Physical conditions in high-redshift GRB-DLA absorbers observed with VLT/UVES: implications for molecular hydrogen searches

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Volume 506 / No 2 (November I 2009)

A&A, 506 2 (2009) 661-675

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This article has an erratum: [https://doi.org/10.1051/0004-6361/20066780e]

Table 2:

Column densities of the fine-structure levels of the ground term and those of metastable levels of Fe⁺ at the GRB 050730-DLA redshift of $z_{\rm abs}=3.96857$ .
Ion	Energy level	Transition	${\log N\pm\sigma _{\log N}}^{b}$
		lines used (Å)
1st epoch of observations:
Fe⁺	g.s.^a ( $^6{\rm D}_{9/2}$ )	1083, 1112	$\rm 15.31^{+0.04}_{-0.05}$
Fe⁺	$^6{\rm D}_{7/2}$	1266, 1267	$\rm 14.39^{+0.10}_{-0.12}$
Fe⁺	$^6{\rm D}_{5/2}$	1271	$\rm 14.36^{+0.09}_{-0.10}$
Fe⁺	$^6{\rm D}_{3/2}$	1275.7, 1275.8	$\rm 14.04^{+0.12}_{-0.16}$
Fe⁺	$^6{\rm D}_{1/2}$	1277.64, 1277.68	<13.60^c
2nd epoch of observations:
Fe⁺	g.s.^a ( $^6{\rm D}_{9/2}$ )	1611	$\rm 15.34^{+0.06}_{-0.06}$
Fe⁺	$^6{\rm D}_{7/2}$	1618, 1621	$\rm 14.41^{+0.03}_{-0.03}$
Fe⁺	$^6{\rm D}_{5/2}$	1629, 1631	$\rm 13.96^{+0.06}_{-0.07}$
Fe⁺	$^6{\rm D}_{3/2}$	1634, 1636	$\rm 13.79^{+0.09}_{-0.09}$
Fe⁺	$^6{\rm D}_{1/2}$	1639	<13.65^d
Fe⁺	$^4{\rm F}_{9/2}$	1559, 1566, 1569
		1610, 1612, 1658
		1702	$\rm 14.31^{+0.03}_{-0.04}$
Fe⁺	$^4{\rm F}_{7/2}$	1563, 1625, 1659
		1712	$\rm 13.64^{+0.10}_{-0.10}$
Fe⁺	$^4{\rm F}_{5/2}$	1570, 1584, 1633	$\rm 13.50^{+0.11}_{-0.14}$
Fe⁺	$^4{\rm F}_{3/2}$	1574, 1640	${\le} 13.39^{+0.11d}_{-0.12}$
Fe⁺	$^4{\rm D}_{7/2}$	1635	$\rm 13.46^{+0.08}_{-0.08}$
Fe⁺	$^4{\rm D}_{5/2}$	1641	${\le} 13.29^{+0.13d}_{-0.15}$

^a Ground state. ^b Listed uncertainties were derived from the line fitting using the best-fit continuum normalisation plus or minus 0.5 times the noise rms in the adjacent continuum. ^c $3\sigma$ upper limit. ^d Possible blend or mis-identification (see text).

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