A state-of-the-art analysis of the dwarf irregular galaxy NGC 6822

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Volume 572 (December 2014)

A&A, 572 (2014) A26

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Table 3

Details of the SFH solution for the six fields.

Field	Dist. [deg]^a	χ²^b	ΔF814W ^c	Δ(F475W − F814W) ^d	^e	^f	⟨ [Fe/H] ⟩ ^g

1	0.43	0.78	0.20	0.05	0.100 ± 0.007	0.90 ± 0.07	−0.9 ± 0.3
2	0.32	0.76	0.20	0.15	0.017 ± 0.002	0.98 ± 0.06	−0.8 ± 0.1
3	0.22	1.04	0.10	0.05	0.066 ± 0.004	0.93 ± 0.08	−0.9 ± 0.2
4	−0.06	2.35	0.08	0.15	0.011 ± 0.001	0.99 ± 0.08	−0.7 ± 0.1
5	−0.16	1.26	0.00	0.07	0.009 ± 0.001	0.99 ± 0.07	−1.0 ± 0.2
6	−0.26	1.23	0.05	0.02	0.018 ± 0.002	0.98 ± 0.09	−1.0 ± 0.1

Notes.

^(a)

Distance from the centre of each field, where the negative values identify the fields in the south-eastern region of the galaxy.

^(b)

χ² of the SFH solution.

^(c)

Offsets in F814W of the solution.

^(d)

Offsets in (F475W−F814W) of the solution.

^(e)

Integral of the SFR between 0.5 and13.5 Gyr ago.

^(f)

Integral of the SFR from 0.5 Gyr ago to date.

^(g)

Mean metallicity and spread in metallicity of the solution.

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