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Table 5.

Variations in Mrk 509 absorption troughs between 2000 and 2012.

Feature Absorption v1a v2a ⟨TCOS12⟩b c d e
trough (km s−1) (km s−1)
Lyβ T1 −440 −374 0.742 0.033 0.041 0.8
Lyβ T2 −354 −266 0.599 0.011 0.038 0.3
Lyβ T3 −266 −200 0.624 0.032 0.046 0.7
Lyβ T4 −113 −47 0.621 0.126 0.047 2.7
Lyβ T5 −48 18 0.532 0.186 0.053 3.5
Lyβ T6 12 78 0.507 0.243 0.064 3.8
Lyβ T7 74 162 0.544 0.226 0.045 5.0
Lyβ T8 158 202 0.610 0.146 0.049 3.0
Lyβ T9 197 263 0.666 0.018 0.047 0.4
O VI λ1032 T1 −440 −374 0.838 0.003 0.047 0.1
O VI λ1032 T2 −354 −266 0.610 0.009 0.044 0.2
O VI λ1032 T3 −266 −200 0.509 −0.104 0.052 −2.0
O VI λ1032 T4 −113 −47 0.454 −0.123 0.048 −2.6
O VI λ1032 T5 −48 18 0.375 −0.075 0.052 −1.4
O VI λ1032 T6 12 78 0.291 −0.157 0.064 −2.5
O VI λ1032 T7 74 162 0.330 −0.050 0.058 −0.9
O VI λ1032 T8 158 202 0.366 −0.170 0.079 −2.2
O VI λ1032 T9 197 263 0.457 −0.209 0.049 −4.3
O VI λ1038 T1 −440 −374 0.851 0.022 0.031 0.7
O VI λ1038 T2 −354 −266 0.610 −0.101 0.036 −2.8
O VI λ1038 T3 −266 −200 0.569 −0.192 0.043 −4.5
O VI λ1038 T4 −113 −47 0.552 −0.132 0.044 −3.0
O VI λ1038 T5 −48 18 0.498 0.033 0.047 0.7
O VI λ1038 T6 12 78 0.407 0.034 0.061 0.5
O VI λ1038 T7 74 162 0.350 −0.119 0.054 −2.2
O VI λ1038 T8 158 202 0.414 −0.129 0.054 −2.4
O VI λ1038 T9 197 263 0.478 −0.211 0.046 −4.5

Notes.

(a)

Velocities are relative to a systemic redshift of z = 0.034397 (Fisher et al. 1995).

(b)

Mean transmission in the given absorption trough in the COS 2012 spectrum.

(c)

Mean fractional difference between COS 2012 and FUSE 2000 troughs normalized by the mean transmission for COS 2012.

(d)

Mean fractional error in the difference between the COS 2012 and FUSE 2000 troughs normalized by the mean transmission for COS 2012.

(e)

Mean fractional difference between the COS 2012 and FUSE 2000 troughs normalized by the error.

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