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Home All issues Volume 544 (August 2012) A&A, 544 (2012) A33 Full HTML
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Table 1

Variability in Mrk 509 absorption troughs.

Feature Trough v1 v2 ⟨TC⟩a ⟨TC − TS⟩/⟨TC⟩b ⟨σ⟩/⟨TC⟩c ⟨TC − TS⟩/⟨σ⟩d
N vλ 1238 T1 –425 –385 0.605 –0.182 0.039 –4.7
N vλ 1238 T2 –350 –270 0.425 0.004 0.035 0.1
N vλ 1238 T3 –265 –210 0.669 0.030 0.031 1.0
N vλ 1238 T4 –90.0 –45.0 0.530 –0.044 0.042 –1.1
N vλ 1238 T5 –40.0 15.0 0.249 –0.092 0.065 –1.4
N vλ 1238 T6 20.0 70.0 0.664 –0.023 0.030 –0.8
N vλ 1238 T7 95.0 155 0.647 –0.005 0.028 –0.2
N vλ 1238 T8 165 200 0.825 0.020 0.030 0.6
N vλ 1238 T9 205 250 0.831 –0.079 0.027 –3.0
N vλ 1242 T1 –425 –385 0.715 –0.092 0.030 –3.0
N vλ 1242 T2 –350 –270 0.590 0.013 0.023 0.5
N vλ 1242 T3 –265 –210 0.774 0.008 0.024 0.3
N vλ 1242 T4 –90.0 –45.0 0.688 –0.052 0.027 –1.9
N vλ 1242 T5 –40.0 15.0 0.376 –0.096 0.039 –2.4
N vλ 1242 T6 20.0 70.0 0.798 –0.034 0.024 –1.4
N vλ 1242 T7 95.0 155 0.774 –0.049 0.023 –2.2
N vλ 1242 T8 165 200 0.901 –0.027 0.026 –1.0
N vλ 1242 T9 205 250 0.916 0.003 0.022 0.1
Si ivλ 1393 T5 –45.0 15.0 0.937 0.006 0.023 0.3
Si ivλ 1402 T5 –45.0 15.0 0.987 0.060 0.021 2.9
C ivλ 1548 T1 –425 –395 0.643 0.060 0.034 1.8
C ivλ 1548 T2 –350 –270 0.294 0.190 0.035 5.5
C ivλ 1548 T3 –265 –200 0.613 0.010 0.023 4.3
C ivλ 1548 T4 –90.0 –45.0 0.475 0.101 0.030 3.4
C ivλ 1548 T5 –40.0 15.0 0.261 0.120 0.041 2.9
C ivλ 1548 T6 20.0 70.0 0.694 –0.007 0.024 –0.3
C ivλ 1548 T7 95.0 155 0.601 0.017 0.023 0.8
C ivλ 1548 T8 165 200 0.246 0.118 0.047 2.5
C ivλ 1548 T9 205 250 0.486 0.009 0.029 0.3
C ivλ 1550 T1 –425 –395 0.562 –0.010 0.033 –0.3
C ivλ 1550 T2 –350 –270 0.404 0.070 0.024 2.9
C ivλ 1550 T3 –265 –200 0.749 0.026 0.019 1.4
C ivλ 1550 T4 –90.0 –45.0 0.663 0.024 0.023 1.1
C ivλ 1550 T5 –40.0 15.0 0.368 0.036 0.031 1.2
C ivλ 1550 T6 20.0 70.0 0.829 –0.021 0.020 –1.1
C ivλ 1550 T7 95.0 155 0.881 0.004 0.018 0.2
C ivλ 1550 T8 165 200 0.971 –0.090 0.023 –3.9
C ivλ 1550 T9 205 250 0.978 –0.029 0.020 –1.4

Notes. 

(a)

Mean transmission in the COS spectrum.

(b)

mean fractional difference between COS and STIS troughs normalized by the mean COS transmission.

(c)

mean fractional error in the difference between COS and STIS troughs normalized by the mean COS transmission.

(d)

mean fractional difference between COS and STIS troughs normalized by the error.

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