Spectroscopic confirmation of a dust-obscured, possibly metal-rich dwarf galaxy at z ∼ 5

Open Access

Table 1.

Derived physical properties of CEERS-14821.

Physical parameter	Estimated value
z_spec ^(a)	4.883 ± 0.003
12+log₁₀(O/H) (R3) ^(a,b)	$8 . 38_{- 0.04}^{+ 0.04}$ $8.38_{-0.04}^{+0.04}$
12+log₁₀(O/H) (R3) ^(a,b)	$7 . 30_{- 0.05}^{+ 0.06}$ $7.30_{-0.05}^{+0.06}$
R_e [kpc] ^(c)	$0 . 7_{- 0.1}^{+ 0.2}$ $0.7_{-0.1}^{+0.2}$

A_v, neb – C00 ^(a)	$2 . 2_{- 0.6}^{+ 0.5}$ $2.2_{-0.6}^{+0.5}$
log₁₀(M/M_⊙) ^(d)	$8 . 17_{- 0.04}^{+ 0.05}$ $8.17_{-0.04}^{+0.05}$
SFR [M_⊙/yr] (SED, < 100 Myr) ^(d)	$4_{- 2}^{+ 3}$ $4^{+3}_{-2}$
SFR [M_⊙/yr] (SED, < 10 Myr) ^(d)	$16_{- 2}^{+ 2}$ $16^{+2}_{-2}$
SFR [M_⊙/yr] (H_α, < 10 Myr) ^(a)	$41_{- 17}^{+ 17}$ $41_{-17}^{+17}$

A_v, neb – CF00 ^(a)	$3 . 4_{- 0.9}^{+ 0.7}$ $3.4_{-0.9}^{+0.7}$
log₁₀(M/M_⊙) ^(c)	$8 . 65_{- 0.05}^{+ 0.06}$ $8.65_{-0.05}^{+0.06}$
SFR [M_⊙/yr] (SED, < 100 Myr) ^(d)	$5_{- 2}^{+ 3}$ $5^{+3}_{-2}$
SFR [M_⊙/yr] (SED, < 10 Myr) ^(d)	$48_{- 6}^{+ 7}$ $48_{-6}^{+7}$
SFR [M_⊙/yr] (H_α, < 10 Myr) ^(a)	$114_{- 64}^{+ 88}$ $114_{-64}^{+88}$

Notes.

^(a)

Derived from the spectrum.

^(b)

The high metallicity value is slightly preferred considering the N2 and SED fitting results.

^(c)

Derived from the F356W image.

^(d)

Derived from the spectro-photometric fit. For some parameters, we report the estimates derived using the V-band dust extinction and assuming two different extinction laws C00; CF00.

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