242.82 1237.0–1248.5 NVe 115 8 10.640 0.158 118 8 11.120 0.302 106 11 10.878 0.545 118 16 10.478 1.040
1258.30 1257.2–1259.6 1258e 34 3 1.293 0.031 33 3 1.286 0.041 32 4 1.208 0.059 33 5 1.133 0.089
1269.73 1267.6–1272.3 1270e(d) 47 6 1.706 0.043 50 8 1.710 0.548 60 11 1.703 0.113 66 13 1.652 0.149
1269.10 1267.6–1271.1 1270n(e) 84 3 1.339 0.035 84 3 1.333 0.038 80 7 1.287 0.064 84 7 1.238 0.097
1371.30 1369.0–1381.0 1371e(a) 898 7 4.508 0.095 911 5 4.547 0.118 869 28 4.695 0.271 867 32 4.685 0.259
1486.50 1478.0–1497.0 NIV] 150 7 7.374 0.097 149 5 7.445 0.122 139 9 7.884 0.226 148 12 8.034 0.245
1550.85 1545.4–1560.5 CIVe 408 8 5.640 0.074 397 15 5.641 0.112 386 11 6.041 0.203 385 9 6.084 0.214
1550.85 1548.2–1554.2 CIVn 136 4 2.922 0.042 133 5 2.969 0.060 128 4 3.115 0.109 133 5 3.169 0.091
1640.42 1630.5–1633.5 HeIIa −1546 7 0.275 0.024 −1548 11 0.264 0.018 −1499 22 0.355 0.091 −1503 30 0.395 0.097
1640.42 1644.4–1655.0 HeIIr(h) 1387 8 7.422 0.169 1391 9 7.325 0.239 1404 9 7.813 0.317 1392 13 7.654 0.345
1640.42 1633.0–1637.3 HeIIb(j) −824 3 2.834 0.101 −822 3 2.920 0.087 −847 20 3.371 0.243 −852 21 3.176 0.243
1640.42 1634.2–1651.8 HeIIe 319 7 20.947 0.314 303 9 21.474 0.467 305 5 22.161 0.437 303 10 22.230 0.530
1718.55 1709.0–1713.0 NIVa −1279 14 0.199 0.013 −1288 17 0.175 0.016 −1255 19 0.238 0.084 −1265 26 0.228 0.085
1718.55 1711.5–1736.0 NIVe 642 6 6.388 0.080 640 6 6.491 0.109 635 9 6.850 0.248 630 10 6.792 0.245
1718.55 1714.0–1728.0 NIVn 328 6 4.974 0.063 330 5 5.113 0.081 338 6 5.351 0.148 344 6 5.361 0.135
1718.55 1715.0–1723.5 NIVnn 123 6 3.575 0.046 122 4 3.696 0.072 115 5 3.819 0.113 125 6 3.863 0.087
1270.00 1250.0–1290.0 FeVIpsudo −153 11 16.200 0.359 −152 19 16.439 0.461 −106 28 16.250 0.941 −83 30 15.980 1.103
1450.00 1430.0–1470.0 FeVpsudo 264 13 8.851 0.178 241 11 8.676 0.256 293 26 9.198 0.541 307 28 9.139 0.552
— 1594.1–1610.0 “cont” — — 2.318 0.042 — — 2.266 0.041 — — 2.440 0.098 — — 2.362 0.107
— 1828.3–1845.5 “cont” — — 1.421 0.026 — — 1.442 0.019 — — 1.600 0.067 — — 1.611 0.067
— 1750.0–1900.0 “cont” — — 13.685 0.212 — — 13.649 0.173 — — 14.999 0.640 — — 14.980 0.647

Notes. The reference wavelength in column 1 is given in Å and corresponds to the laboratory wavelength for the ion listed in column 3 or to the midpoint of the limits of the continuum bands. Average velocities and corresponding standard deviations (sdv) are in units of km s−1. Average integrated fluxes over the wavelength band listed in column 2 and corresponding standard deviations (sdf) are in units of 10−9 erg cm−1 s−1. Fluxes are not corrected for reddening. “cont” indicates possible continuum.

(a)

The contribution of Fe V lines dominates over the O V contribution, as evidenced by the red shift of the centroid.

(b)

FeVI 1222.82, 1223.97

(c)

FeVI 1228.61, 1228.96; in 1995 it is severely affected by NV P Cyg.

(d)

FeV 1269.78, NIV 1270.27, 1272.16, FeVI 1271.10, 1272.07.

(e)

FeV 1269.78, NIV 1270.27, FeVI 1271.10.

(f)

FeV1 pseudo-continuum composed of densely packed Fe VI lines.

(g)

FeV pseudo-continuum composed of densely packed Fe V lines.

(h)

HeIIr is the red wing of the HeII 1640 emission line

(h)

HeIIb is the blue wing of the HeII 1640 emission line.

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