Detection of the lensing galaxy for the double QSO HE 1104–1805☆

Rémy, M.; Claeskens, Jean-François; Surdej, Jean; Hjorth, J.; Refsdal, S.; Wucknitz, O.; Sørensen, Anton Norup; Grundahl, F.

doi:10.1016/s1384-1076(98)00005-0

Cited by 20 publications

(24 citation statements)

References 5 publications

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“…Q1017[207 \ J03.13 \ CT Q 286 Q1017[207 (Claeskens, Surdej, & Remy 1996) was conÐrmed by Surdej et al (1997) to be a pair of z s \ 2.545 quasars separated by Remy et al (1998) obtained 0A .85. WFPC2 V -and I-band images, in which they found no sign of a lens galaxy.…”

Section: Bqs 1009[0252mentioning

confidence: 99%

Hubble Space TelescopeObservations of 10 Two‐Image Gravitational Lenses

Lehár

Falco

Kochanek

et al. 2000

ApJ

212

372

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We report on a program to obtain Hubble Space T elescope (HST ) observations of galaxy-mass gravitational lens systems at optical and infrared wavelengths. Here we discuss the properties of 10 two- We Ðt a set of four standard lens models to each lens that had sufficient constraints to compare isothermal dark matter and constant mass-to-light lens models, and to explore the e †ects of local tidal shears.

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Section: Bqs 1009[0252mentioning

confidence: 99%

Hubble Space TelescopeObservations of 10 Two‐Image Gravitational Lenses

Lehár

Falco

Kochanek

et al. 2000

ApJ

212

372

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“…First considered as a good lens candidate by Wisotzki et al (1993) in the framework of the Hamburg/ESO Survey (HES) for bright quasars, the nature of this doubly lensed quasar was confirmed by Courbin et al (1998) and Remy et al (1998), who detected the lens, which is an early-type galaxy .…”

Section: -Fbqs J0951+2635 (D)mentioning

confidence: 91%

COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses

Sluse

Chantry

Magain

et al. 2012

A&A

121

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Gravitationally lensed quasars can be used as powerful cosmological and astrophysical probes. We can (i) infer the Hubble constant H 0 based on the so-called time-delay technique, (ii) unveil substructures along the line-of-sight toward distant galaxies, and (iii) compare the shape and the slope of baryons and dark matter distributions in the inner regions of galaxies. To reach these goals, we need highaccuracy astrometry of the quasar images relative to the lensing galaxy and morphology measurements of the lens. In this work, we first present new astrometry for 11 lenses with measured time delays, namely, JVAS B0218+357, SBS 0909+532, RX J0911.4+0551, FBQS J0951+2635, HE 1104-1805, PG 1115+080, JVAS B1422+231, SBS 1520+530, CLASS B1600+434, CLASS B1608+656, and HE 2149-2745. These measurements proceed from the use of the Magain-Courbin-Sohy (MCS) deconvolution algorithm applied in an iterative way (ISMCS) to near-IR HST images. We obtain a typical astrometric accuracy of about 1-2.5 mas and an accurate shape measurement of the lens galaxy. Second, we combined these measurements with those of 14 other lensing systems, mostly from the COSMOGRAIL set of targets, to present new mass models of these lenses. The modeling of these 25 gravitational lenses led to the following results: 1) in four double-image quasars (HE0047-1746, J1226-006, SBS 1520+530, and HE 2149-2745), we show that the influence of the lens environment on the time delay can easily be quantified and modeled, hence putting these lenses with high priority for time-delay determination; 2) for quadruple-image quasars, the difficulty often encountered in reproducing the image positions to milli-arcsec accuracy (astrometric anomaly problem) is overcome by explicitly including the nearest visible galaxy/satellite in the lens model. However, one anomalous system (RXS J1131-1231) does not show any luminous perturber in its vicinity, and three others (WFI 2026-4536, WFI 2033, and B2045+265) have problematic modeling. These four systems are the best candidates for a pertubation by a dark matter substructure along the line-of-sight; 3) we revisit the correlation between the position angle (PA) and ellipticity of the light and of the mass distribution in lensing galaxies. As in previous studies, we find a significant correlation between the PA of the light and of the mass distributions. However, in contrast with these same studies, we find that the ellipticity of the light and of the mass also correlate well, suggesting that the overall spatial distribution of matter is not very different from the baryon distribution in the inner ∼5 kpc of lensing galaxies. This offers a new test for high-resolution hydrodynamical simulations.

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“…In Figure 9, overlays of the CO(J = 3→2) emission on top of observed-frame 555 nm, 814 nm, and 1.6 μm continuum emission in HE 1104−1805 are shown (HST images from Remy et al 1998;Léhar et al 2000). The CO emission is clearly associated with the two (point-like) images of the AGN.…”

Section: Origin Of the Co Emissionmentioning

confidence: 99%

MOLECULAR GAS IN LENSEDz>2 QUASAR HOST GALAXIES AND THE STAR FORMATION LAW FOR GALAXIES WITH LUMINOUS ACTIVE GALACTIC NUCLEI

Riechers¹

2011

ApJ

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We report the detection of luminous CO(J = 2→1), CO(J = 3→2), and CO(J = 4→3) emission in the strongly lensed high-redshift quasars B1938+666 (z = 2.059), HE 0230−2130 (z = 2.166), HE 1104−1805 (z = 2.322), and B1359+154 (z = 3.240), using the Combined Array for Research in Millimeter-wave Astronomy. B1938+666 was identified in a "blind" CO redshift search, demonstrating the feasibility of such investigations with millimeter interferometers. These galaxies are lensing-amplified by factors of μ L 11-170, and thus allow us to probe the molecular gas in intrinsically fainter galaxies than currently possible without the aid of gravitational lensing. We report lensing-corrected intrinsic CO line luminosities of L CO = 0.65-21×10 9 K km s −1 pc 2 , translating to H 2 masses of M(H 2 ) = 0.52-17 × 10 9 (α CO /0.8) M . To investigate whether or not the active galactic nucleus (AGN) in luminous quasars substantially contributes to L FIR , we study the L CO -L FIR relation for quasars relative to galaxies without a luminous AGN as a function of redshift. We find no substantial differences between submillimeter galaxies and high-z quasars, but marginal evidence for an excess in L FIR in nearby low-L FIR AGN galaxies. This may suggest that an AGN contribution to L FIR is significant in systems with relatively low gas and dust content, but only minor in the most far-infrared-luminous galaxies (in which L FIR is dominated by star formation).

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Detection of the lensing galaxy for the double QSO HE 1104–1805☆

Cited by 20 publications

References 5 publications

Hubble Space TelescopeObservations of 10 Two‐Image Gravitational Lenses

Hubble Space TelescopeObservations of 10 Two‐Image Gravitational Lenses

COSMOGRAIL: the COSmological MOnitoring of GRAvItational Lenses

MOLECULAR GAS IN LENSEDz>2 QUASAR HOST GALAXIES AND THE STAR FORMATION LAW FOR GALAXIES WITH LUMINOUS ACTIVE GALACTIC NUCLEI

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