Rapid-response mode VLT/UVES spectroscopy of super iron-rich gas exposed to GRB 080310 - Evidence of ionization in action and episodic star formation in the host

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Volume 545 (September 2012)

A&A, 545 (2012) A64

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Table 2

Log of VLT/UVES observations.

Ep.	t _start ^a	Δ t^b	t _exp	Dic.	Setting	Coverage	FWHM^c	Mean	S/N^d
	UT	(min)	(min)	#	λ_c (nm)	λ_obs (nm)	blue/red (″)	airmass	blue/red	blue/red


I	08:51:05	14.55	3	1	346+580	303–388; 476– 684	1.1/1.0	1.12	1.9–2.0/4.0–4.5	48 500/45 600
II	08:56:46	21.23	5	2	437+860	373–499; 660–1060	1.2/0.9	1.12	3.4–4.7/2.7–8.4	47 900/45 300
III	09:04:20	31.25	10	1	346+580	303–388; 476– 684	1.5/1.3	1.14	3.1–3.7/6.8–7.6	48 500/45 600
IV	09:16:36	50.06	23	2	437+860	373–499; 660–1060	1.6/1.2	1.17	6.0–8.7/4.8-14.3	47 900/45 300

Notes.

^(a)

March 10, 2008.

^(b)

Mid-exposure time after the burst event in the observer’s frame.

^(c)

Full width at half maximum of the spatial profile in the two-dimensional spectrum.

^(d)

Signal-to-noise per pixel; min–max ranges over the spectral regions where absorption lines are observed.

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