A unique window into the epoch of reionisation: A double-peaked Lyman-α emitter in the proximity zone of a quasar at z ∼ 6.6

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Volume 700 (August 2025)

A&A, 700 (2025) A218

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Table 6.

Physical properties of LAE-11 calculated from line and continuum properties, and SED fitting.

Property	Value
β₁₅₅₀	$- 2 . 61_{- 0.08}^{+ 0.06}$ $-2.61^{+0.06}_{-0.08}$
M_UV, phot ^a	$- 19 . 84_{- 0.16}^{+ 0.14}$ $-19.84^{+0.14}_{-0.16}$
M_UV, cont ^b	$- 19 . 90_{- 0.14}^{+ 0.13}$ $-19.90^{+0.13}_{-0.14}$

E(B − V)_UV	$0 . 00_{- 0.00}^{+ 0.02}$ $0.00_{-0.00}^{+0.02}$
A_V	$0 . 08_{- 0.08}^{+ 0.14}$ $0.08_{-0.08}^{+0.14}$
A_V (`BAGPIPES`)	< 0.01

log M_⋆/M_⊙ ^c	$7 . 93_{- 0.08}^{+ 0.14}$ $7.93^{+0.14}_{-0.08}$
log U	$- 1 . 33_{- 0.27}^{+ 0.21}$ $-1.33^{+0.21}_{-0.27}$
log Z/Z_⊙	$- 0 . 86_{- 0.03}^{+ 0.03}$ $-0.86^{+0.03}_{-0.03}$
R_UV	< 0.47 kpc
R_Lyα	< 1.83 kpc

SFR_UV	5.55 ± 0.65 M_⊙ yr⁻¹
SFR_Hα	12.93 ± 1.20 M_⊙ yr⁻¹
log sSFR_UV/yr⁻¹	−7.04 ± 0.43
Σ_SFR(UV)	> 4.00 M_⊙ yr⁻¹ kpc⁻²
Σ_SFR(Hα)	> 9.44 M_⊙ yr⁻¹ kpc⁻²
log ξ_ion/Hz erg⁻¹(Hα, f_esc = 0.09)	25.52 ± 0.06
log ξ_ion/Hz erg⁻¹(Hα, f_esc = 0.43)	$25 . 66_{- 0.18}^{+ 0.35}$ $25.66^{+0.35}_{-0.18}$
log ξ_ion/Hz erg⁻¹(Hβ, f_esc = 0.09)	25.58 ± 0.07
log ξ_ion/Hz erg⁻¹(Hβ, f_esc = 0.43)	$25 . 72_{- 0.18}^{+ 0.35}$ $25.72^{+0.35}_{-0.18}$

Notes. ^a M_UV was calculated using the F115W flux. ^b M_UV was calculated using the fit to continuum flux. ^c Stellar mass M_⋆ was converted from Kroupa to Salpeter IMF according to Madau & Dickinson (2014).

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