Multiwavelength campaign on Mrk 509 - X. Lower limit on the distance of the absorber from HST COS and STIS spectroscopy

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Volume 544 (August 2012)

A&A, 544 (2012) A33

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Table 8

Density and distance limits from simulations.

Trough	v	log n_e(C iv)	log n_e(N v)	R₉₉^a	R₉₀^b
	(km s^-1)	(cm^-3)	(cm^-3)	(pc)	(pc)


T1	–405	··· ^c	1.1–4.2	60–2100	80–1500
T2	–310	1.1–3.2	< 4.2	160–1830	370–1460
T3	–240	< 3.2	< 3.9	> 130	> 290
T4	–70	< 3.1	< 3.4	> 130	> 290
T5	–15	< 3.6	··· ^d	> 130	> 260
T6	+45	< 2.8	< 3.2	> 150	> 370
T7	+125	< 2.5	··· ^e	> 130	> 290

Notes.

^(a)

Distances determined by requiring > 99% of the lightcurves to overpredict changes in column density.

^(b)

Distances determined by requiring > 90% of the lightcurves to overpredict changes in column density.

^(c)

Since C iv is saturated, we have no information about changes in N(C iv).

^(d)

For T5, the change predicted for the column density of N v is within the error regardless of number density precluding the determination of a useful limit.

^(e)

N v in trough T7 shows change in the red component but not the blue component yielding contradictory results.

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