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Table 1.

Collection of relevant properties of the rest-frame UV and Lyα emission of A2744-45924.

Property Value Notes
RA 00h 14m 20.34s a
Dec −30:20:37.06 a
z 4.464 b
Lyα 20 ± 5 c
N IV]λ 1483 0.8 ± 0.5 c
N IV]λ 1486 2.5 ± 0.6 c
O III]λ 1661 0.9 ± 0.5 c
O III]λ 1666 1.9 ± 0.9 c*
Hα 310 ± 16 c†
N IV]λ 1483/N IV]λ 1486 0.32 ± 0.21 d
EW0(Lyα) 97 ± 28 Å e
EW0(N IV]λ1483) 2.8 ± 1.7 Å e
EW0(N IV]λ1486) 9 ± 2 Å e
FWHMLyα 270 ± 15 km s−1 f
ΔvLyα, red 183 ± 5 km s−1 g
hhalo 5.7 ± 0.7 pkpc h
MUV, MUSE − 19 . 39 − 0.10 + 0.12 $ -19.39^{+0.12}_{-0.10} $ i

Notes.

a

Right ascension and declination (J2000).

b

Systemic redshift, measured from Hα in NIRCam grism data.

c

Emission line fluxes in units of 10−18 erg s−1 cm−2, corrected for magnification.

(d)

Flux ratio of the N IV]λλ1483,1486 doublet.

e

Rest-frame equivalent widths.

f

FWHM of the Lyα emission line.

g

Velocity offset of the Lyα red peak with respect to the Hα systemic redshift.

h

Exponential scale length of the Lyα halo.

i

UV magnitude at 1500 Å, measured from the MUSE 1D spectrum.

*

The flux of O III]λ1666 is affected by a skyline, and may be regarded as an upper limit.

†

From Labbe et al. (2024), added here for completeness.

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