TDCOSMO - XXIII. Measurement of the Hubble constant from the doubly lensed quasar HE 1104−1805

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Volume 706 (February 2026)

A&A, 706 (2026) A270

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Table 4.

Summary of all the relevant HE 1104−1805 measurements.

Lens modelling measurements
	Power-law	Composite	Relative difference

θ_E	1.359 ± 0.007	1.369 ± 0.012	0.7 %
γ	1.85 ± 0.04	2.05 ± 0.10	10.8 %
γ_ext	0.14 ± 0.01	0.12 ± 0.02	14.2%

After combination with stellar kinematics

			Combination

D_Δt [Mpc]	$5131_{- 494}^{+ 509}$ $5131_{-494}^{+509}$	$4783_{- 295}^{+ 286}$ $4783_{-295}^{+286}$	$5083_{487}^{+ 504}$ $5083^{+504}_{487}$
D_d [Mpc]	$1854_{- 195}^{+ 193}$ $1854_{-195}^{+193}$	$2559_{- 269}^{+ 265}$ $2559_{-269}^{+265}$	$1921_{- 236}^{+ 254}$ $1921^{+254}_{-236}$

Ancillary measurements

Δt_AB	$176 . 3_{- 10.3}^{+ 11.4}$ $176.3^{+11.4}_{-10.3}$ days
κ_ext	$- 0 . 019_{- 0.020}^{+ 0.058}$ $-0.019_{-0.020}^{+0.058}$
σ^LOS₁	278 ± 7 (sys) ± 13 (stat) km s⁻¹
σ^LOS₂	259 ± 9 (sys) ± 8 (stat) km s⁻¹
σ^LOS₃	222 ± 8 (sys) ± 29 (stat) km s⁻¹

Notes. The relative difference was computed using the power-law model. The combination of both models is a kinematic-fitting likelihood-weighted approach.

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