Kiloparsec Mass/Light Offsets in the Galaxy Pair-Ly$\alpha$ Emitter Lens System SDSS\,J1011$+$0143

Abstract

We report the discovery of significant mass/light offsets in the strong gravitational lensing system SDSS\,J1011$+$0143. We use the high-resolution \textsl{Hubble Space Telescope} (\textsl{HST}) F555W- and F814W-band imaging and Sloan Digital Sky Survey (SDSS) spectroscopy of this system, which consists of a close galaxy pair with a projected separation of $\approx 4.2$ kpc at $z_{\mathrm{lens}}\sim 0.331$ lensing a Ly$\alpha$ emitter (LAE) at $z_{\mathrm{source}}=2.701$. Comparisons between the mass peaks inferred from lens models and light peaks from \textsl{HST} imaging data reveal significant spatial mass/light offsets as large as $1.72\pm 0.24\pm 0.34$ kpc in both filter bands. Such large mass/light offsets, not seen in isolated field lens galaxies and relaxed galaxy groups, may be related to the interactions between the two lens galaxies. The detected mass/light offsets can potentially serve as an important test for the self-interacting dark matter model. However, other mechanisms such as dynamical friction on spatially differently distributed dark matter and stars could produce similar offsets. Detailed hydrodynamical simulations of galaxy-galaxy interactions with self-interacting dark matter could accurately quantify the effects of different mechanisms. The background LAE is found to contain three distinct star-forming knots with characteristic sizes from 116 pc to 438 pc. It highlights the power of strong gravitational lensing in probing the otherwise too faint and unresolved structures of distance objects below subkiloparsec or even 100 pc scales through its magnification effect.

arXiv comment9 pages, 4 figures, minor edits to match the ApJ published version

References in corpus (54)

• Observational Evidence from Supernovae for an Accelerating Universe and a Cosmological Constant
• Measurements of Omega and Lambda from 42 High-Redshift Supernovae
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• The clustering of galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations in the Data Release 10 and 11 galaxy samples
• Simulations of X-ray Clusters
• Direct constraints on the dark matter self-interaction cross-section from the merging galaxy cluster 1E0657-56
• Constraints on the Self-Interaction Cross-Section of Dark Matter from Numerical Simulations of the Merging Galaxy Cluster 1E 0657-5
• Weak lensing mass reconstruction of the interacting cluster 1E0657-558: Direct evidence for the existence of dark matter
• A Textbook Example of a Bow Shock in the Merging Galaxy Cluster 1E0657-56
• The Sloan Lens ACS Survey. X. Stellar, Dynamical, and Total Mass Correlations of Massive Early-type Galaxies
• The Sloan Lens ACS Survey. III - The Structure and Formation of Early-type Galaxies and their Evolution since z~1
• The Sloan Lens ACS Survey. I. A Large Spectroscopically Selected Sample of Massive Early-Type Lens Galaxies
• The non-gravitational interactions of dark matter in colliding galaxy clusters
• The Sloan Lens ACS Survey. IV: the mass density profile of early-type galaxies out to 100 effective radii
• The Sloan Lens ACS Survey. V. The Full ACS Strong-Lens Sample
• Massive Dark-matter halos and Evolution of Early-type Galaxies to z=1
• Gravitational detection of a low-mass dark satellite at cosmological distance
• VLA HI Observations of Gas Stripping in the Virgo Cluster Spiral NGC 4522
• Strong and weak lensing united III: Measuring the mass distribution of the merging galaxy cluster 1E0657-56
• The Optical Properties of Gravitational Lens Galaxies as a Probe of Galaxy Structure and Evolution
• Combined strong and weak lensing analysis of 28 clusters from the Sloan Giant Arcs Survey
• The Sloan Lens ACS Survey. VII. Elliptical Galaxy Scaling Laws from Direct Observational Mass Measurements
• Colliding clusters and dark matter self-interactions
• The behaviour of dark matter associated with 4 bright cluster galaxies in the 10kpc core of Abell 3827
• The BOSS Emission-Line Lens Survey (BELLS). I. A large spectroscopically selected sample of Lens Galaxies at redshift ~ 0.5
• The CFHTLS-Strong Lensing Legacy Survey (SL2S): Investigating the group-scale lenses with the SARCS sample
• What Is The BBN Prediction for the Baryon Density and How Reliable Is It?
• Self-Similar Models for the Mass Profiles of Early-type Lens Galaxies
• The BOSS Emission-Line Lens Survey. II. Investigating Mass-Density Profile Evolution in the SLACS+BELLS Strong Gravitational Lens Sample
• Detection of substructure with adaptive optics integral field spectroscopy of the gravitational lens B1422+231
• On the interpretation of dark matter self-interactions in Abell 3827
• The SL2S Galaxy-scale Lens Sample. III. Lens Models, Surface Photometry and Stellar Masses for the final sample
• Chandra observations of RXJ1347.5-1145: the distribution of mass in the most X-ray luminous galaxy cluster known
• Dissecting the Gravitational Lens B1608+656. I. Lens Potential Reconstruction
• The Sloan Lens ACS Survey. XII. Extending Strong Lensing to Lower Masses
• The CASSOWARY spectroscopy survey: A new sample of gravitationally lensed galaxies in SDSS
• Measurement of a Metallicity Gradient in a z=2 Galaxy: Implications for Inside-Out Assembly Histories
• Models of the Cosmic Horseshoe Gravitational Lens
• Super-resolving distant galaxies with gravitational telescopes: Keck-LGSAO and Hubble imaging of the lens system SDSSJ0737+3216
• Two New Large Separation Gravitational Lenses from SDSS
• The SWELLS survey. III. Disfavouring "heavy" initial mass functions for spiral lens galaxies
• The Sloan Lens ACS Survey. XI. Beyond Hubble resolution: size, luminosity and stellar mass of compact lensed galaxies at intermediate redshift
• Light/Mass Offsets in the Lensing Cluster Abell 3827: Evidence for Collisional Dark Matter?
• Mass-Galaxy offsets in Abell 3827, 2218 and 1689: intrinsic properties or line-of-sight substructures?
• Ram pressure stripping of the cool core of the Ophiuchus Cluster
• On the cross-section of Dark Matter using substructure infall into galaxy clusters
• The offsets between galaxies and their dark matter in Lambda-CDM
• The Sloan Bright Arcs Survey : Discovery of Seven New Strongly Lensed Galaxies from z=0.66-2.94
• SARCS strong-lensing galaxy groups: II - mass-concentration relation and strong-lensing bias
• CLASH: Extending galaxy strong lensing to small physical scales with distant sources highly-magnified by galaxy cluster members
• A New Einstein Cross: A Highly Magnified, Intrinsically Faint Lyman-Alpha Emitter at z=2.7
• Strong lensing in RX J1347.5-1145 revisited
• Measuring the total and baryonic mass profiles of the very massive CASSOWARY 31 strong lens. A fossil system at z ~ 0.7?
• Dark matter-rich early-type galaxies in the CASSOWARY 5 strong lensing system

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• What does the Bullet Cluster tell us about self-interacting dark matter?
• The Sloan Lens ACS Survey. XIII. Discovery of 40 New Galaxy-Scale Strong Lenses
• The BOSS Emission-Line Lens Survey. IV. : Smooth Lens Models for the BELLS GALLERY Sample
• Cosmic particle colliders: simulations of self-interacting dark matter with anisotropic scattering
• Identifying Strong Lenses with Unsupervised Machine Learning using Convolutional Autoencoder
• The BOSS Emission-Line Lens Survey. III. : Strong Lensing of Ly$\alpha$ Emitters by Individual Galaxies
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• HOLISMOKES. VIII. High-redshift, strong-lens search in the Hyper Suprime-Cam Subaru Strategic Program
• The Discovery of a Five-Image Lensed Quasar at z = 3.34 using PanSTARRS1 and Gaia
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• Beyond subhalos: Probing the collective effect of the Universe's small-scale structure with gravitational lensing
• Dark matter dynamics in Abell 3827: new data consistent with standard Cold Dark Matter
• GIGA-Lens: Fast Bayesian Inference for Strong Gravitational Lens Modeling
• Prediction of Supernova Rates in Known Galaxy-galaxy Strong-lens Systems
• Rest-frame UV Properties of Luminous Strong Gravitationally Lensed Ly$\alpha$ Emitters from the BELLS GALLERY Survey
• A test for skewed distributions of dark matter and a possible detection in galaxy cluster Abell 3827
• Discovery of a Very Bright and Intrinsically Very Luminous, Strongly Lensed Lyα Emitting Galaxy at z = 2.82 in the BOSS Emission-Line Lens Survey
• SDSS J1640+1932: a spectacular galaxy-quasar strong lens system
• Weak lensing analysis of galaxy pairs using CS82 data
• Magnification relations of quad lenses and applications on Einstein crosses
• Density streams in the disc winds of Classical T Tauri stars
• Confirming HSC strong lens candidates with DESI Spectroscopy. I. Project overview and first results
• Investigating the relation between environment and internal structure of massive elliptical galaxies using strong lensing