Multiwavelength campaign on Mrk 509 - II. Analysis of high-quality Reflection Grating Spectrometer spectra

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Volume 534 (October 2011)

A&A, 534 (2011) A37

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Table 11

Overview of wavelength scale indicators.

Indicator		Δλ ≡ λ_obs − λ_pred
		(mÅ)

1. Lines from the outflow of Mrk 509		−5.3 ± 3.6
2. Lines from foreground neutral gas^a		+10.3 ± 4.0
2. Lines from foreground neutral gas^b		+6.5 ± 3.4
3. Lines from foreground hot gas absorption^c		+2.8 ± 4.9
3. Lines from foreground hot gas absorption^d		−1.9 ± 4.9
4. Comparison with a sample of RGS spectra of stars		−2.8 ± 4.5
5. Comparison with Chandra LETGS spectra		−7.3 ± 3.8

All indicators combined^a,c		−1.0 ± 1.8
All indicators combined^b,c		−1.2 ± 1.8
All indicators combined^a,d		−1.6 ± 1.8
All indicators combined^b,d		−1.8 ± 1.8

Notes.

^(a)

As described in Sect. 6.4.2.

^(b)

Ignoring the blending by Ca xv of the O i line.

^(c)

Using the O vi centroid velocity.

^(d)

Using the velocity of dominant component 4 in O vi.

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