Chemical enrichment and physical conditions in I Zw 18

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Table 1

COS datasets.

#	α	δ	Grating/t^a
	(J2000)	(J2000)


11 523	09:34:02.00	+55:14:28.0	G130M/3.4, G160M/7.3,
			G185M/8.1
12 028	09:34:02.00	+55:14:28.0	G130M/8.2, G160M/11.4
11 579	09:34:01.97	+55:14:28.1	G130M/15.5

Notes. The exact coordinates for observations 11 523 and 12 028 are unknown because a peak-up was performed beforehand to target the UV brightest region. Coordinates are J2000.

^(a)

Exposure time in units of × 10³ s.

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