The Hubble Constant Inferred from 18 Time-delay Lenses

Danuta Paraficz; Jens Hjorth

doi:10.1088/0004-637X/712/2/1378

The Hubble Constant Inferred from 18 Time-delay Lenses

Danuta Paraficz, Jens Hjorth

46 Citations (Scopus)

Abstract

We present a simultaneous analysis of 18 galaxy lenses with time-delay measurements. For each lens, we derive mass maps using pixelated simultaneous modeling with shared Hubble constant. We estimate the Hubble constant to be 66⁺⁶ _-4 km s^-1 Mpc^-1 (for a flat universe with Ω_m = 0.3, Ω_Λ = 0.7). We have also selected a subsample of five relatively isolated early-type galaxies, and by simultaneous modeling with an additional constraint on isothermality of their mass profiles, we get H ₀ = 76⁺³ _-3 km s^-1 Mpc^-1.

Original language	English
Journal	Astrophysical Journal
Volume	712
Issue number	2
Pages (from-to)	1378-1384
Number of pages	6
ISSN	0004-637X
DOIs	https://doi.org/10.1088/0004-637X/712/2/1378
Publication status	Published - 1 Apr 2010

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title = "The Hubble Constant Inferred from 18 Time-delay Lenses",

abstract = "We present a simultaneous analysis of 18 galaxy lenses with time-delay measurements. For each lens, we derive mass maps using pixelated simultaneous modeling with shared Hubble constant. We estimate the Hubble constant to be 66+6 -4 km s-1 Mpc-1 (for a flat universe with Ωm = 0.3, ΩΛ = 0.7). We have also selected a subsample of five relatively isolated early-type galaxies, and by simultaneous modeling with an additional constraint on isothermality of their mass profiles, we get H 0 = 76+3 -3 km s-1 Mpc-1.",

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AU - Hjorth, Jens

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N2 - We present a simultaneous analysis of 18 galaxy lenses with time-delay measurements. For each lens, we derive mass maps using pixelated simultaneous modeling with shared Hubble constant. We estimate the Hubble constant to be 66+6 -4 km s-1 Mpc-1 (for a flat universe with Ωm = 0.3, ΩΛ = 0.7). We have also selected a subsample of five relatively isolated early-type galaxies, and by simultaneous modeling with an additional constraint on isothermality of their mass profiles, we get H 0 = 76+3 -3 km s-1 Mpc-1.

AB - We present a simultaneous analysis of 18 galaxy lenses with time-delay measurements. For each lens, we derive mass maps using pixelated simultaneous modeling with shared Hubble constant. We estimate the Hubble constant to be 66+6 -4 km s-1 Mpc-1 (for a flat universe with Ωm = 0.3, ΩΛ = 0.7). We have also selected a subsample of five relatively isolated early-type galaxies, and by simultaneous modeling with an additional constraint on isothermality of their mass profiles, we get H 0 = 76+3 -3 km s-1 Mpc-1.

U2 - 10.1088/0004-637X/712/2/1378

DO - 10.1088/0004-637X/712/2/1378

M3 - Journal article

SN - 0004-637X

VL - 712

SP - 1378

EP - 1384

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -

The Hubble Constant Inferred from 18 Time-delay Lenses

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