Steep extinction towards GRB 140506A reconciled from host galaxy observations: Evidence that steep reddening laws are local

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Volume 601 (May 2017)

A&A, 601 (2017) A83

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Table 1

Photometry of the host galaxy from FORS2 and Spitzer/IRAC imaging.

Date (Δt)^a	Filter	Eff. wavelength	Exp. time	Avg. airmass	Seeing^b	Mag_AB^c

2015-04-29 (357.48 d)	u _HIGH	3610 Å	3 × 500 s	1.166		25.60 ± 0.30
2015-04-29 (357.50 d)	g _HIGH	4700 Å	3 × 300 s	1.171		25.47 ± 0.21
2015-06-16 (405.24 d)	R _SPECIAL	6550 Å	5 × 200 s	1.323		25.16 ± 0.19
2015-06-16 (405.26 d)	I _BESS	7680 Å	5 × 200 s	1.280		24.46 ± 0.20
2015-07-04 (423.12 d)	IRAC 1	3.6 μm	2400 s	···	···	23.88 ± 0.30

Notes.

^(a)

The date of observations are listed with the number of days from the trigger in brackets. The time is calculated from the start of observations to the time of trigger.

^(b)

Measured from the full-width-at-half-maximum of non-saturated stellar sources on the stacked images.

^(c)

Magnitudes reported here have been corrected for the Galactic foreground reddening and will be used throughout our analysis.

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